/* =============================================
   ICODER Web Platform — Main Stylesheet
   Premium SaaS design with glassmorphism
   ============================================= */

/* ===== CSS Variables / Theming ===== */
:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --transition: .3s cubic-bezier(.4,0,.2,1);
    --shadow: 0 4px 24px rgba(0,0,0,.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,.12);
}

/* ---------- Dark Theme ---------- */
[data-theme="dark"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255,255,255,.04);
    --bg-glass: rgba(255,255,255,.06);
    --bg-glass-hover: rgba(255,255,255,.10);
    --border: rgba(255,255,255,.08);
    --border-hover: rgba(255,255,255,.15);
    --text-primary: #f0f0f5;
    --text-secondary: #9393a8;
    --text-muted: #5c5c72;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-glow: rgba(108,92,231,.25);
    --gradient-hero: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
    --gradient-card: linear-gradient(135deg, rgba(108,92,231,.12) 0%, rgba(162,155,254,.06) 100%);
    --gradient-btn: linear-gradient(135deg, #6c5ce7, #a29bfe);
    --gradient-btn-hover: linear-gradient(135deg, #5a4bd1, #8b80f0);
    --nav-bg: rgba(10,10,15,.75);
    --input-bg: rgba(255,255,255,.05);
    --scrollbar-thumb: rgba(255,255,255,.1);
    --success: #00b894;
    --error: #ff6b6b;
    --warning: #fdcb6e;
}

/* ---------- Light Theme ---------- */
[data-theme="light"] {
    --bg-primary: #f8f9fc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255,255,255,.7);
    --bg-glass: rgba(255,255,255,.65);
    --bg-glass-hover: rgba(255,255,255,.85);
    --border: rgba(0,0,0,.08);
    --border-hover: rgba(0,0,0,.15);
    --text-primary: #1a1a2e;
    --text-secondary: #5c5c72;
    --text-muted: #9393a8;
    --accent: #6c5ce7;
    --accent-light: #6c5ce7;
    --accent-glow: rgba(108,92,231,.15);
    --gradient-hero: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
    --gradient-card: linear-gradient(135deg, rgba(108,92,231,.06) 0%, rgba(162,155,254,.03) 100%);
    --gradient-btn: linear-gradient(135deg, #6c5ce7, #a29bfe);
    --gradient-btn-hover: linear-gradient(135deg, #5a4bd1, #8b80f0);
    --nav-bg: rgba(248,249,252,.8);
    --input-bg: rgba(0,0,0,.03);
    --scrollbar-thumb: rgba(0,0,0,.12);
    --success: #00b894;
    --error: #e74c3c;
    --warning: #f39c12;
}

/* ===== Global Reset ===== */
/* ===== Bootstrap Override — ensure our custom theme takes priority ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) transparent;
}

body {
    font-family: var(--font) !important;
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background var(--transition), color var(--transition);
}

/* Prevent Bootstrap from overriding our link and table styles */
a { text-decoration: none; color: inherit; }
a:hover { color: inherit; }
table { color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

button { cursor: pointer; font-family: var(--font); border: none; background: none; }
input, select, textarea { font-family: var(--font); }
ul { list-style: none; }
img { max-width: 100%; }

/* ===== Loading Screen ===== */
.loader-wrap {
    position: fixed; inset: 0; z-index: 10000;
    background: var(--bg-primary);
    display: flex; align-items: center; justify-content: center;
    transition: opacity .5s, visibility .5s;
}
.loader-wrap.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader {
    width: 44px; height: 44px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Utility ===== */
.section { padding: 100px 0; }

.section-label {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: .75rem; font-weight: 600; letter-spacing: .08em;
    text-transform: uppercase; color: var(--accent-light);
    margin-bottom: 12px;
}
.section-label::before {
    content: ''; width: 20px; height: 2px;
    background: var(--accent); border-radius: 1px;
}
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800; line-height: 1.2;
    margin-bottom: 16px;
}
.section-desc {
    font-size: 1.05rem; color: var(--text-secondary);
    max-width: 560px; margin-bottom: 48px;
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 22px; border-radius: var(--radius-sm);
    background: var(--gradient-btn); color: #fff;
    font-size: .875rem; font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary.btn-sm { padding: 8px 18px; font-size: .82rem; }
.btn-primary.btn-large { padding: 14px 32px; font-size: 1rem; border-radius: 12px; }

.btn-secondary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 32px; border-radius: 12px; font-size: 1rem;
    font-weight: 600; color: var(--text-primary);
    background: var(--bg-glass); border: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
}
.btn-secondary:hover { background: var(--bg-glass-hover); border-color: var(--border-hover); }

.btn-nav {
    padding: 8px 18px; border-radius: var(--radius-sm);
    font-size: .82rem; font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-glass); border: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
}
.btn-nav:hover { background: var(--bg-glass-hover); }

.btn-danger {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 6px 14px; border-radius: 8px;
    background: rgba(255,107,107,.1); color: var(--error);
    font-size: .8rem; font-weight: 600;
    transition: background var(--transition);
}
.btn-danger:hover { background: rgba(255,107,107,.2); }

.btn-outline {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 16px; border-radius: 8px;
    background: transparent; border: 1px solid var(--border);
    color: var(--text-secondary); font-size: .82rem; font-weight: 600;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.btn-outline:hover { background: var(--bg-glass); color: var(--text-primary); border-color: var(--border-hover); }

.btn-download {
    width: 100%; padding: 11px; border-radius: var(--radius-sm);
    background: var(--gradient-btn); color: #fff;
    font-size: .85rem; font-weight: 600;
    display: flex; align-items: center; justify-content: center; gap: 8px;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.btn-download:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow); }
.btn-download svg { width: 16px; height: 16px; }

/* ===== Navbar ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition), border-color var(--transition);
}
.navbar .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}
.nav-logo {
    font-size: 1.35rem; font-weight: 800;
    background: var(--gradient-hero); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
    letter-spacing: -.02em;
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
    padding: 8px 16px; border-radius: 8px;
    font-size: .875rem; font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition), background var(--transition);
}
.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary); background: var(--bg-glass);
}
.nav-actions { display: flex; align-items: center; gap: 12px; }

/* Theme Toggle */
.theme-toggle {
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--bg-glass); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-secondary); font-size: 1.1rem;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.theme-toggle:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
.theme-toggle svg { width: 18px; height: 18px; }

[data-theme="dark"] .theme-icon-moon { display: none; }
[data-theme="light"] .theme-icon-sun { display: none; }

/* Mobile menu button */
.menu-btn {
    display: none; width: 40px; height: 40px;
    background: var(--bg-glass); border: 1px solid var(--border);
    border-radius: 10px; flex-direction: column;
    align-items: center; justify-content: center; gap: 5px;
}
.menu-btn span {
    display: block; width: 18px; height: 2px;
    background: var(--text-primary); border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
}
.menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Flash Messages ===== */
.flash-message {
    position: fixed; top: 76px; left: 50%; transform: translateX(-50%);
    z-index: 1100; padding: 14px 24px; border-radius: 12px;
    font-size: .88rem; font-weight: 500;
    display: flex; align-items: center; gap: 12px;
    box-shadow: var(--shadow-lg);
    animation: slideDown .4s ease-out;
    max-width: 500px; width: 90%;
}
.flash-message button {
    font-size: 1.2rem; color: inherit; opacity: .6;
    transition: opacity var(--transition);
}
.flash-message button:hover { opacity: 1; }
.flash-success {
    background: rgba(0,184,148,.12); border: 1px solid rgba(0,184,148,.3);
    color: var(--success);
}
.flash-error {
    background: rgba(255,107,107,.12); border: 1px solid rgba(255,107,107,.3);
    color: var(--error);
}
@keyframes slideDown { from { opacity: 0; transform: translateX(-50%) translateY(-12px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden; padding-top: 64px;
}
.hero::before {
    content: ''; position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: -100px; right: -100px; pointer-events: none;
}
.hero::after {
    content: ''; position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(116,185,255,.15) 0%, transparent 70%);
    bottom: -50px; left: -50px; pointer-events: none;
}
.hero .container {
    display: flex; align-items: center; justify-content: space-between;
    gap: 60px; position: relative; z-index: 1;
}
.hero-content { max-width: 580px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px 6px 8px; border-radius: 100px;
    background: var(--bg-glass); border: 1px solid var(--border);
    font-size: .8rem; font-weight: 500; color: var(--text-secondary);
    margin-bottom: 28px; animation: fadeInUp .6s both;
}
.hero-badge span {
    padding: 2px 8px; border-radius: 100px;
    background: var(--gradient-btn); color: #fff;
    font-size: .7rem; font-weight: 700;
}
.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900; line-height: 1.08;
    letter-spacing: -.03em; margin-bottom: 24px;
    animation: fadeInUp .6s .1s both;
}
.hero h1 .gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.15rem; color: var(--text-secondary);
    line-height: 1.7; margin-bottom: 36px; max-width: 480px;
    animation: fadeInUp .6s .2s both;
}
.hero-actions {
    display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
    animation: fadeInUp .6s .3s both;
}

/* Hero Code Block */
.hero-visual { flex-shrink: 0; position: relative; animation: fadeInUp .6s .4s both; }
.hero-code-block {
    width: 380px; padding: 28px;
    background: var(--bg-glass); border: 1px solid var(--border);
    border-radius: var(--radius); backdrop-filter: blur(20px);
    font-family: 'Courier New', monospace; font-size: .85rem;
    line-height: 1.8; color: var(--text-secondary);
    box-shadow: var(--shadow-lg);
}
.hero-code-block .line-kw { color: #6c5ce7; }
.hero-code-block .line-fn { color: #74b9ff; }
.hero-code-block .line-str { color: #55efc4; }
.hero-code-block .line-cm { color: var(--text-muted); }
.hero-code-block .dots { display: flex; gap: 6px; margin-bottom: 18px; }
.hero-code-block .dots span { width: 10px; height: 10px; border-radius: 50%; }
.hero-code-block .dots span:nth-child(1) { background: #ff5f57; }
.hero-code-block .dots span:nth-child(2) { background: #ffbd2e; }
.hero-code-block .dots span:nth-child(3) { background: #28ca41; }

.floating-badge {
    position: absolute; padding: 10px 16px; border-radius: 12px;
    background: var(--bg-glass); border: 1px solid var(--border);
    backdrop-filter: blur(12px); font-size: .8rem; font-weight: 600;
    color: var(--text-primary); white-space: nowrap;
    box-shadow: var(--shadow);
    animation: floatBadge 3s ease-in-out infinite;
}
.floating-badge.top { top: -20px; right: -30px; animation-delay: 0s; }
.floating-badge.bottom { bottom: -20px; left: -30px; animation-delay: 1.5s; }

@keyframes floatBadge { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Stats Strip ===== */
.stats {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}
.stats .container {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 32px; text-align: center;
}
.stat-item h3 {
    font-size: 2rem; font-weight: 800;
    background: var(--gradient-hero);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-item p { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }

/* ===== Search / Filter Bar ===== */
.search-filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.search-input-wrap { flex: 1; min-width: 240px; position: relative; }
.search-input-wrap svg {
    position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
    width: 18px; height: 18px; color: var(--text-muted);
}
.search-input-wrap input {
    width: 100%; padding: 14px 16px 14px 46px;
    border-radius: var(--radius-sm);
    background: var(--bg-glass); border: 1px solid var(--border);
    color: var(--text-primary); font-size: .9rem; outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input-wrap input::placeholder { color: var(--text-muted); }
.search-input-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.filter-select {
    padding: 14px 16px; border-radius: var(--radius-sm);
    background: var(--bg-glass); border: 1px solid var(--border);
    color: var(--text-primary); font-size: .9rem;
    outline: none; min-width: 160px;
    transition: border-color var(--transition);
}
.filter-select:focus { border-color: var(--accent); }
.filter-select option { background: var(--bg-secondary); color: var(--text-primary); }

/* ===== Book Cards ===== */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 24px;
}
.book-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    animation: fadeInUp .4s both;
}
.book-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}
.book-card-img {
    width: 100%; height: 180px;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.book-card-img::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to bottom, transparent 60%, var(--bg-card));
}
.book-card-img .book-icon {
    font-size: 3.5rem; position: relative; z-index: 1;
}
.book-card-body { padding: 20px; }

.book-card-category {
    display: inline-block; padding: 3px 10px;
    border-radius: var(--radius-xs); font-size: .7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: .04em; margin-bottom: 10px;
}
.cat-c       { background: rgba(255,107,107,.15); color: #ff6b6b; }
.cat-cpp     { background: rgba(255,165,2,.15);   color: #ffa502; }
.cat-java    { background: rgba(255,118,117,.15);  color: #ff7675; }
.cat-python  { background: rgba(253,203,110,.15);  color: #fdcb6e; }
.cat-js      { background: rgba(0,184,148,.15);    color: #00b894; }
.cat-default { background: rgba(108,92,231,.15);   color: var(--accent-light); }

.book-card-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; line-height: 1.3; }
.book-card-author { font-size: .82rem; color: var(--text-muted); margin-bottom: 16px; }

.empty-state {
    text-align: center; padding: 80px 20px;
    color: var(--text-muted); grid-column: 1 / -1;
}
.empty-state svg { width: 64px; height: 64px; margin-bottom: 16px; opacity: .3; }

/* ===== Categories Grid ===== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}
.category-card {
    padding: 32px 24px; border-radius: var(--radius);
    background: var(--bg-glass); border: 1px solid var(--border);
    text-align: center; cursor: pointer;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.category-card:hover {
    transform: translateY(-4px); border-color: var(--border-hover);
    box-shadow: var(--shadow-lg); background: var(--bg-glass-hover);
}
.category-card .cat-icon {
    width: 56px; height: 56px; margin: 0 auto 16px;
    border-radius: 14px; display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: 800;
}
.category-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.category-card p { font-size: .8rem; color: var(--text-muted); }
.cat-icon-c      { background: rgba(255,107,107,.12); color: #ff6b6b; }
.cat-icon-cpp    { background: rgba(255,165,2,.12);   color: #ffa502; }
.cat-icon-java   { background: rgba(255,118,117,.12);  color: #ff7675; }
.cat-icon-python { background: rgba(253,203,110,.12);  color: #fdcb6e; }
.cat-icon-js     { background: rgba(0,184,148,.12);    color: #00b894; }

/* ===== Pagination ===== */
.pagination {
    display: flex; align-items: center; justify-content: center;
    gap: 8px; margin-top: 48px;
}
.pagination a, .pagination span {
    padding: 10px 16px; border-radius: var(--radius-sm);
    font-size: .88rem; font-weight: 600;
    background: var(--bg-glass); border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.pagination a:hover {
    background: var(--bg-glass-hover); color: var(--text-primary);
    border-color: var(--border-hover);
}
.pagination .active-page {
    background: var(--gradient-btn); color: #fff;
    border-color: transparent;
}

/* ===== Auth Pages ===== */
.auth-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    padding: 100px 24px 60px;
    position: relative;
}
.auth-page::before {
    content: ''; position: absolute;
    width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: -100px; right: -100px; pointer-events: none;
}
.auth-card {
    width: 100%; max-width: 440px; padding: 44px;
    border-radius: var(--radius); position: relative; z-index: 1;
    background: var(--bg-secondary); border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp .5s both;
}
.auth-card h1 {
    font-size: 1.6rem; font-weight: 800; margin-bottom: 6px;
}
.auth-card .auth-sub {
    font-size: .9rem; color: var(--text-muted); margin-bottom: 32px;
}

/* ===== Forms ===== */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block; font-size: .82rem; font-weight: 600;
    color: var(--text-secondary); margin-bottom: 6px;
}
.form-control {
    width: 100%; padding: 12px 16px;
    border-radius: var(--radius-sm);
    background: var(--input-bg); border: 1px solid var(--border);
    color: var(--text-primary); font-size: .9rem; outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-control::placeholder { color: var(--text-muted); }
select.form-control option { background: var(--bg-secondary); color: var(--text-primary); }

.btn-submit {
    width: 100%; padding: 13px; border-radius: var(--radius-sm);
    background: var(--gradient-btn); color: #fff;
    font-size: .9rem; font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.btn-submit:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow); }

.auth-toggle {
    text-align: center; margin-top: 24px;
    font-size: .85rem; color: var(--text-muted);
}
.auth-toggle a { color: var(--accent-light); font-weight: 600; }
.auth-toggle a:hover { text-decoration: underline; }

.form-error {
    font-size: .78rem; color: var(--error); margin-top: 4px;
}

/* ===== Dashboard ===== */
.dashboard-page { padding-top: 100px; padding-bottom: 60px; min-height: 100vh; }
.dashboard-header {
    margin-bottom: 48px;
}
.dashboard-header h1 {
    font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800;
    margin-bottom: 8px;
}
.dashboard-header p { color: var(--text-secondary); }

.dash-stats {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px; margin-bottom: 48px;
}
.dash-stat-card {
    padding: 28px; border-radius: var(--radius);
    background: var(--bg-glass); border: 1px solid var(--border);
    transition: transform var(--transition), border-color var(--transition);
}
.dash-stat-card:hover { transform: translateY(-2px); border-color: var(--border-hover); }
.dash-stat-card .stat-num {
    font-size: 1.8rem; font-weight: 800;
    background: var(--gradient-hero);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.dash-stat-card .stat-label { font-size: .85rem; color: var(--text-muted); margin-top: 4px; }

/* ===== Admin Panel ===== */
.admin-card {
    padding: 32px; border-radius: var(--radius);
    background: var(--bg-glass); border: 1px solid var(--border);
    backdrop-filter: blur(12px);
    margin-bottom: 32px;
}
.admin-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 24px; }

/* Data Table */
.data-table-wrap { overflow-x: auto; }
.data-table {
    width: 100%; border-collapse: collapse;
    font-size: .88rem;
}
.data-table th {
    text-align: left; padding: 14px 16px;
    font-size: .78rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .04em; color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
.data-table td {
    padding: 14px 16px; border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}
.data-table tr:hover td { background: var(--bg-glass); }
.data-table .actions { display: flex; gap: 8px; }

/* ===== Footer ===== */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px; margin-bottom: 48px;
}
.footer-brand .nav-logo { margin-bottom: 12px; display: inline-block; }
.footer-brand p {
    font-size: .88rem; color: var(--text-muted); line-height: 1.7;
    max-width: 300px;
}
.footer-col h4 {
    font-size: .82rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .06em; color: var(--text-muted); margin-bottom: 16px;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a {
    font-size: .88rem; color: var(--text-secondary);
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 24px; border-top: 1px solid var(--border);
    font-size: .82rem; color: var(--text-muted);
}
.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 36px; height: 36px; border-radius: 10px;
    background: var(--bg-glass); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); font-size: .9rem;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.social-links a:hover {
    background: var(--bg-glass-hover); color: var(--text-primary);
    border-color: var(--border-hover);
}
.social-links svg { width: 16px; height: 16px; }

/* ===== Toast ===== */
.toast {
    position: fixed; bottom: 24px; right: 24px; z-index: 3000;
    padding: 14px 24px; border-radius: 12px;
    background: var(--bg-secondary); border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    font-size: .88rem; font-weight: 500; color: var(--text-primary);
    transform: translateY(20px); opacity: 0;
    transition: transform .3s, opacity .3s;
    pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; pointer-events: auto; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero .container { flex-direction: column; text-align: center; }
    .hero p { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-visual { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .section { padding: 72px 0; }
    .nav-links { display: none; }
    .menu-btn { display: flex; }
    .nav-links.mobile-open {
        display: flex; flex-direction: column;
        position: fixed; top: 64px; left: 0; right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        padding: 16px 24px; z-index: 999;
        animation: fadeInUp .3s both;
    }
    .nav-links.mobile-open a { padding: 12px 0; }
    .stats .container { grid-template-columns: 1fr 1fr; }
    .books-grid { grid-template-columns: 1fr; }
    .categories-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .admin-card { padding: 20px; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 2rem; }
    .stats .container { grid-template-columns: 1fr 1fr; gap: 20px; }
    .categories-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; width: 100%; }
    .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; text-align: center; }
    .auth-card { padding: 28px 20px; }
    .dash-stats { grid-template-columns: 1fr; }
}