/* ============================================
   TSOPP — Apple-inspired Design System
   Purple Accent + Adaptive Dark Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ===== LIGHT THEME (default) ===== */
:root {
    --bg: #fbfbfd;
    --bg-secondary: #f5f5f7;
    --text: #1d1d1f;
    --text-secondary: #6e6e73;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --accent-glow: rgba(139, 92, 246, 0.15);
    --accent-subtle: rgba(139, 92, 246, 0.08);
    --success: #30d158;
    --success-bg: rgba(48, 209, 88, 0.12);
    --success-text: #248a3d;
    --warning: #ff9f0a;
    --warning-bg: rgba(255, 159, 10, 0.12);
    --warning-text: #c77c02;
    --danger: #ff3b30;
    --danger-bg: rgba(255, 59, 48, 0.12);
    --danger-text: #d70015;
    --border: #d2d2d7;
    --card-bg: #ffffff;
    --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 8px 40px rgba(139, 92, 246, 0.12);
    --card-radius: 20px;
    --nav-bg: rgba(251, 251, 253, 0.72);
    --nav-border: rgba(0, 0, 0, 0.08);
    --modal-bg: rgba(0, 0, 0, 0.4);
    --code-bg: #f0f0f3;
    --font: 'JetBrains Mono', monospace;
    --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    color-scheme: light dark;
}

/* ===== DARK THEME — system preference (when no manual override) ===== */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0d0d11;
        --bg-secondary: #141418;
        --text: #e8e8ed;
        --text-secondary: #8e8e93;
        --accent: #a78bfa;
        --accent-hover: #c4b5fd;
        --accent-glow: rgba(167, 139, 250, 0.2);
        --accent-subtle: rgba(167, 139, 250, 0.1);
        --success-bg: rgba(48, 209, 88, 0.15);
        --success-text: #32d74b;
        --warning-bg: rgba(255, 159, 10, 0.15);
        --warning-text: #ffd60a;
        --danger-bg: rgba(255, 69, 58, 0.15);
        --danger-text: #ff453a;
        --border: #2c2c30;
        --card-bg: #1c1c20;
        --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        --card-shadow-hover: 0 8px 40px rgba(167, 139, 250, 0.15);
        --nav-bg: rgba(13, 13, 17, 0.72);
        --nav-border: rgba(255, 255, 255, 0.06);
        --modal-bg: rgba(0, 0, 0, 0.6);
        --code-bg: #2a2a30;
    }
}

/* ===== DARK THEME — manual override ===== */
:root[data-theme="dark"] {
    --bg: #0d0d11;
    --bg-secondary: #141418;
    --text: #e8e8ed;
    --text-secondary: #8e8e93;
    --accent: #a78bfa;
    --accent-hover: #c4b5fd;
    --accent-glow: rgba(167, 139, 250, 0.2);
    --accent-subtle: rgba(167, 139, 250, 0.1);
    --success-bg: rgba(48, 209, 88, 0.15);
    --success-text: #32d74b;
    --warning-bg: rgba(255, 159, 10, 0.15);
    --warning-text: #ffd60a;
    --danger-bg: rgba(255, 69, 58, 0.15);
    --danger-text: #ff453a;
    --border: #2c2c30;
    --card-bg: #1c1c20;
    --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 8px 40px rgba(167, 139, 250, 0.15);
    --nav-bg: rgba(13, 13, 17, 0.72);
    --nav-border: rgba(255, 255, 255, 0.06);
    --modal-bg: rgba(0, 0, 0, 0.6);
    --code-bg: #2a2a30;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ===== SCROLL-REVEAL ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes heroGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* Elements that will be animated on scroll */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children animations */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0s; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 0.4s; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 0.5s; }

/* Page load animation */
.navbar {
    animation: fadeIn 0.6s ease-out;
}

.hero {
    animation: fadeInUp 0.8s ease-out;
}

.page-title {
    animation: slideInLeft 0.6s ease-out;
}

/* ===== NAVBAR ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--nav-border);
    padding: 0 max(1.5rem, env(safe-area-inset-left));
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
    transition: background var(--transition-fast),
                border-color var(--transition-fast);
}

.navbar .logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity var(--transition-fast);
}

.navbar .logo:hover {
    opacity: 0.7;
}

.navbar .logo img {
    height: 28px;
    width: auto;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .navbar .logo img {
        filter: brightness(0.9) contrast(1.1);
    }
}
[data-theme="dark"] .navbar .logo img {
    filter: brightness(0.9) contrast(1.1);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    padding: 0.35rem 0.5rem;
    font-size: 1rem;
    line-height: 1;
    color: var(--text-secondary);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                transform var(--transition-fast),
                border-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--accent-subtle);
    color: var(--accent);
    border-color: var(--accent);
}

.theme-toggle:active {
    transform: scale(0.92);
}

.navbar nav {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.navbar nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition-fast),
                background var(--transition-fast),
                transform var(--transition-fast);
    position: relative;
}

.navbar nav a:hover {
    color: var(--text);
    background: var(--accent-subtle);
}

.navbar nav a:active {
    transform: scale(0.97);
}

.navbar nav a.active {
    color: var(--accent);
    font-weight: 600;
}

.btn-logout {
    background: transparent;
    color: var(--danger);
    border: none;
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font);
    font-weight: 500;
    transition: background var(--transition-fast),
                transform var(--transition-fast);
}

.btn-logout:hover {
    background: var(--danger-bg);
}

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

/* ===== HERO / BANNER ===== */
.hero {
    text-align: center;
    padding: 4rem 1.5rem 3rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-secondary) 100%);
}

/* Purple gradient glow behind hero */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: heroGlow 4s ease-in-out infinite;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 0.75rem;
    position: relative;
}

.hero p {
    font-size: clamp(0.95rem, 2.5vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    line-height: 1.7;
}

.hero .ksu-info {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    position: relative;
}

.hero .ksu-info a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

.hero .ksu-info a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    animation: fadeIn 0.5s ease-out 0.2s both;
}

/* ===== CARDS ===== */
.card {
    background: var(--card-bg);
    border-radius: var(--card-radius);
    border: 1px solid var(--border);
    box-shadow: var(--card-shadow);
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: transform var(--transition-smooth),
                box-shadow var(--transition-smooth),
                border-color var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), #c084fc, var(--accent));
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--accent-glow);
}

.card:hover::before {
    opacity: 1;
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.card .meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.card .description {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.card .actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.7rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: transform var(--transition-fast);
}

.badge:hover {
    transform: scale(1.05);
}

.badge-open { background: var(--success-bg); color: var(--success-text); }
.badge-closed { background: rgba(142, 142, 147, 0.12); color: #636366; }
.badge-pending { background: var(--warning-bg); color: var(--warning-text); }
.badge-approved { background: var(--success-bg); color: var(--success-text); }
.badge-rejected { background: var(--danger-bg); color: var(--danger-text); }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .badge-closed { background: rgba(142, 142, 147, 0.15); color: #98989d; }
}
[data-theme="dark"] .badge-closed { background: rgba(142, 142, 147, 0.15); color: #98989d; }

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: 980px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--font);
    text-decoration: none;
    text-align: center;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

/* Button ripple shine */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
    opacity: 0;
}

.btn:active::after {
    width: 300px;
    height: 300px;
    opacity: 1;
    transition: width 0s, height 0s, opacity 0s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
    color: #fff;
    box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-hover) 0%, #9333ea 100%);
    box-shadow: 0 6px 24px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, #22c55e 0%, var(--success) 100%);
    color: #fff;
    box-shadow: 0 2px 12px rgba(48, 209, 88, 0.2);
}

.btn-success:hover {
    box-shadow: 0 6px 24px rgba(48, 209, 88, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, var(--danger) 100%);
    color: #fff;
    box-shadow: 0 2px 12px rgba(255, 59, 48, 0.2);
}

.btn-danger:hover {
    box-shadow: 0 6px 24px rgba(255, 59, 48, 0.3);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-sm {
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 16px var(--accent-glow);
}

/* Table action buttons — grid layout, uniform size */
table td:last-child {
    white-space: nowrap;
}
table td:last-child .btn,
table td:last-child a.btn {
    display: inline-flex;
    width: 105px;
    padding: 0.4rem 0;
    font-size: 0.78rem;
    border: none;
    box-shadow: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-align: center;
    justify-content: center;
    margin: 2px;
    vertical-align: middle;
}
table td:last-child .btn:hover,
table td:last-child a.btn:hover {
    background: var(--accent-subtle);
    color: var(--accent);
    box-shadow: none;
    transform: translateY(-1px);
}
table td:last-child .btn-primary {
    background: var(--accent-subtle);
    color: var(--accent);
}
table td:last-child .btn-success {
    background: var(--success-bg);
    color: var(--success-text);
}
table td:last-child .btn-success:hover {
    background: rgba(48, 209, 88, 0.2);
    color: var(--success-text);
}
table td:last-child .btn-danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}
table td:last-child .btn-danger:hover {
    background: rgba(255, 59, 48, 0.2);
    color: var(--danger-text);
}
table td:last-child .btn-outline {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: none;
}
table td:last-child .btn-outline:hover {
    background: var(--accent-subtle);
    color: var(--accent);
    box-shadow: none;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    font-family: var(--font);
    background: var(--card-bg);
    color: var(--text);
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast),
                background var(--transition-fast);
    -webkit-appearance: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
    accent-color: var(--accent);
    -webkit-appearance: checkbox;
    appearance: checkbox;
    padding: 0;
}

/* ===== AUTH FORMS ===== */
.auth-container {
    max-width: 440px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
    animation: fadeInUp 0.7s ease-out;
}

.auth-container h1 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.auth-container .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.auth-container .card {
    padding: 2rem;
}

.auth-container .card:hover {
    transform: none;
}

.auth-container .link-row {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.9rem;
}

.auth-container .link-row a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

.auth-container .link-row a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* ===== TABLES ===== */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 16px;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border);
    animation: scaleIn 0.5s ease-out;
}

table th, table td {
    padding: 0.85rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition-fast);
}

table th {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

table tr:last-child td {
    border-bottom: none;
}

table tr:hover td {
    background: var(--accent-subtle);
}

/* ===== PAGE TITLE ===== */
.page-title {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
}

/* ===== ALERTS ===== */
.alert {
    padding: 0.85rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid transparent;
    animation: fadeInUp 0.4s ease-out;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: rgba(48, 209, 88, 0.2);
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger-text);
    border-color: rgba(255, 59, 48, 0.2);
}

.alert-info {
    background: var(--accent-subtle);
    color: var(--accent);
    border-color: rgba(139, 92, 246, 0.2);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    animation: fadeIn 0.6s ease-out;
}

.empty-state h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2.5rem 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 4rem;
    transition: background var(--transition-fast),
                border-color var(--transition-fast);
}

.footer a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.footer a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

.footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

/* ===== ADMIN NAV ===== */
.admin-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.6rem 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    animation: fadeIn 0.5s ease-out 0.1s both;
    transition: background var(--transition-fast),
                border-color var(--transition-fast);
}

.admin-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.45rem 1rem;
    border-radius: 980px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background var(--transition-fast),
                color var(--transition-fast),
                transform var(--transition-fast);
}

.admin-nav a:hover {
    background: var(--accent-subtle);
    color: var(--text);
}

.admin-nav a:active {
    transform: scale(0.97);
}

.admin-nav a.active {
    background: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
    color: #fff;
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* ===== EDIT FORM ===== */
.edit-form {
    margin-top: 1rem;
}

/* ===== FILE UPLOAD ===== */
.file-upload-area {
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition-fast),
                background var(--transition-fast),
                transform var(--transition-fast);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-upload-area:hover {
    border-color: var(--accent);
    background: var(--accent-subtle);
    transform: scale(1.01);
}

.file-upload-area.dragover {
    border-color: var(--accent);
    background: var(--accent-glow);
    transform: scale(1.02);
}

/* ===== RICH TEXT EDITOR (legacy) ===== */
.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 12px 12px 0 0;
}

.editor-toolbar button {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text);
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font);
    transition: all var(--transition-fast);
}

.editor-toolbar button:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-1px);
}

.toolbar-separator {
    width: 1px;
    background: var(--border);
    margin: 0 0.25rem;
}

.editor-content {
    border: 1px solid var(--border);
    border-radius: 0 0 12px 12px;
    padding: 1rem;
    min-height: 300px;
    background: var(--card-bg);
    color: var(--text);
    outline: none;
    line-height: 1.8;
    font-size: 1rem;
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
}

.editor-content:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.editor-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 1rem 0;
    display: block;
}

.editor-content.drag-over {
    border-color: var(--accent);
    background: var(--accent-subtle);
}

/* ===== MARKDOWN EDITOR ===== */
.md-editor {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.md-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0.5rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}

.md-toolbar button {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.md-toolbar button:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-1px);
}

.md-toolbar-sep {
    width: 1px;
    background: var(--border);
    margin: 0 0.25rem;
}

.md-body {
    position: relative;
}

.md-textarea {
    width: 100%;
    min-height: 350px;
    padding: 1rem;
    border: none;
    outline: none;
    font-family: 'SF Mono', 'Menlo', 'Monaco', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
    box-sizing: border-box;
    background: var(--card-bg);
    color: var(--text);
}

.md-textarea.drag-over {
    background: var(--accent-subtle);
}

.md-preview {
    padding: 1rem;
    min-height: 350px;
    line-height: 1.8;
    color: var(--text);
}

/* Rich content display on public pages */
.rich-content img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 1rem 0;
    display: block;
    transition: transform var(--transition-smooth);
}

.rich-content img:hover {
    transform: scale(1.01);
}

.rich-content h2 { font-size: 1.5rem; margin: 1.5rem 0 0.5rem; }
.rich-content h3 { font-size: 1.25rem; margin: 1.25rem 0 0.5rem; }
.rich-content ul, .rich-content ol { margin: 0.5rem 0; padding-left: 1.5rem; }
.rich-content p { margin: 0.5rem 0; }

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--modal-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.25s ease-out;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid var(--border);
    padding: 2rem;
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    transition: background var(--transition-fast),
                transform var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-secondary);
    transform: rotate(90deg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

/* ===== DETAILS / SUMMARY (Archive) ===== */
details {
    transition: all var(--transition-fast);
}

details summary {
    cursor: pointer;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

details summary::-webkit-details-marker {
    display: none;
}

details summary::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(-45deg);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

details[open] summary::before {
    transform: rotate(45deg);
}

details summary:hover {
    color: var(--accent);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ===== SELECTION ===== */
::selection {
    background: var(--accent-glow);
    color: var(--text);
}

/* ===== HIDDEN ===== */
.hidden { display: none !important; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .navbar {
        padding: 0 1rem;
        height: 48px;
    }

    .navbar .logo { font-size: 1rem; }
    .navbar .logo img { height: 22px; }

    .navbar nav { gap: 0; }

    .navbar nav a {
        padding: 0.35rem 0.5rem;
        font-size: 0.8rem;
    }

    .hero {
        padding: 3rem 1rem 2rem;
    }

    .hero::before {
        width: 300px;
        height: 300px;
    }

    .hero h1 { font-size: 1.75rem; }

    .container { padding: 1.25rem 1rem; }

    .card {
        padding: 1.25rem;
        border-radius: 16px;
    }

    .page-title h1 { font-size: 1.5rem; }

    .auth-container { padding: 2rem 1rem; }
    .auth-container h1 { font-size: 1.5rem; }

    table th, table td { padding: 0.6rem 0.75rem; font-size: 0.85rem; }


    table td:last-child .btn,
    table td:last-child a.btn { width: 100px; font-size: 0.75rem; padding: 0.35rem 0; }

    .btn { padding: 0.55rem 1.1rem; font-size: 0.85rem; }

    .theme-toggle { padding: 0.3rem 0.4rem; font-size: 0.9rem; }

    .footer {
        padding: 2rem 1rem;
    }

    .footer .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .admin-nav {
        gap: 0.15rem;
        padding: 0.5rem 0.75rem;
        flex-wrap: wrap;
    }

    .admin-nav a { padding: 0.35rem 0.7rem; font-size: 0.8rem; }

    .modal-content {
        width: 95%;
        padding: 1.5rem;
        border-radius: 16px;
    }
}

@media (max-width: 480px) {
    .navbar nav a {
        padding: 0.3rem 0.35rem;
        font-size: 0.75rem;
    }

    .hero {
        padding: 2rem 0.75rem 1.5rem;
    }

    .hero h1 { font-size: 1.4rem; }

    .card h2 { font-size: 1.2rem; }

    .btn-sm { padding: 0.35rem 0.65rem; font-size: 0.75rem; }

    .card .actions { flex-direction: column; }

    table { font-size: 0.8rem; }
    table td:last-child .btn,
    table td:last-child a.btn { width: 85px; font-size: 0.7rem; padding: 0.3rem 0; }

    .page-title {
        flex-direction: column;
        align-items: flex-start;
    }

    .theme-toggle { padding: 0.25rem 0.35rem; font-size: 0.85rem; }
}

/* ===== PARTICIPANT TOOLTIP ===== */
.name-tooltip-cell {
    position: relative;
}

.name-hover {
    border-bottom: 1px dashed var(--text-secondary);
    cursor: help;
}

.participant-tooltip {
    display: none;
    position: fixed;
    z-index: 9999;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.6rem 0.8rem;
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--text);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
    pointer-events: none;
    animation: fadeIn 0.15s ease-out;
}

/* ===== FOCUS VISIBLE (accessibility) ===== */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible),
input:focus:not(:focus-visible) {
    outline: none;
}