/* ============================================================
   MENTORNOTE APP — Global Stylesheet (Improved)
   Syne (headings) · DM Sans (body)
   ============================================================ */

/* ----------------------------------------------------------
   1. TOKENS — Dark (default)
   ---------------------------------------------------------- */
:root {
    --bg-primary: #060608;
    --bg-secondary: #08080c;
    --bg-tertiary: #0d0d14;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.065);
    --bg-input: rgba(255, 255, 255, 0.04);
    --text-primary: #eaeaf0;
    --text-secondary: rgba(200, 200, 215, 0.6);
    --text-muted: rgba(200, 200, 215, 0.45);
    --text-faint: rgba(200, 200, 215, 0.25);
    --accent: #7c3aed;
    --accent-soft: #9f7aea;
    --accent-lighter: #c4b5fd;
    --border-card: rgba(255, 255, 255, 0.06);
    --border-card-hover: rgba(167, 139, 250, 0.3);
    --border-input: rgba(255, 255, 255, 0.08);
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-accent: rgba(138, 99, 255, 0.15);
    --border-pill: rgba(124, 58, 237, 0.22);
    --shadow-btn: 0 8px 32px rgba(124, 58, 237, 0.4), inset 0 0 0 1px rgba(255,255,255,0.08);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.4), inset 0 0 0 1px rgba(255,255,255,0.03);
    --shadow-card-active: 0 8px 32px rgba(124, 58, 237, 0.2), inset 0 0 0 1px rgba(167,139,250,0.12);
    --shadow-sm: 0 1px 4px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
    --shadow-purple: 0 0 24px rgba(124, 58, 237, 0.18);
    /* Aliases */
    --bg: var(--bg-primary);
    --bg-surface: var(--bg-secondary);
    --bg-raised: var(--bg-tertiary);
    --bg-hover: rgba(255, 255, 255, 0.05);
    --purple: var(--accent);
    --purple-light: var(--accent-soft);
    --purple-dim: rgba(124, 58, 237, 0.1);
    --purple-glow: rgba(124, 58, 237, 0.4);
    --white: #ffffff;
    --text: var(--text-primary);
    --border: var(--border-accent);
    /* Semantic */
    --red: #ff5a6e;
    --green: #3ecf8e;
    --orange: #f59e0b;
    --blue: #3b82f6;
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-pill: 999px;
    /* Typography */
    --font-heading: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    /* Transitions */
    --transition: 0.18s ease;
    --transition-md: 0.28s ease;
}

/* ----------------------------------------------------------
   1b. TOKENS — Light mode
   ---------------------------------------------------------- */
.light {
    --bg-primary: #f4f3ff;
    --bg-secondary: #eeeeff;
    --bg-tertiary: #e8e7fb;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.98);
    --bg-input: rgba(0, 0, 0, 0.035);
    --text-primary: #0a0a1c;
    --text-secondary: rgba(30, 20, 60, 0.58);
    --text-muted: rgba(30, 20, 60, 0.45);
    --text-faint: rgba(30, 20, 60, 0.28);
    --accent: #7c3aed;
    --accent-soft: #8b5cf6;
    --accent-lighter: #7c3aed;
    --border-card: rgba(124, 58, 237, 0.09);
    --border-card-hover: rgba(124, 58, 237, 0.28);
    --border-input: rgba(0, 0, 0, 0.09);
    --border-subtle: rgba(124, 58, 237, 0.06);
    --border-accent: rgba(124, 58, 237, 0.15);
    --border-pill: rgba(124, 58, 237, 0.18);
    --shadow-btn: 0 8px 32px rgba(124, 58, 237, 0.25), inset 0 0 0 1px rgba(255,255,255,0.18);
    --shadow-card: 0 2px 12px rgba(124, 58, 237, 0.07), 0 1px 3px rgba(0,0,0,0.04);
    --shadow-card-active: 0 6px 24px rgba(124, 58, 237, 0.16);
    --shadow-sm: 0 1px 4px rgba(124, 58, 237, 0.07);
    --shadow-md: 0 4px 16px rgba(124, 58, 237, 0.1);
    --shadow-purple: 0 0 20px rgba(124, 58, 237, 0.12);
    --bg: var(--bg-primary);
    --bg-surface: var(--bg-secondary);
    --bg-raised: var(--bg-tertiary);
    --bg-hover: rgba(124, 58, 237, 0.05);
    --purple: var(--accent);
    --purple-light: var(--accent-soft);
    --purple-dim: rgba(124, 58, 237, 0.07);
    --purple-glow: rgba(124, 58, 237, 0.25);
    --white: #0a0a1c;
    --text: var(--text-primary);
    --border: var(--border-accent);
}

/* ----------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    margin: 0;
    line-height: 1.2;
}

a {
    color: var(--accent-lighter);
    text-decoration: none;
    transition: color var(--transition);
}

    a:hover {
        color: var(--purple);
    }

/* ----------------------------------------------------------
   3. LANDING / HOME
   ---------------------------------------------------------- */
.index-body {
    background-color: var(--bg);
    min-height: 100vh;
}

.nav {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 82%;
    margin: 0 auto;
    padding: 1.5rem 0;
    color: var(--white);
}

.logo {
    width: 7rem;
    height: auto;
}

.home-container {
    padding: 5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 88rem;
    width: 90%;
    margin: 0 auto;
    color: var(--white);
    gap: 3rem;
}

    .home-container h1 {
        font-family: var(--font-heading);
        font-size: clamp(2rem, 4vw, 3.5rem);
        line-height: 1.12;
        max-width: 32rem;
        letter-spacing: -0.02em;
        background: linear-gradient(135deg, var(--white) 40%, var(--accent-lighter));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

.hometextcontainer {
    width: 40%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.75rem;
}

.videocontainer {
    border-radius: var(--radius-xl);
    overflow: hidden;
    width: 52%;
    max-width: 50rem;
    box-shadow: var(--shadow-purple), var(--shadow-card);
    border: 1px solid var(--border);
}

    .videocontainer video {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }

.getStarted,
.letsgetstarted {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #fff;
    background: var(--purple);
    padding: 0.875rem 1.875rem;
    border-radius: var(--radius-pill);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 0 20px var(--purple-glow);
    width: fit-content;
    letter-spacing: 0.01em;
}

    .getStarted:hover,
    .letsgetstarted:hover {
        background: var(--purple-light);
        transform: translateY(-2px);
        box-shadow: 0 0 32px var(--purple-glow);
        color: #fff;
    }

    .letsgetstarted a {
        text-decoration: none;
        color: #fff;
    }

/* ----------------------------------------------------------
   4. AUTH
   ---------------------------------------------------------- */
.auth-container {
    background: var(--bg-surface);
    padding: 2.75rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-purple), var(--shadow-card);
    text-align: center;
    width: 26rem;
    max-width: 95vw;
    color: var(--white);
    margin: 5rem auto 0;
}

    .auth-container h1 {
        font-family: var(--font-heading);
        font-size: 2rem;
        margin-bottom: 0.4rem;
        letter-spacing: -0.01em;
    }

    .auth-container .tagline {
        font-size: 0.875rem;
        margin-bottom: 2rem;
        color: var(--text-muted);
    }

.auth-form input {
    width: 90%;
    padding: 0.75rem 1rem;
    margin: 0 auto 1rem;
    display: block;
    border: 1px solid var(--border-input);
    border-radius: var(--radius-md);
    background: var(--bg-raised);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

    .auth-form input::placeholder {
        color: var(--text-faint);
    }

    .auth-form input:focus {
        border-color: var(--purple);
        box-shadow: 0 0 0 3px var(--purple-dim);
    }

.auth-form button {
    width: 100%;
    background: var(--purple);
    color: #fff;
    padding: 0.875rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: background var(--transition-md), box-shadow var(--transition-md), transform var(--transition);
    letter-spacing: 0.01em;
}

    .auth-form button:hover {
        background: var(--purple-light);
        box-shadow: 0 0 20px var(--purple-glow);
        transform: translateY(-1px);
    }

.auth-form .switch {
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

    .auth-form .switch a {
        color: var(--accent-lighter);
        font-weight: 600;
    }

.social-buttons {
    height: fit-content;
}

    .social-buttons button {
        background: var(--bg-raised);
        border: 1px solid var(--border-input);
        color: var(--white);
        margin-top: 0.5rem;
        margin-bottom: 0.625rem;
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        padding: 0.7rem;
        border-radius: var(--radius-md);
        cursor: pointer;
        transition: background var(--transition), border-color var(--transition), transform var(--transition);
        font-family: var(--font-body);
        font-size: 0.875rem;
    }

        .social-buttons button:hover {
            background: var(--bg-hover);
            border-color: var(--purple);
            transform: translateY(-1px);
        }

    .social-buttons img {
        max-height: 2rem;
        height: 1.5rem;
    }

    .social-buttons span {
        margin-left: 0.875rem;
    }

/* ----------------------------------------------------------
   5. APP SHELL — Sidebar + Content
   ---------------------------------------------------------- */
.func-nav-body {
    display: flex;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.created-date {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.module-info {
    width: 7rem;
}

.func-navigation {
    min-width: 16rem;
    width: 16rem;
    background: var(--bg-surface);
    border-right: 1px solid var(--border-subtle);
    padding: 1.5rem 1.125rem;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border-subtle) transparent;
}

.f-home-controller {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    background-color: var(--bg);
}

/* Brand */
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1.75rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-subtle);
    text-decoration: none;
}

    .brand .logo {
        width: 34px;
        height: 34px;
        background: white;
        padding: 7px;
        border-radius: 50%;
        flex-shrink: 0;
    }

.brand-text h1 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin: 0;
    letter-spacing: -0.01em;
}

.brand-text p {
    margin: 0;
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-top: 1px;
}

/* Nav sections */
.nav-section-title {
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
}

.nav-section,
.stats-section {
    font-size: 0.75rem;
}

.stats-section {
    margin-top: 2.5rem;
}

.nav-links, .quick-stats {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .nav-links a {
        text-decoration: none;
        color: var(--text);
        font-size: 0.8rem;
    }

.nav-item {
    height: auto;
    min-height: 2.75rem;
}

.nav-item,
.quick-stats li {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 0.55rem 0.625rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    margin-bottom: 2px;
    transition: background var(--transition), color var(--transition);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

    .nav-item a {
        text-decoration: none;
        color: inherit;
    }

    .nav-item:hover,
    .quick-stats li:hover {
        background: var(--bg-raised);
        color: var(--text-primary);
    }

    .nav-item.active {
        background: var(--purple-dim);
        border: 1px solid var(--border-accent);
        color: var(--accent-lighter);
    }

        .nav-item.active a {
            color: var(--accent-lighter);
        }

    .quick-stats li strong {
        margin-left: auto;
        font-weight: 600;
    }

/* Nav icons */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.bg-blue {
    background: #3b82f6;
}

.bg-green {
    background: #10b981;
}

.bg-purple {
    background: var(--purple);
}

.bg-orange {
    background: #f59e0b;
}

.bg-red {
    background: #ef4444;
}

.bg-light-blue {
    background: rgba(59,130,246,0.15);
}

.bg-light-purple {
    background: var(--purple-dim);
}

/* ----------------------------------------------------------
   6. HEADER (top bar)
   ---------------------------------------------------------- */
.header {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    width: 100%;
    height: 54px;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

    .header a {
        margin-left: 1.5rem;
        color: var(--text-muted);
        font-size: 0.82rem;
        transition: color var(--transition);
    }

        .header a:hover {
            color: var(--accent-lighter);
        }

    .header h1 {
        font-size: 1.05rem;
        font-family: var(--font-heading);
        color: var(--white);
        letter-spacing: -0.01em;
    }

    .header div {
        width: 70%;
        display: flex;
        align-items: center;
    }

#menu-btn {
    display: none;
    margin-left: auto;
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    font-size: 1.25rem;
    color: var(--white);
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.55rem;
    transition: background var(--transition);
    line-height: 1;
}

    #menu-btn:hover {
        background: var(--purple-dim);
    }

/* ----------------------------------------------------------
   7. DASHBOARD — Stat Cards
   ---------------------------------------------------------- */
.startpagecont {
    display: flex;
    flex-direction: column;
    padding-top: 2rem;
    align-items: center;
    min-height: fit-content;
    width: 100%;
    margin-top: 1.5rem;
}

.fun-cards {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 90%;
    max-width: 80rem;
    margin: 0 auto 2rem;
    gap: 1rem;
}

.fun-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1.25rem 1.375rem;
    width: calc(40% - 0.75rem);
    min-width: 11rem;
    height: 6.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

    .fun-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-purple);
    }

    .fun-card:nth-child(1) {
        background: linear-gradient(135deg, #2d1253, #7e22ce);
    }

    .fun-card:nth-child(2) {
        background: linear-gradient(135deg, #3b1a5c, #a855f7);
    }

    .fun-card:nth-child(3) {
        background: linear-gradient(135deg, #0e3a2c, #10b981);
    }

    .fun-card:nth-child(4) {
        background: linear-gradient(135deg, #3d2000, #f59e0b);
    }

    .fun-card h2 {
        font-family: var(--font-heading);
        font-size: 1.6rem;
        color: #fff;
        margin: 0;
        letter-spacing: -0.02em;
    }

    .fun-card .card-title {
        font-size: 0.68rem;
        color: rgba(255,255,255,0.65);
        font-weight: 600;
        margin: 0 0 0.2rem;
        text-transform: uppercase;
        letter-spacing: 0.06em;
    }

    .fun-card .card-word {
        font-size: 0.75rem;
        color: rgba(255,255,255,0.88);
        font-weight: 700;
    }

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.25rem;
    height: 3.25rem;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.12);
    flex-shrink: 0;
}

    .card-icon img {
        width: 1.875rem;
    }

.cardbg-blue {
    background: rgba(59,130,246,0.22);
}

.cardbg-green {
    background: rgba(16,185,129,0.22);
}

.cardbg-purple {
    background: rgba(138,99,255,0.22);
}

.cardbg-orange {
    background: rgba(245,158,11,0.22);
}

.cardbg-red {
    background: rgba(239,68,68,0.22);
}

/* ----------------------------------------------------------
   8. DASHBOARD — Content area
   ---------------------------------------------------------- */
.start-con-holder {
    margin: 0 auto;
    width: 88%;
    max-width: 80rem;
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    height: fit-content;
}

    .start-con-holder h2 {
        font-family: var(--font-heading);
        width: fit-content;
        margin: 0 auto 1rem;
        padding-bottom: 0.625rem;
        border-bottom: 1px solid var(--border);
        color: var(--white);
        letter-spacing: -0.01em;
    }

.notes-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    width: 80%;
    height: fit-content;
    max-height: 30rem;
    margin: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border-subtle) transparent;
}

.start-form {
    width: 35%;
}

.quick-actions {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1.25rem;
    min-width: 14rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

    .quick-actions > p:first-of-type {
        font-family: var(--font-heading);
        color: var(--white);
        font-weight: 700;
        margin-top: 0;
        font-size: 0.95rem;
    }

.actions a {
    display: flex;
    align-items: center;
    margin: 0.625rem 0;
    padding: 0.55rem 0.75rem;
    font-size: 0.75rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text);
    transition: background var(--transition), transform var(--transition), color var(--transition);
}

    .actions a img {
        margin-right: 0.75rem;
    }

    .actions a:nth-child(1) {
        background-color: rgba(16,185,129,0.12);
    }

    .actions a:nth-child(2) {
        background-color: rgba(239,68,68,0.1);
    }

    .actions a:nth-child(3) {
        background-color: rgba(245,158,11,0.1);
    }

    .actions a:nth-child(4) {
        background-color: rgba(59,130,246,0.1);
    }

    .actions a:hover {
        background-color: var(--bg-hover);
        transform: translateX(4px);
        color: var(--white);
    }

.actions div section {
    margin-left: 0.75rem;
}

    .actions div section p:first-child {
        color: var(--white);
        font-weight: 700;
        margin: 0;
    }

    .actions div section p:nth-child(2) {
        color: var(--text-muted);
        font-weight: 500;
        margin: 0.1rem 0 0;
    }

/* Start form list */
.startform ul {
    list-style: none;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.375rem;
    margin: 0;
}

.startform li {
    margin: 0.375rem;
    padding: 0.75rem 1rem;
    display: flex;
    height: 2.5rem;
    min-width: 18rem;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    background: var(--bg-raised);
    border-radius: var(--radius-md);
    color: var(--text);
    border: 1px solid var(--border-subtle);
    transition: border-color var(--transition), background var(--transition);
}

    .startform li:hover {
        border-color: var(--border-card);
        background: var(--bg-card-hover);
    }

.startform input {
    margin: 0.3rem auto;
    max-width: 12rem;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    color: var(--white);
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.6rem;
    font-family: var(--font-body);
    transition: border-color var(--transition);
}

    .startform input:focus {
        outline: none;
        border-color: var(--purple);
    }

.cont-head {
    font-family: var(--font-heading);
    color: var(--white);
    font-weight: 700;
    width: fit-content;
    margin: 0 auto;
    letter-spacing: -0.01em;
}

/* ----------------------------------------------------------
   9. NOTE CARDS
   ---------------------------------------------------------- */
.notes-cards-container {
    width: 95%;
    height: fit-content;
    margin: auto;
    padding: 0.875rem;
}

.note-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    margin: 0.375rem 0;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

    .note-card:hover {
        border-color: var(--border-accent);
        background: var(--bg-card-hover);
        box-shadow: var(--shadow-card-active);
/*        transform: translateY(-1px);*/
    }

.note-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.icon-circle {
    width: 2.125rem;
    height: 2.125rem;
    background: var(--purple-dim);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.note-text strong {
    font-size: 0.8rem;
    color: var(--white);
    font-weight: 500;
}

.timestamp {
    display: block;
    margin: 2px 0 0;
    font-size: 0.68rem;
    color: var(--text-muted);
}

.note-right {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.tag {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-pill);
    text-transform: lowercase;
    letter-spacing: 0.01em;
    transition: background var(--transition-md), color var(--transition-md);
}

.note-tag {
    background-color: var(--purple-dim);
    color: var(--accent-lighter);
    border: 1px solid var(--border-accent);
}

    .note-tag:hover {
        background-color: var(--purple);
        color: #fff;
    }

.kebab {
    font-size: 1.2rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-muted);
    transition: color var(--transition);
}

    .kebab:hover {
        color: var(--white);
    }

.kebab-img {
    height: 1.375rem;
    opacity: 0.5;
    cursor: pointer;
    transition: opacity var(--transition);
}

    .kebab-img:hover {
        opacity: 0.9;
    }

.empty-list {
    width: fit-content;
    margin: 2.5rem auto;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Popup menu */
.popup-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--bg-raised);
    border: 1px solid var(--border-card);
    padding: 4px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 2px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    z-index: 1000;
    min-width: 130px;
}

    .popup-menu.hidden {
        display: none;
    }

.popup-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    text-align: left;
    cursor: pointer;
    padding: 0.5rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-family: var(--font-body);
    display: flex;
    align-items: center;
    gap: 7px;
    transition: background var(--transition), color var(--transition);
}

    .popup-btn:hover {
        background: var(--bg-hover);
        color: var(--white);
    }

    .popup-btn:nth-child(2) {
        color: var(--red);
    }

        .popup-btn:nth-child(2):hover {
            background: rgba(255,90,110,0.1);
            color: var(--red);
        }

.note-title-input {
    background: var(--bg-raised);
    color: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    width: 50%;
    font-family: var(--font-body);
    transition: border-color var(--transition);
}

    .note-title-input:focus {
        outline: none;
        border-color: var(--purple);
    }

/* ----------------------------------------------------------
   10. MODAL
   ---------------------------------------------------------- */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

    .modal[style*="block"] {
        display: flex !important;
        align-items: center;
        justify-content: center;
    }

.modal-content {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-purple), 0 24px 48px rgba(0,0,0,0.6);
    color: var(--white);
    padding: 2.25rem;
    width: 22rem;
    max-width: 92vw;
    position: relative;
    animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
    from {
        transform: scale(0.95) translateY(8px);
        opacity: 0;
    }

    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.modal-content h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    width: fit-content;
    margin: 0 auto 1.5rem;
    letter-spacing: -0.01em;
}

.modal-form input[type=text] {
    display: block;
    width: 90%;
    margin: 0 auto 1rem;
    padding: 0.75rem;
    border: none;
    border-bottom: 1px solid var(--border-input);
    background: none;
    color: var(--white);
    font-family: var(--font-body);
    outline: none;
    transition: border-color var(--transition);
    font-size: 0.9rem;
}

    .modal-form input[type=text]::placeholder {
        color: var(--text-faint);
    }

    .modal-form input[type=text]:focus {
        border-bottom: 2px solid var(--purple);
    }

.modal-buttons {
    width: fit-content;
    margin: auto;
    display: flex;
    gap: 0.625rem;
}

.cancel-btn {
    background: var(--bg-raised);
    border: 1px solid var(--border-input);
    color: var(--text-secondary);
    padding: 0.7rem 1.25rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.875rem;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}

    .cancel-btn:hover {
        background: var(--bg-hover);
        color: var(--white);
        transform: translateY(-1px);
    }

.confirm-btn {
    background: var(--red);
    border: none;
    padding: 0.7rem 1.25rem;
    border-radius: var(--radius-md);
    color: #fff;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    transition: opacity var(--transition), transform var(--transition);
}

    .confirm-btn:hover {
        opacity: 0.85;
        transform: translateY(-1px);
    }

.modal-button {
    transition: transform var(--transition-md);
}

    .modal-button:hover {
        transform: scale(1.04);
    }

/* ----------------------------------------------------------
   11. FLASHCARDS
   ---------------------------------------------------------- */
.fg {
    width: 90%;
    height: fit-content;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.func-holder {
    width: 100%;
}

.flashcard-container {
    width: 70%;
    height: 28rem;
    margin: 2rem auto;
    position: relative;
    perspective: 1000px;
}

.flashcard {
    position: absolute;
    inset: 0;
    transform-style: preserve-3d;
    transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
    display: none;
}

    .flashcard.active {
        display: block;
    }

    .flashcard.flipped {
        transform: rotateY(180deg);
    }

.front, .back {
    position: absolute;
    inset: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-lg);
    backface-visibility: hidden;
    color: var(--text);
    transition: box-shadow var(--transition-md);
}

    .front:hover, .back:hover {
        box-shadow: var(--shadow-card-active);
    }

.back {
    transform: rotateY(180deg);
}

    .front p, .back p {
        max-width: 70%;
        text-align: center;
        line-height: 1.6;
    }

.controls {
    margin: 2rem auto;
    width: fit-content;
    display: flex;
    gap: 0.5rem;
}

    .controls button {
        background: var(--purple);
        color: #fff;
        border: none;
        border-radius: var(--radius-md);
        padding: 0.75rem 1.5rem;
        font-family: var(--font-body);
        font-size: 0.9rem;
        font-weight: 600;
        cursor: pointer;
        transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        box-shadow: 0 0 16px var(--purple-glow);
        letter-spacing: 0.01em;
    }

        .controls button:hover {
            background: var(--purple-light);
            transform: translateY(-2px);
            box-shadow: 0 0 24px var(--purple-glow);
        }

        .controls button:active {
            transform: translateY(0);
        }

/* ----------------------------------------------------------
   12. PREVIEW / STUDY TOOLS
   ---------------------------------------------------------- */
.main-content {
    display: flex;
    flex-direction: column;
    width: 72%;
    margin: 2rem auto;
    gap: 1rem;
}

.study-tools {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1.375rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

    .study-tools h2 {
        font-family: var(--font-heading);
        font-size: 1rem;
        color: var(--white);
        margin-bottom: 0.2rem;
        letter-spacing: -0.01em;
    }

    .study-tools .subtitle {
        color: var(--text-muted);
        font-size: 0.75rem;
        margin-bottom: 1rem;
    }

.tool-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    padding: 1rem 1.25rem;
    margin-bottom: 0.625rem;
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
    text-decoration: none;
    color: var(--text);
}

    .tool-card > div {
        display: flex;
        align-items: center;
    }

    .tool-card h3 {
        font-size: 0.875rem;
        font-weight: 600;
        color: var(--white);
        margin: 0;
    }

    .tool-card p {
        font-size: 0.68rem;
        color: var(--text-muted);
        margin: 0.15rem 0 0;
    }

    .tool-card:hover {
        transform: translateY(-2px);
        border-color: var(--border-accent);
        box-shadow: var(--shadow-card-active);
    }

    .tool-card img {
        width: 1rem;
        height: 1rem;
        padding: 0.5rem;
        border-radius: 50%;
        margin-right: 0.75rem;
        flex-shrink: 0;
    }

.flashcard-tool {
    background: rgba(138,99,255,0.07);
}

    .flashcard-tool > div img {
        background: var(--purple);
    }

.ai-tutor {
    background: rgba(245,158,11,0.05);
}

    .ai-tutor > div img {
        background: var(--orange);
    }

.exam {
    background: rgba(239,68,68,0.05);
}

    .exam > div img {
        background: var(--red);
    }

.summarized {
    background: rgba(59,130,246,0.05);
}

    .summarized > div > img {
        background: var(--blue);
    }

.arrow {
    font-size: 1.125rem;
    color: var(--text-faint);
    transition: color var(--transition), transform var(--transition);
}

.tool-card:hover .arrow {
    color: var(--accent-lighter);
    transform: translateX(3px);
}

/* Progress panel */
.right-panel {
    padding: 1rem;
}

.progress-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

    .progress-box h3 {
        font-family: var(--font-heading);
        font-size: 1rem;
        color: var(--white);
        letter-spacing: -0.01em;
    }

    .progress-box p {
        font-size: 0.68rem;
        color: var(--text-muted);
        display: flex;
        justify-content: space-between;
    }

.progress-stats {
    display: flex;
    justify-content: space-between;
}

    .progress-stats div {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        margin: 0.5rem;
        font-size: 0.7rem;
        color: var(--text-muted);
    }

    .progress-stats .count {
        font-size: 1.1rem;
        color: var(--white);
        font-weight: 700;
        font-family: var(--font-heading);
    }

    .progress-stats .purple {
        color: var(--accent-lighter);
        font-weight: 700;
    }

    .progress-stats .orange {
        color: var(--orange);
        font-weight: 700;
    }

/* Summary */
.summary-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    width: 92%;
    padding: 1.25rem;
    margin: auto;
    border-radius: var(--radius-lg);
    font-family: var(--font-body);
}

    .summary-box p {
        font-size: 0.8rem;
        color: var(--text-muted);
    }

.summary-summary-box {
    font-size: 0.8rem;
    overflow-x: hidden;
    color: var(--text);
    line-height: 1.65;
    width: 80%;
    margin: 0 auto;
}

.summary-main-content {
    width: 100%;
    font-family: var(--font-body);
}

.view-original {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-decoration: none;
    display: block;
    margin-right: auto;
    transition: color var(--transition), transform var(--transition);
}

    .view-original:hover {
        color: var(--accent-lighter);
        transform: scale(1.03);
    }

/* ----------------------------------------------------------
   13. AI TUTOR / CHAT
   ---------------------------------------------------------- */
.page-title {
    font-family: var(--font-heading);
    font-size: 1.875rem;
    color: var(--white);
    margin-bottom: 0.25rem;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -0.02em;
}

.page-subtext {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.tutor-container {
    height: fit-content;
}

.chat-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    height: 70vh;
    min-height: 300px;
    overflow-y: auto;
    width: 90%;
    margin: 0 auto 1rem;
    font-family: var(--font-body);
    scrollbar-width: thin;
    scrollbar-color: var(--border-subtle) transparent;
}

.message-row {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.125rem;
}

.bot-icon {
    background: linear-gradient(135deg, var(--purple), #7e22ce);
    color: #fff;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    margin-right: 10px;
    box-shadow: 0 0 12px var(--purple-glow);
}

.message-bubble {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    max-width: 600px;
    font-size: 0.875rem;
    color: var(--text);
    line-height: 1.65;
}

.user-bubble {
    background: var(--purple-dim);
    border-color: var(--border-accent);
    color: var(--white);
    margin-left: auto;
}

.chat-input-area {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    display: flex;
    border-radius: var(--radius-lg);
    padding: 5px;
    width: 90%;
    margin: 0 auto;
    max-width: 44rem;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}

    .chat-input-area:focus-within {
        border-color: var(--purple);
        box-shadow: 0 0 0 3px var(--purple-dim);
    }

.chat-input {
    flex: 1;
    padding: 0.7rem 1rem;
    border: none;
    background: transparent;
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    outline: none;
}

    .chat-input::placeholder {
        color: var(--text-faint);
    }

.send-btn {
    background: var(--purple);
    border: none;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    margin-left: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-md), box-shadow var(--transition-md), transform var(--transition);
}

    .send-btn:hover {
        background: var(--purple-light);
        box-shadow: 0 0 16px var(--purple-glow);
        transform: scale(1.05);
    }

    .send-btn:active {
        transform: scale(0.98);
    }

/* Typing indicator */
#typing-indicator {
    display: flex;
    gap: 5px;
    margin: 8px;
    background: var(--bg-raised);
    border: 1px solid var(--border-subtle);
    padding: 0.7rem 1rem;
    width: fit-content;
    border-radius: var(--radius-md);
}

.dot {
    width: 6px;
    height: 6px;
    background: var(--accent-lighter);
    border-radius: 50%;
    animation: blink 1.4s infinite both;
}

    .dot:nth-child(2) {
        animation-delay: 0.2s;
    }

    .dot:nth-child(3) {
        animation-delay: 0.4s;
    }

@keyframes blink {
    0%, 100% {
        opacity: 0.2;
        transform: translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateY(-3px);
    }
}

.hide-message {
    visibility: hidden;
}

.no-messages {
    width: fit-content;
    margin: auto;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Chat capture */
.capture-summary, .capture-chat {
    height: fit-content;
    padding: 2rem;
    padding-top: 5rem;
    font-size: 1rem;
    font-family: var(--font-body);
    width: 62%;
    margin: 0 auto;
    color: var(--text);
}

.chat-window {
    flex: 1;
    overflow-y: auto;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1rem;
    max-height: 75vh;
    background: var(--bg-surface);
    scrollbar-width: thin;
    scrollbar-color: var(--border-subtle) transparent;
}

.chat-message {
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    max-width: 80%;
    word-wrap: break-word;
    font-size: 0.875rem;
    color: var(--text);
}

.user-msg {
    background: var(--purple-dim);
    border: 1px solid var(--border-accent);
    margin-left: auto;
}

.ai-msg {
    background: var(--bg-raised);
    border: 1px solid var(--border-subtle);
}

.chat-input-container {
    display: flex;
    gap: 0.5rem;
}

#userMessage {
    flex: 1;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    background: var(--bg-raised);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.875rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

    #userMessage:focus {
        border-color: var(--purple);
        box-shadow: 0 0 0 3px var(--purple-dim);
    }

/* ----------------------------------------------------------
   14. PRACTICE EXAM
   ---------------------------------------------------------- */
.test-container {
    width: 60%;
    margin: 2rem auto;
}

.exam-progress {
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.exam-question {
    width: 100%;
    margin: 1.5rem auto;
    padding: 1.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-purple);
    display: none;
    background: var(--bg-card);
    color: var(--text);
}

    .exam-question.active {
        display: block;
    }

    .exam-question p {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 1.25rem;
        color: var(--white);
        line-height: 1.45;
    }

.result {
    width: 100%;
    margin: 1.5rem auto;
    padding: 1.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-purple);
    background: var(--bg-card);
    max-height: 45rem;
    overflow-y: auto;
    color: var(--text);
}

    .result p {
        font-size: 1.05rem;
        font-weight: 700;
        margin: auto;
        width: fit-content;
    }

    .result .passedspan {
        color: var(--green);
        font-size: 2rem;
    }

    .result .failedspan {
        color: var(--red);
        font-size: 2rem;
    }

.exam-options {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
    background: var(--bg-raised);
    color: var(--text);
}

    .option input[type="radio"] {
        display: none;
    }

    .option span {
        flex: 1;
        font-size: 0.875rem;
    }

    .option:hover {
        background: var(--purple-dim);
        border-color: var(--purple);
        transform: translateX(4px);
        color: var(--white);
    }

    .option input[type="radio"]:checked + span {
        color: var(--accent-lighter);
        font-weight: 600;
    }

.exam-navigation {
    margin-top: 2rem;
    display: flex;
    justify-content: space-between;
}

.submit-btn, .submit-test-btn {
    padding: 0.7rem 1.75rem;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
    font-family: var(--font-body);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.submit-btn {
    background: var(--purple);
    color: #fff;
}

    .submit-btn:hover {
        background: var(--purple-light);
        box-shadow: 0 0 20px var(--purple-glow);
        transform: translateY(-1px);
    }

.submit-test-btn {
    background: var(--red);
    color: #fff;
    font-size: 0.875rem;
}

    .submit-test-btn:hover {
        opacity: 0.85;
        transform: translateY(-1px);
    }

/* Review */
.review-question {
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--text);
}

    .review-question .question-text {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--white);
    }

.correct-option {
    background: rgba(62,207,142,0.1);
    border-left: 3px solid var(--green);
    border-radius: 0;
}

.wrong-option {
    background: rgba(255,90,110,0.1);
    border-left: 3px solid var(--red);
    border-radius: 0;
}

.false-option {
    background: rgba(255,90,110,0.06);
}

.result .exam-navigation input {
    background: var(--purple);
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    color: #fff;
    font-family: var(--font-body);
    cursor: pointer;
    font-weight: 600;
    transition: background var(--transition), transform var(--transition);
}

    .result .exam-navigation input:hover {
        background: var(--purple-light);
        transform: translateY(-1px);
    }

/* ----------------------------------------------------------
   15. UPLOAD
   ---------------------------------------------------------- */
.upload-container {
    width: 72%;
    display: flex;
    justify-content: space-around;
    gap: 1.5rem;
}

    .upload-container form {
        border-radius: var(--radius-lg);
        background: var(--bg-card);
        border: 1px solid var(--border);
        padding: 2rem;
        text-align: center;
        width: 100%;
        max-width: 22rem;
    }

    .upload-container h2, .upload-container h1 {
        font-family: var(--font-heading);
        font-size: 1rem;
        margin-bottom: 1rem;
        color: var(--white);
        letter-spacing: -0.01em;
    }

.tab-buttons {
    display: flex;
    margin: 1rem 0;
    background: var(--bg-raised);
    align-items: center;
    justify-content: space-around;
    padding: 4px;
    border-radius: var(--radius-md);
    gap: 2px;
    border: 1px solid var(--border-subtle);
}

.tab-button {
    padding: 0.4rem 0.75rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    background: none;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.78rem;
    transition: background var(--transition), color var(--transition);
}

    .tab-button:hover {
        color: var(--white);
    }

.tab-buttons .active {
    background: var(--purple-dim);
    border: 1px solid var(--border-accent);
    color: var(--accent-lighter);
}

.tab-content {
    margin-top: 1.5rem;
    border: 1px dashed var(--border-card);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    height: 11rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: border-color var(--transition), background var(--transition);
    cursor: pointer;
}

    .tab-content:hover {
        border-color: var(--purple);
        background: var(--purple-dim);
    }

    .tab-content span {
        font-size: 0.65rem;
        border: 1px solid var(--border-accent);
        padding: 0.35rem 0.75rem;
        border-radius: var(--radius-pill);
        color: var(--text-muted);
        transition: color var(--transition);
    }

    .tab-content:hover span {
        color: var(--accent-lighter);
    }

    .tab-content p {
        color: var(--text-muted);
        font-size: 0.75rem;
        margin: 0;
    }

.upload-button {
    display: block;
    margin-top: 1.375rem;
    width: 100%;
    background: var(--purple);
    border: none;
    color: #fff;
    padding: 0.875rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
    box-shadow: 0 0 16px var(--purple-glow);
    letter-spacing: 0.01em;
}

    .upload-button:hover {
        background: var(--purple-light);
        box-shadow: 0 0 24px var(--purple-glow);
        transform: translateY(-1px);
    }

.upload-form {
    display: block;
}

.upload-icon {
    width: 3.25rem;
    height: 3.25rem;
    opacity: 0.6;
}

.upload-logo {
    max-height: 2rem;
    height: 1.5rem;
}

.title-input {
    width: 90%;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-input);
    background: var(--bg-raised);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.875rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

    .title-input:focus {
        outline: none;
        border-color: var(--purple);
        box-shadow: 0 0 0 3px var(--purple-dim);
    }

.video-url-group {
    display: flex;
    gap: 8px;
    margin-bottom: 1rem;
    width: 100%;
}

    .video-url-group input {
        flex: 1;
        padding: 0.5rem 0.75rem;
        background: var(--bg-raised);
        border: 1px solid var(--border-input);
        color: var(--white);
        border-radius: var(--radius-md);
        font-family: var(--font-body);
        transition: border-color var(--transition);
        outline: none;
    }

        .video-url-group input:focus {
            border-color: var(--purple);
        }

    .video-url-group button {
        background: var(--purple);
        border: none;
        color: #fff;
        padding: 0 1rem;
        border-radius: var(--radius-md);
        cursor: pointer;
        font-family: var(--font-body);
        font-weight: 600;
        transition: background var(--transition), transform var(--transition);
    }

        .video-url-group button:hover {
            background: var(--purple-light);
            transform: scale(1.04);
        }

.selected-files-container {
    margin-top: 1.5rem;
}

.file-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-raised);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.9rem;
    margin-bottom: 0.625rem;
    transition: border-color var(--transition);
}

    .file-box:hover {
        border-color: var(--border-card);
    }

    .file-box p {
        font-size: 0.65rem;
        margin: 0.15rem;
        color: var(--text-muted);
    }

.file-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

    .file-info div {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

.filename {
    font-weight: 600;
    color: var(--white);
    font-size: 0.8rem;
}

.filesize {
    font-size: 0.68rem;
    color: var(--text-muted);
}

.remove-file {
    font-size: 1.125rem;
    cursor: pointer;
    color: var(--text-faint);
    padding: 0 8px;
    transition: color var(--transition);
}

    .remove-file:hover {
        color: var(--red);
    }

.processing-box {
    margin-top: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 350px;
    height: fit-content;
}

#progressBarWrapper {
    width: 100%;
    height: 6px;
    background: var(--bg-raised);
    border-radius: var(--radius-pill);
    margin-top: 12px;
    overflow: hidden;
}

#progressBar {
    width: 0%;
    height: 100%;
    background: linear-gradient(to right, var(--purple), var(--accent-lighter));
    border-radius: var(--radius-pill);
    transition: width 0.5s ease;
}

.success-message {
    border: 1px solid rgba(62,207,142,0.4);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    padding: 0.4rem 0.75rem;
    color: var(--green);
    background: rgba(62,207,142,0.07);
}

.error-message {
    border: 1px solid rgba(255,90,110,0.4);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    padding: 0.4rem 0.75rem;
    color: var(--red);
    background: rgba(255,90,110,0.07);
}

/* ----------------------------------------------------------
   16. SPEECH / RECORD
   ---------------------------------------------------------- */
.sc-page {
    width: 90%;
    max-width: 780px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 4rem;
    font-family: var(--font-body);
    color: var(--text-primary);
}

.sc-header {
    margin-bottom: 2.5rem;
}

    .sc-header h1 {
        font-family: var(--font-heading);
        font-size: 1.75rem;
        font-weight: 700;
        color: var(--text-primary);
        margin: 0 0 0.25rem;
        letter-spacing: -0.02em;
    }

    .sc-header p {
        font-size: 0.875rem;
        color: var(--text-secondary);
        margin: 0;
    }

.recorder-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 2.25rem 2rem;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.pulse-ring {
    position: relative;
    width: 88px;
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-play-audio {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 0.5px solid var(--color-border-secondary);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    flex-shrink: 0;
}

    .btn-play-audio:hover {
        background: var(--color-background-secondary);
        color: var(--color-text-primary);
    }

    .pulse-ring::before,
    .pulse-ring::after {
        content: '';
        position: absolute;
        border-radius: 50%;
        border: 1.5px solid var(--accent);
        opacity: 0;
        transition: opacity 0.3s;
    }

    .pulse-ring::before {
        width: 108px;
        height: 108px;
    }

    .pulse-ring::after {
        width: 128px;
        height: 128px;
    }

    .pulse-ring.is-recording::before,
    .pulse-ring.is-recording::after {
        opacity: 1;
        animation: pulse-out 1.4s ease-out infinite;
    }

    .pulse-ring.is-recording::after {
        animation-delay: 0.7s;
    }

@keyframes pulse-out {
    0% {
        transform: scale(0.85);
        opacity: 0.5;
    }

    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

.mic-btn {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.15s, background 0.2s;
    background: var(--purple-dim);
    position: relative;
    z-index: 1;
}

    .mic-btn:hover {
        transform: scale(1.06);
    }

    .mic-btn:active {
        transform: scale(0.97);
    }

    .mic-btn svg {
        width: 30px;
        height: 30px;
        color: var(--accent-lighter);
    }

    .mic-btn.is-recording {
        background: rgba(255,90,110,0.1);
    }

        .mic-btn.is-recording svg {
            color: var(--red);
        }

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background: var(--bg-raised);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    padding: 5px 14px;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-faint);
    transition: background 0.3s;
}

    .status-dot.active {
        background: var(--red);
    }

    .status-dot.ready {
        background: var(--green);
    }

.rec-timer {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    display: none;
}

    .rec-timer.visible {
        display: block;
    }

.sc-audio {
    width: 100%;
}

    .sc-audio audio {
        width: 100%;
        height: 36px;
        border-radius: var(--radius-sm);
        background: var(--bg-raised);
        display: none;
    }

        .sc-audio audio.visible {
            display: block;
        }

.upload-form-row {
    width: 100%;
    display: flex;
    gap: 10px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
}

    .upload-form-row.visible {
        opacity: 1;
        pointer-events: all;
    }

    .upload-form-row input[type="text"] {
        flex: 1;
        background: var(--bg-raised);
        border: 1px solid var(--border-input);
        border-radius: var(--radius-md);
        padding: 0.625rem 0.875rem;
        font-size: 0.875rem;
        color: var(--text-primary);
        font-family: var(--font-body);
        outline: none;
        transition: border-color var(--transition), box-shadow var(--transition);
    }

        .upload-form-row input[type="text"]::placeholder {
            color: var(--text-faint);
        }

        .upload-form-row input[type="text"]:focus {
            border-color: var(--purple);
            box-shadow: 0 0 0 3px var(--purple-dim);
        }

.btn-upload {
    background: var(--purple);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 0 1.25rem;
    font-size: 0.875rem;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity var(--transition), transform var(--transition);
    letter-spacing: 0.01em;
}

    .btn-upload:hover {
        opacity: 0.88;
        transform: translateY(-1px);
    }

    .btn-upload:disabled {
        opacity: 0.35;
        cursor: not-allowed;
        transform: none;
    }

.sc-section-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin: 0 0 0.75rem;
}

.notes-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.note-row {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.875rem 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
    cursor: pointer;
}

    .note-row:hover {
        border-color: var(--border-accent);
        background: var(--bg-card-hover);
        transform: translateY(-1px);
    }

.note-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: var(--purple-dim);
    border: 1px solid var(--border-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

    .note-icon svg {
        width: 15px;
        height: 15px;
        color: var(--accent-lighter);
    }

.note-title {
    flex: 1;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.note-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.btn-explore {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent-lighter);
    background: var(--purple-dim);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    padding: 4px 10px;
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
    letter-spacing: 0.01em;
}

    .btn-explore:hover {
        background: var(--purple);
        color: #fff;
    }

.btn-kebab {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-faint);
    position: relative;
    transition: background var(--transition), color var(--transition);
}

    .btn-kebab:hover {
        background: var(--bg-raised);
        color: var(--text-secondary);
    }

    .btn-kebab svg {
        width: 15px;
        height: 15px;
    }

.dropdown-wrap {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: var(--bg-raised);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 4px;
    z-index: 100;
    min-width: 140px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    animation: dropIn 0.15s ease-out;
}

@keyframes dropIn {
    from {
        transform: translateY(-6px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.dropdown-menu.open {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    width: 100%;
    text-align: left;
    font-family: var(--font-body);
    transition: background var(--transition), color var(--transition);
}

    .dropdown-item:hover {
        background: var(--bg-hover);
        color: var(--text-primary);
    }

    .dropdown-item.danger:hover {
        background: rgba(255,90,110,0.1);
        color: var(--red);
    }

    .dropdown-item svg {
        width: 13px;
        height: 13px;
        flex-shrink: 0;
    }

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-faint);
}

    .empty-state svg {
        width: 36px;
        height: 36px;
        margin-bottom: 0.75rem;
        opacity: 0.35;
    }

    .empty-state p {
        font-size: 0.875rem;
        margin: 0;
    }

.modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(6,6,8,0.78);
    z-index: 200;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
}

    .modal-backdrop.open {
        display: flex;
    }

.modal-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    padding: 1.875rem;
    width: 100%;
    max-width: 380px;
    margin: 1rem;
    animation: modalIn 0.2s ease-out;
}

    .modal-box h3 {
        font-family: var(--font-heading);
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-primary);
        margin: 0 0 1rem;
        letter-spacing: -0.01em;
    }

    .modal-box input[type="text"] {
        width: 100%;
        background: var(--bg-raised);
        border: 1px solid var(--border-input);
        border-radius: var(--radius-md);
        padding: 0.625rem 0.875rem;
        font-size: 0.875rem;
        color: var(--text-primary);
        font-family: var(--font-body);
        outline: none;
        margin-bottom: 1rem;
        box-sizing: border-box;
        transition: border-color var(--transition), box-shadow var(--transition);
    }

        .modal-box input[type="text"]:focus {
            border-color: var(--purple);
            box-shadow: 0 0 0 3px var(--purple-dim);
        }

    .modal-box input::placeholder {
        color: var(--text-faint);
    }

.modal-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0 0 1.25rem;
    line-height: 1.55;
}

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.btn-modal-cancel {
    background: var(--bg-raised);
    border: 1px solid var(--border-input);
    border-radius: var(--radius-sm);
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-family: var(--font-body);
    cursor: pointer;
    transition: color var(--transition), background var(--transition);
}

    .btn-modal-cancel:hover {
        color: var(--text-primary);
        background: var(--bg-hover);
    }

.btn-modal-confirm {
    background: var(--purple);
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    font-family: var(--font-body);
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition);
}

    .btn-modal-confirm:hover {
        opacity: 0.88;
        transform: translateY(-1px);
    }

    .btn-modal-confirm.danger {
        background: var(--red);
    }

/* ----------------------------------------------------------
   17. LOADING & SPINNERS
   ---------------------------------------------------------- */
#overlay {
    position: fixed;
    inset: 0;
    background: rgba(6,6,8,0.88);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--white);
    font-family: var(--font-body);
    backdrop-filter: blur(6px);
}

.overlay-content {
    text-align: center;
}

.loading-bar {
    width: 280px;
    height: 5px;
    background: var(--bg-raised);
    border-radius: var(--radius-pill);
    overflow: hidden;
    margin-top: 1.5rem;
}

.loading-bar-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--purple) 0%, var(--accent-lighter) 50%, var(--purple) 100%);
    background-size: 200% auto;
    animation: progressIndeterminate 1.6s linear infinite;
}

@keyframes progressIndeterminate {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(6,6,8,0.94);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    backdrop-filter: blur(10px);
    animation: fadeIn 0.35s ease-in-out;
}

.loading-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 3rem 4rem;
    box-shadow: var(--shadow-purple), 0 32px 64px rgba(0,0,0,0.6);
    text-align: center;
    animation: popIn 0.35s ease-out;
}

.spinner-ring {
    width: 68px;
    height: 68px;
    border: 4px solid var(--bg-raised);
    border-top-color: var(--purple);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
    margin: 0 auto 1.5rem;
    box-shadow: 0 0 20px var(--purple-glow);
    position: relative;
}

    .spinner-ring::after {
        content: "";
        position: absolute;
        width: 84px;
        height: 84px;
        border-radius: 50%;
        border: 1.5px solid var(--purple-dim);
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        animation: pulseGlow 1.5s ease-in-out infinite;
    }

.loading-title {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.loading-subtext {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.spinner {
    width: 100%;
    height: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner-circle {
    width: 28px;
    height: 28px;
    border: 3px solid var(--bg-raised);
    border-top-color: var(--purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes popIn {
    0% {
        transform: scale(0.92);
        opacity: 0;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes pulseGlow {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }

    100% {
        transform: translate(-50%, -50%) scale(1.35);
        opacity: 0;
    }
}

/* ----------------------------------------------------------
   18. UTILITIES
   ---------------------------------------------------------- */
.hidden {
    display: none !important;
}

.hide-message {
    visibility: hidden;
}

.record-title,
.startform input[type="file"]::-webkit-file-upload-button {
    border: none;
    background: var(--purple-dim);
    color: var(--accent-lighter);
    padding: 0.3rem 0.625rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-body);
    transition: background var(--transition);
}

    .startform input[type="file"]::-webkit-file-upload-button:hover {
        background: var(--purple);
        color: #fff;
    }

/* ----------------------------------------------------------
   19. RESPONSIVE — Tablet (≤ 1124px)
   ---------------------------------------------------------- */
@media (max-width: 1124px) {
    .func-navigation {
        width: 30%;
    }

    .brand-text h1 {
        font-size: 0.875rem;
    }

    .card-icon img {
        width: 1.875rem;
    }

    .brand .logo {
        width: 20px;
        height: 20px;
    }

    .fun-cards {
        flex-direction: column;
        width: 78%;
    }

    .fun-card {
        width: 95%;
        margin: 0 auto;
        height: 5.5rem;
    }

    .start-con-holder {
        flex-direction: column;
    }

    .start-form, .notes-form {
        width: 100%;
        margin-bottom: 2rem;
    }

    .main-content {
        flex-direction: column-reverse;
        width: 100%;
    }

    .study-tools {
        width: 92%;
    }

    .summary-box {
        display: none;
    }

    .flashcard-container {
        width: 100%;
    }

    .test-container {
        width: 92%;
    }

    .upload-container {
        flex-direction: column-reverse;
    }

    .processing-box {
        margin-bottom: 2rem;
    }
}

/* ----------------------------------------------------------
   20. RESPONSIVE — Mobile (≤ 768px)
   ---------------------------------------------------------- */
@media (max-width: 768px) {
    .header {
        padding: 0 1rem;
    }

        .header a {
            margin-left: 0.875rem;
        }

        .header h1 {
            font-size: 0.95rem;
        }

        .header div {
            width: 88%;
        }

    #menu-btn {
        margin-left: auto;
        display: block;
        background: transparent;
        border: 1px solid var(--border);
        font-size: 1.25rem;
        color: var(--white);
        border-radius: var(--radius-sm);
        padding: 0.28rem 0.5rem;
        cursor: pointer;
        line-height: 1;
        transition: background var(--transition);
    }

        #menu-btn:hover {
            background: var(--purple-dim);
        }

    .func-navigation {
        position: fixed;
        left: -110%;
        z-index: 2000;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        min-height: 100vh;
        width: 80%;
        max-width: 20rem;
        box-shadow: 8px 0 32px rgba(0,0,0,0.5);
    }

        .func-navigation.active {
            left: 0;
        }

    .f-home-controller {
        flex-direction: column;
    }

    .fg {
        margin-top: 5rem;
    }

    .test-container {
        margin: auto;
    }

    .exam-question {
        font-size: 0.875rem;
        max-width: 100%;
    }

        .exam-question p {
            font-size: 0.9rem;
        }

    .submit-btn, .submit-test-btn {
        padding: 0.65rem 1rem;
    }

    .upload-container form {
        width: 100%;
    }

    .home-container {
        flex-direction: column;
        padding: 2.5rem 1.25rem;
        gap: 2rem;
    }

    .hometextcontainer, .videocontainer {
        width: 100%;
    }

    .sc-page {
        padding: 1.5rem 1rem 3rem;
    }

    .recorder-card {
        padding: 1.75rem 1.25rem;
    }

    .test-container {
        width: 96%;
    }

    .capture-summary, .capture-chat {
        width: 92%;
        padding-top: 3rem;
    }

    .chat-container {
        width: 96%;
        height: 60vh;
    }

    .chat-input-area {
        width: 96%;
    }
}