/* =========================================
   Alexandria — Global Styles
   ========================================= */

:root {
    --gold: #c9a227;
    --gold-light: #e8d48b;
    --gold-dark: #a07d1a;
    --dark: #0a0a0a;
    --darker: #050505;
    --card: #111111;
    --text: #f5f5f5;
    --text-dim: #a0a0a0;
    --border: #1a1a1a;
    --success: #2ecc71;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #3498db;
    --radius: 0px;
    --sidebar-width: 260px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--darker);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1507842217343-583bb7270b66?w=1920&q=60') center/cover no-repeat;
    opacity: 0.06;
    z-index: 9999;
    pointer-events: none;
}

body > * {
    position: relative;
    z-index: 1;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container { max-width: 1800px; margin: 0 auto; padding: 0 4rem; }
.text-gradient { color: var(--gold); }

/* =========================================
   Header
   ========================================= */

.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10,10,10,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-container {
    max-width: 1800px; margin: 0 auto; padding: 1rem 4rem;
    display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}

.logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.5rem; letter-spacing: 0.15em; color: var(--gold);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    flex: 1;
}

.logo-tagline {
    font-family: 'Inter', sans-serif;
    font-size: 0.5rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-dim);
    font-weight: 400;
}

.nav { display: flex; gap: 4rem; justify-content: center; flex: 1; }
.nav-link {
    font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--text-dim); transition: color 0.3s;
}
.nav-link:hover, .nav-link.active { color: var(--gold); }

.header-right { display: flex; align-items: center; gap: 1.5rem; justify-content: flex-end; flex: 1; }

/* ---------- Price Slider ---------- */
.price-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--gray);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.price-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
    cursor: pointer;
    transition: transform 0.2s;
}

.price-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.price-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
    cursor: pointer;
    border: none;
    transition: transform 0.2s;
}

.price-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.header-right { display: flex; align-items: center; gap: 1rem; }

/* Auth Header */
.auth-header-actions { display: flex; align-items: center; gap: 0.75rem; }
.btn-sm {
    padding: 0.5rem 1.2rem; font-size: 0.75rem; letter-spacing: 0.1em;
    text-transform: uppercase; border: 1px solid var(--gold); background: transparent;
    color: var(--gold); cursor: pointer; transition: all 0.3s; font-family: inherit;
    display: inline-block;
}
.btn-sm:hover { background: var(--gold); color: var(--darker); }
.btn-sm.btn-primary { background: var(--gold); color: var(--darker); }
.btn-sm.btn-primary:hover { background: var(--gold-light); }

/* User Menu */
.user-menu { position: relative; }
.user-menu-btn {
    display: flex; align-items: center; gap: 0.5rem;
    background: none; border: 1px solid var(--border); padding: 0.4rem 0.8rem;
    color: var(--text); cursor: pointer; transition: all 0.3s;
}
.user-menu-btn:hover { border-color: var(--gold); }
.user-avatar-small {
    width: 28px; height: 28px; background: var(--gold); color: var(--darker);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 600; border-radius: 50%;
}
.user-name-header { font-size: 0.8rem; }
.user-dropdown {
    position: absolute; top: calc(100% + 0.5rem); right: 0; min-width: 200px;
    background: var(--dark); border: 1px solid var(--border);
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: all 0.2s ease; z-index: 200;
}
.user-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.75rem 1rem; font-size: 0.85rem; color: var(--text-dim);
    transition: all 0.2s; border: none; background: none; width: 100%;
    cursor: pointer; text-align: left; font-family: inherit;
}
.dropdown-item:hover { background: var(--border); color: var(--text); }
.dropdown-logout:hover { color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--border); margin: 0.25rem 0; }

/* Cart */
.cart-btn {
    position: relative; background: none; border: none;
    color: var(--text); cursor: pointer; padding: 0.5rem;
}
.cart-count {
    position: absolute; top: 0; right: 0; background: var(--gold);
    color: var(--darker); font-size: 0.7rem; width: 18px; height: 18px;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
}

/* Hamburger */
.hamburger {
    display: none; background: none; border: none; cursor: pointer;
    padding: 0.5rem; z-index: 110;
}
.hamburger-line {
    display: block; width: 24px; height: 2px; background: var(--text);
    margin: 5px 0; transition: all 0.3s;
}
.hamburger.open .hamburger-line:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger.open .hamburger-line:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

.mobile-menu {
    display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(5,5,5,0.98); z-index: 105; flex-direction: column;
    align-items: center; justify-content: center; gap: 2rem;
    padding: 4rem 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-nav-link {
    font-family: 'Cormorant Garamond', serif; font-size: 2rem;
    color: var(--text-dim); letter-spacing: 0.1em; transition: color 0.3s;
}
.mobile-nav-link:hover { color: var(--gold); }
.mobile-menu-auth {
    display: flex; flex-direction: column; gap: 1rem; align-items: center;
    margin-top: 1rem; width: 100%; max-width: 280px;
}
.mobile-menu-auth .btn { width: 100%; text-align: center; font-size: 0.85rem; padding: 0.8rem 1.5rem; }

/* =========================================
   Buttons
   ========================================= */

.btn {
    display: inline-block; padding: 0.6rem 1.5rem; font-size: 0.7rem;
    letter-spacing: 0.15em; text-transform: uppercase; text-decoration: none;
    border: 1px solid var(--gold); background: transparent; color: var(--gold);
    cursor: pointer; transition: all 0.3s ease; font-family: inherit;
}
.btn:hover { background: var(--gold); color: var(--darker); }
.btn-primary { background: var(--gold); color: var(--darker); }
.btn-primary:hover { background: var(--gold-light); border-color: var(--gold-light); }
.btn-full { width: 100%; text-align: center; }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-success { border-color: var(--success); color: var(--success); }
.btn-success:hover { background: var(--success); color: #fff; }

/* =========================================
   Section Headers
   ========================================= */

.section-tag {
    font-size: 0.75rem; letter-spacing: 0.3em;
    text-transform: uppercase; color: var(--gold);
}
.section-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(2rem,5vw,3.5rem); font-weight: 300; margin-top: 1rem;
}

/* =========================================
   Course Cards
   ========================================= */

.courses-page { padding: 8rem 0 4rem; min-height: 100vh; }
.courses-page-header { text-align: center; margin-bottom: 3rem; }
.courses-page-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(2.5rem,8vw,4rem); font-weight: 300; margin-top: 1rem; line-height: 1.2;
}
.courses-page-desc { color: var(--text-dim); margin-top: 1rem; }

.courses-filters { display: flex; justify-content: center; flex-wrap: wrap; gap: 1rem; margin-bottom: 3rem; }
.filter-btn {
    padding: 0.75rem 1.5rem; font-size: 0.8rem; letter-spacing: 0.1em;
    text-transform: uppercase; border: 1px solid var(--border); background: transparent;
    color: var(--text-dim); cursor: pointer; transition: all 0.3s;
}
.filter-btn:hover, .filter-btn.active { border-color: var(--gold); color: var(--gold); }

.courses-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 2.5rem;
}

.course-card {
    background: var(--dark); border: 1px solid var(--border); padding: 1.25rem;
    transition: all 0.3s ease; display: flex; flex-direction: column;
}
.course-card:hover { border-color: var(--gold); transform: translateY(-5px); }

.course-image {
    margin-bottom: 0.75rem; height: 120px; display: flex;
    align-items: center; justify-content: center; background: var(--darker);
    position: relative; overflow: hidden;
}
.course-icon {
    width: 50px; height: 50px; border: 1px solid var(--gold);
    display: flex; align-items: center; justify-content: center; color: var(--gold);
}
.course-icon svg { width: 24px; height: 24px; }

.course-category { font-size: 0.65rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); }
.course-title { font-size: 1.1rem; margin: 0.5rem 0; }
.course-content { display: flex; flex-direction: column; flex-grow: 1; }
.course-desc { 
    color: var(--text-dim); font-size: 0.85rem; line-height: 1.5; margin-bottom: 1rem; flex-grow: 1;
    display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis;
}

.course-meta {
    display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.75rem;
    font-size: 0.75rem; color: var(--text-dim);
}
.course-meta-item { display: flex; align-items: center; gap: 0.3rem; }
.course-rating { color: var(--gold); }

.course-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.course-tag { font-size: 0.7rem; padding: 0.25rem 0.75rem; border: 1px solid var(--border); color: var(--text-dim); }

.course-footer {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--border);
}
.course-price { font-size: 1.2rem; color: var(--gold); }
.course-price-original {
    font-size: 0.8rem; color: var(--text-dim);
    text-decoration: line-through; margin-right: 0.5rem;
}
.course-btn {
    padding: 0.6rem 1.2rem; font-size: 0.75rem; letter-spacing: 0.1em;
    text-transform: uppercase; border: 1px solid var(--gold); background: transparent;
    color: var(--gold); cursor: pointer; transition: all 0.3s;
    white-space: nowrap; text-align: center;
}
.course-btn:hover { background: var(--gold); color: var(--darker); }

/* =========================================
   Checkout
   ========================================= */

.checkout-page { padding: 8rem 0 4rem; min-height: 100vh; }
.checkout-container { display: grid; grid-template-columns: 1fr 400px; gap: 3rem; margin-top: 3rem; }
.checkout-form { background: var(--dark); padding: 2rem; border: 1px solid var(--border); }
.form-section { margin-bottom: 2rem; }
.form-section-title { font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; color: var(--text-dim); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-input {
    width: 100%; padding: 1rem; font-size: 0.9rem; background: var(--darker);
    border: 1px solid var(--border); color: var(--text); font-family: inherit;
    margin-bottom: 1rem; transition: border-color 0.3s;
}
.form-input:focus { outline: none; border-color: var(--gold); }
.form-input::placeholder { color: var(--text-dim); }

select.form-input { appearance: none; cursor: pointer; }

.checkout-summary {
    background: var(--dark); padding: 2rem; border: 1px solid var(--border);
    height: fit-content; position: sticky; top: 100px;
}
.summary-title { font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1.5rem; }
.summary-items { max-height: 300px; overflow-y: auto; }
.summary-item { display: flex; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--border); }
.summary-item-icon {
    width: 40px; height: 40px; border: 1px solid var(--gold);
    display: flex; align-items: center; justify-content: center;
    color: var(--gold); flex-shrink: 0;
}
.summary-item-icon svg { width: 20px; height: 20px; }
.summary-item-name { font-size: 0.9rem; }
.summary-item-price { color: var(--text-dim); font-size: 0.85rem; }
.summary-totals { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.summary-row { display: flex; justify-content: space-between; padding: 0.5rem 0; color: var(--text-dim); }
.summary-row.total { font-size: 1.2rem; color: var(--gold); padding-top: 1rem; border-top: 1px solid var(--border); margin-top: 0.5rem; }

/* =========================================
   Cart Sidebar
   ========================================= */

.cart-sidebar {
    position: fixed; top: 0; right: -400px; width: 400px; max-width: 90vw;
    height: 100vh; background: var(--dark); border-left: 1px solid var(--border);
    z-index: 200; display: flex; flex-direction: column; transition: right 0.3s ease;
}
.cart-sidebar.open { right: 0; }
.cart-header {
    padding: 1.5rem; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.cart-header h3 { font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; }
.close-cart { background: none; border: none; color: var(--text); cursor: pointer; }
.cart-items { flex: 1; overflow-y: auto; padding: 1rem; }
.cart-empty { text-align: center; color: var(--text-dim); padding: 2rem; }

.cart-item { display: flex; gap: 1rem; padding: 1rem; border-bottom: 1px solid var(--border); }
.cart-item-icon {
    width: 50px; height: 50px; border: 1px solid var(--gold);
    display: flex; align-items: center; justify-content: center;
    color: var(--gold); flex-shrink: 0;
}
.cart-item-icon svg { width: 24px; height: 24px; }
.cart-item-name { font-size: 0.9rem; margin-bottom: 0.25rem; }
.cart-item-price { color: var(--gold); font-size: 0.85rem; }
.cart-item-qty { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.5rem; }
.qty-btn {
    width: 28px; height: 28px; border: 1px solid var(--border); background: transparent;
    color: var(--text); cursor: pointer; display: flex; align-items: center;
    justify-content: center; transition: all 0.3s;
}
.qty-btn:hover { border-color: var(--gold); color: var(--gold); }
.cart-item-remove { background: none; border: none; color: var(--text-dim); font-size: 0.75rem; cursor: pointer; margin-left: auto; }
.cart-item-remove:hover { color: #ff4444; }

.cart-footer { padding: 1.5rem; border-top: 1px solid var(--border); }
.clear-cart-btn {
    width: 100%; padding: 0.75rem; font-size: 0.8rem; letter-spacing: 0.1em;
    text-transform: uppercase; border: 1px solid var(--border); background: transparent;
    color: var(--text-dim); cursor: pointer; margin-bottom: 1rem; transition: all 0.3s;
}
.clear-cart-btn:hover { border-color: #ff4444; color: #ff4444; }
.cart-total { display: flex; justify-content: space-between; font-size: 1.2rem; margin-bottom: 1rem; }
.cart-total span:last-child { color: var(--gold); }

.overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 150;
    opacity: 0; visibility: hidden; transition: all 0.3s ease;
}
.overlay.open { opacity: 1; visibility: visible; }

/* =========================================
   Footer
   ========================================= */

.footer { padding: 4rem 2rem; background: var(--dark); text-align: center; border-top: 1px solid var(--border); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.footer-logo { font-family: 'Cormorant Garamond', serif; font-size: 2rem; letter-spacing: 0.2em; color: var(--gold); }
.footer-tagline { font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); margin-top: -0.5rem; }
.footer-copy { color: var(--text-dim); font-size: 0.8rem; }
.footer-links { display: flex; gap: 2rem; margin-top: 0.5rem; }
.footer-link { color: var(--text-dim); font-size: 0.8rem; transition: color 0.3s; }
.footer-link:hover { color: var(--gold); }

/* =========================================
   Contact
   ========================================= */

.contact-page { padding: 8rem 0 4rem; min-height: 100vh; }
.contact-container { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact-title { font-family: 'Cormorant Garamond', serif; font-size: clamp(2.5rem,6vw,3.5rem); font-weight: 300; margin-top: 1rem; line-height: 1.2; }
.contact-desc { color: var(--text-dim); margin: 1rem 0 2rem; font-size: 1rem; line-height: 1.6; }
.contact-methods { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-method { display: flex; align-items: center; gap: 1rem; }
.contact-icon { width: 50px; height: 50px; border: 1px solid var(--gold); display: flex; align-items: center; justify-content: center; color: var(--gold); }
.contact-label { font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); }
.contact-value { font-size: 1rem; }
.contact-form { background: var(--dark); padding: 2rem; border: 1px solid var(--border); }

/* =========================================
   Auth Pages (Login/Register)
   ========================================= */

.auth-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    padding: 2rem; background: var(--darker);
}
.auth-card {
    width: 100%; max-width: 440px; background: var(--dark); border: 1px solid var(--border);
    padding: 3rem; position: relative;
}
.auth-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.auth-logo {
    font-family: 'Cormorant Garamond', serif; font-size: 2.5rem;
    color: var(--gold); text-align: center; letter-spacing: 0.2em; margin-bottom: 0.5rem;
}
.auth-subtitle { text-align: center; color: var(--text-dim); font-size: 0.9rem; margin-bottom: 2rem; }
.auth-form { display: flex; flex-direction: column; gap: 0; }
.auth-form .form-input { margin-bottom: 1rem; }
.auth-form .btn { margin-top: 0.5rem; }
.auth-links { text-align: center; margin-top: 1.5rem; font-size: 0.85rem; color: var(--text-dim); }
.auth-links a { color: var(--gold); transition: color 0.3s; }
.auth-links a:hover { color: var(--gold-light); }
.auth-error {
    background: rgba(231,76,60,0.1); border: 1px solid var(--danger);
    color: var(--danger); padding: 0.75rem; font-size: 0.85rem;
    margin-bottom: 1rem; display: none; text-align: center;
}
.auth-error.show { display: block; }
.auth-role-select { display: flex; gap: 1rem; margin-bottom: 1rem; }
.role-option {
    flex: 1; padding: 1rem; border: 1px solid var(--border); background: var(--darker);
    color: var(--text-dim); cursor: pointer; text-align: center; transition: all 0.3s;
    font-size: 0.85rem;
}
.role-option:hover, .role-option.active { border-color: var(--gold); color: var(--gold); }

/* =========================================
   Course Detail / Sales Page
   ========================================= */

.course-detail-page { padding-top: 70px; min-height: 100vh; }
.course-detail-hero {
    padding: 4rem 0; background: linear-gradient(180deg, var(--dark) 0%, var(--darker) 100%);
    border-bottom: 1px solid var(--border);
}
.course-detail-grid { display: grid; grid-template-columns: 1fr 380px; gap: 3rem; align-items: start; }
.course-detail-tag { font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); }
.course-detail-title {
    font-family: 'Cormorant Garamond', serif; font-size: clamp(2rem,4vw,3rem);
    font-weight: 300; margin: 1rem 0; line-height: 1.2;
}
.course-detail-desc { color: var(--text-dim); line-height: 1.7; margin-bottom: 1.5rem; }
.course-detail-meta { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.course-detail-meta-item {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.85rem; color: var(--text-dim);
}
.course-detail-meta-item svg { color: var(--gold); }

.course-purchase-card {
    background: var(--dark); border: 1px solid var(--border); padding: 2rem;
    position: sticky; top: 90px;
}
.course-purchase-price {
    font-size: 2.5rem; color: var(--gold); font-weight: 300; margin-bottom: 0.5rem;
}
.course-purchase-original { font-size: 1rem; color: var(--text-dim); text-decoration: line-through; }
.course-purchase-features { list-style: none; margin: 1.5rem 0; }
.course-purchase-features li {
    padding: 0.5rem 0; color: var(--text-dim); font-size: 0.85rem;
    display: flex; align-items: center; gap: 0.5rem;
    border-bottom: 1px solid var(--border);
}
.course-purchase-features li svg { color: var(--gold); flex-shrink: 0; }

.course-content-section { padding: 4rem 0; }
.course-modules { margin-top: 2rem; }
.course-module {
    background: var(--dark); border: 1px solid var(--border); margin-bottom: 1rem;
}
.course-module-header {
    padding: 1.25rem 1.5rem; display: flex; align-items: center;
    justify-content: space-between; cursor: pointer; transition: all 0.3s;
}
.course-module-header:hover { background: rgba(201,162,39,0.05); }
.course-module-title { font-size: 1rem; font-weight: 500; }
.course-module-count { font-size: 0.8rem; color: var(--text-dim); }
.course-module-lessons { display: none; border-top: 1px solid var(--border); }
.course-module-lessons.open { display: block; }
.course-lesson {
    padding: 1rem 1.5rem; display: flex; align-items: center; gap: 1rem;
    border-bottom: 1px solid var(--border); font-size: 0.9rem; color: var(--text-dim);
}
.course-lesson:last-child { border-bottom: none; }
.course-lesson-duration { margin-left: auto; font-size: 0.8rem; }

/* Instructor Card */
.instructor-card {
    display: flex; gap: 1.5rem; align-items: center; background: var(--dark);
    border: 1px solid var(--border); padding: 2rem; margin-top: 2rem;
}
.instructor-avatar {
    width: 80px; height: 80px; background: var(--gold); color: var(--darker);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 300; border-radius: 50%; flex-shrink: 0;
    font-family: 'Cormorant Garamond', serif;
}
.instructor-name { font-size: 1.1rem; margin-bottom: 0.25rem; }
.instructor-specialty { font-size: 0.8rem; color: var(--gold); letter-spacing: 0.1em; text-transform: uppercase; }
.instructor-bio { font-size: 0.85rem; color: var(--text-dim); margin-top: 0.5rem; line-height: 1.5; }

/* Reviews */
.reviews-section { margin-top: 3rem; }
.review-card {
    background: var(--dark); border: 1px solid var(--border); padding: 1.5rem;
    margin-bottom: 1rem;
}
.review-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.review-author { font-size: 0.9rem; }
.review-stars { color: var(--gold); }
.review-text { font-size: 0.85rem; color: var(--text-dim); line-height: 1.5; }
.review-date { font-size: 0.75rem; color: var(--text-dim); margin-top: 0.5rem; }

/* =========================================
   Student Area
   ========================================= */

.student-page { padding: 6rem 0 4rem; min-height: 100vh; }
.student-header { margin-bottom: 3rem; }
.student-greeting {
    font-family: 'Cormorant Garamond', serif; font-size: clamp(2rem,4vw,3rem);
    font-weight: 300; margin-bottom: 0.5rem;
}
.student-sub { color: var(--text-dim); }

.student-courses-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; }
.student-course-card {
    background: var(--dark); border: 1px solid var(--border); padding: 1.5rem;
    transition: all 0.3s; cursor: pointer;
}
.student-course-card:hover { border-color: var(--gold); }
.student-course-title { font-size: 1.1rem; margin-bottom: 0.5rem; }
.student-course-instructor { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 1rem; }

.progress-bar { height: 4px; background: var(--border); margin: 1rem 0 0.5rem; position: relative; }
.progress-bar-fill { height: 100%; background: var(--gold); transition: width 0.5s ease; }
.progress-text { font-size: 0.75rem; color: var(--text-dim); text-align: right; }

/* Lesson Player */
.lesson-page { padding-top: 70px; min-height: 100vh; display: flex; }
.lesson-sidebar {
    width: 320px; background: var(--dark); border-right: 1px solid var(--border);
    height: calc(100vh - 70px); overflow-y: auto; flex-shrink: 0;
    position: sticky; top: 70px;
}
.lesson-sidebar-header { padding: 1.5rem; border-bottom: 1px solid var(--border); }
.lesson-sidebar-title { font-size: 0.9rem; font-weight: 500; }
.lesson-sidebar-back { font-size: 0.8rem; color: var(--gold); margin-top: 0.5rem; display: block; }

.lesson-module-group { border-bottom: 1px solid var(--border); }
.lesson-module-label {
    padding: 1rem 1.5rem; font-size: 0.8rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--text-dim); background: rgba(0,0,0,0.3);
}
.lesson-item {
    padding: 0.85rem 1.5rem; display: flex; align-items: center; gap: 0.75rem;
    font-size: 0.88rem; color: #ddd; cursor: pointer;
    transition: all 0.2s; border-left: 3px solid transparent;
}
.lesson-item:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.lesson-item.active { border-left-color: var(--gold); color: var(--gold); background: rgba(201,162,39,0.12); }
.lesson-item.completed { color: var(--success); }
.lesson-item-check { 
    width: 20px; height: 20px; border: 1px solid #333; 
    display: flex; align-items: center; justify-content: center; 
    flex-shrink: 0; font-size: 0.8rem; transition: all 0.2s;
    background: rgba(255,255,255,0.05);
}
.lesson-item-check:hover { border-color: var(--gold); transform: scale(1.1); background: rgba(201,162,39,0.15); }
.lesson-item.completed .lesson-item-check { border-color: var(--success); color: var(--success); background: rgba(46,204,113,0.1); }
.lesson-item-duration { margin-left: auto; font-size: 0.75rem; }

.lesson-content { flex: 1; padding: 2rem; }
.lesson-video {
    width: 100%; aspect-ratio: 16/9; background: var(--dark);
    border: 1px solid var(--border); display: flex; align-items: center;
    justify-content: center; margin-bottom: 2rem; position: relative;
}
.lesson-video-placeholder {
    text-align: center; color: var(--text-dim);
}
.lesson-video-placeholder svg { width: 48px; height: 48px; color: var(--gold); margin-bottom: 1rem; }
.lesson-title-main { font-size: 1.5rem; margin-bottom: 0.5rem; }
.lesson-desc { color: var(--text-dim); line-height: 1.7; }
.lesson-nav {
    display: flex; justify-content: space-between; margin-top: 2rem;
    padding-top: 2rem; border-top: 1px solid var(--border);
}
.lesson-complete-btn {
    padding: 0.75rem 2rem; border: 1px solid var(--success); background: transparent;
    color: var(--success); cursor: pointer; font-size: 0.85rem; letter-spacing: 0.1em;
    text-transform: uppercase; transition: all 0.3s; font-family: inherit;
}
.lesson-complete-btn:hover { background: var(--success); color: #fff; }
.lesson-complete-btn.completed { background: var(--success); color: #fff; pointer-events: none; }

/* =========================================
   Dashboard Layout (Admin & Professor)
   ========================================= */

.dashboard-layout { display: flex; min-height: 100vh; padding-top: 70px; }

.dash-sidebar {
    width: var(--sidebar-width); background: var(--dark); border-right: 1px solid var(--border);
    height: calc(100vh - 70px); position: sticky; top: 70px; overflow-y: auto;
    display: flex; flex-direction: column;
}
.dash-sidebar-header {
    padding: 1.5rem; border-bottom: 1px solid var(--border);
}
.dash-sidebar-role {
    font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--gold); margin-bottom: 0.25rem;
}
.dash-sidebar-name { font-size: 1rem; }
.dash-sidebar-nav { padding: 1rem 0; flex: 1; }
.dash-nav-item {
    display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1.5rem;
    font-size: 0.85rem; color: var(--text-dim); transition: all 0.2s;
    border-left: 3px solid transparent;
}
.dash-nav-item:hover { color: var(--text); background: rgba(201,162,39,0.05); }
.dash-nav-item.active { border-left-color: var(--gold); color: var(--gold); background: rgba(201,162,39,0.08); }
.dash-nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

.dash-content { flex: 1; padding: 2rem; max-width: calc(100% - var(--sidebar-width)); }
.dash-content-header { margin-bottom: 2rem; }
.dash-page-title {
    font-family: 'Cormorant Garamond', serif; font-size: 2rem;
    font-weight: 300; margin-bottom: 0.5rem;
}
.dash-page-desc { color: var(--text-dim); font-size: 0.9rem; }

/* Stats Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 1rem; margin-bottom: 2rem; }
.stat-card {
    background: var(--dark); border: 1px solid var(--border); padding: 1.5rem;
    transition: all 0.3s;
}
.stat-card:hover { border-color: var(--gold); }
.stat-label { font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 0.5rem; }
.stat-value { font-size: 2rem; font-weight: 300; color: var(--gold); }
.stat-change { font-size: 0.75rem; margin-top: 0.25rem; }
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* Chart */
.chart-card {
    background: var(--dark); border: 1px solid var(--border); padding: 1.5rem;
    margin-bottom: 2rem;
}
.chart-title { font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1.5rem; }

/* Filter Bar */
.filter-bar { display: flex; align-items: center; gap: 1rem; margin-bottom: 2rem; background: var(--dark); border: 1px solid var(--border); padding: 1rem; }
.filter-label { font-size: 0.875rem; color: var(--text-dim); }
.filter-select {
    background: var(--bg); border: 1px solid var(--border); color: var(--text);
    padding: 0.5rem 1rem; font-size: 0.875rem; cursor: pointer;
}
.filter-select:focus { outline: none; border-color: var(--gold); }
.chart-bars { display: flex; align-items: flex-end; gap: 0.5rem; height: 200px; padding-top: 1rem; }
.chart-bar-group { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.chart-bar {
    width: 100%; max-width: 40px; background: var(--gold); min-height: 4px;
    transition: height 0.5s ease; opacity: 0.7;
}
.chart-bar:hover { opacity: 1; }
.chart-bar-label { font-size: 0.7rem; color: var(--text-dim); }
.chart-bar-value { font-size: 0.7rem; color: var(--gold); }

/* Data Table */
.data-table-wrapper { overflow-x: auto; }
.data-table {
    width: 100%; border-collapse: collapse; font-size: 0.85rem;
}
.data-table th {
    text-align: left; padding: 1rem; font-size: 0.75rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--text-dim); border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.data-table td {
    padding: 1rem; border-bottom: 1px solid var(--border); color: var(--text-dim);
}
.data-table tr:hover td { color: var(--text); background: rgba(201,162,39,0.03); }

.badge {
    display: inline-block; padding: 0.2rem 0.6rem; font-size: 0.7rem;
    letter-spacing: 0.05em; text-transform: uppercase;
}
.badge-success { background: rgba(46,204,113,0.15); color: var(--success); border: 1px solid rgba(46,204,113,0.3); }
.badge-warning { background: rgba(243,156,18,0.15); color: var(--warning); border: 1px solid rgba(243,156,18,0.3); }
.badge-danger { background: rgba(231,76,60,0.15); color: var(--danger); border: 1px solid rgba(231,76,60,0.3); }
.badge-info { background: rgba(52,152,219,0.15); color: var(--info); border: 1px solid rgba(52,152,219,0.3); }

/* Action Buttons */
.action-btn {
    padding: 0.4rem 0.8rem; font-size: 0.75rem; border: 1px solid var(--border);
    background: transparent; color: var(--text-dim); cursor: pointer;
    transition: all 0.3s; font-family: inherit;
}
.action-btn:hover { border-color: var(--gold); color: var(--gold); }
.action-btn-danger:hover { border-color: var(--danger); color: var(--danger); }
.actions-cell { display: flex; gap: 0.5rem; }

/* =========================================
   Modal
   ========================================= */

.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.8);
    z-index: 300; display: none; align-items: center; justify-content: center; padding: 2rem;
}
.modal-overlay.open { display: flex; }
.modal {
    background: var(--dark); border: 1px solid var(--border); width: 100%;
    max-width: 600px; max-height: 90vh; overflow-y: auto; position: relative;
}
.modal::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.modal-header {
    padding: 1.5rem 2rem; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; }
.modal-close {
    background: none; border: none; color: var(--text-dim); cursor: pointer;
    font-size: 1.2rem; transition: color 0.3s;
}
.modal-close:hover { color: var(--text); }
.modal-body { padding: 2rem; }
.modal-footer { padding: 1.5rem 2rem; border-top: 1px solid var(--border); display: flex; gap: 1rem; justify-content: flex-end; }

/* =========================================
   Stats Section (Homepage)
   ========================================= */

.stats-section {
    padding: 6rem 2rem; background: var(--dark);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stats-section .stats-grid { max-width: 1200px; margin: 0 auto; }
.home-stat { text-align: center; padding: 2rem; }
.home-stat-value {
    font-family: 'Cormorant Garamond', serif; font-size: 3rem;
    color: var(--gold); font-weight: 300;
}
.home-stat-label {
    font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--text-dim); margin-top: 0.5rem;
}

/* Testimonials */
.testimonials-section { padding: 6rem 2rem; background: var(--darker); }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 1.5rem; margin-top: 3rem; }
.testimonial-card {
    background: var(--dark); border: 1px solid var(--border); padding: 2rem;
    position: relative;
}
.testimonial-card::before {
    content: '"'; position: absolute; top: 1rem; left: 1.5rem;
    font-family: 'Cormorant Garamond', serif; font-size: 4rem;
    color: var(--gold); opacity: 0.2; line-height: 1;
}
.testimonial-text { color: var(--text-dim); font-size: 0.9rem; line-height: 1.6; margin-bottom: 1.5rem; padding-top: 1rem; }
.testimonial-author { font-size: 0.9rem; }
.testimonial-role { font-size: 0.75rem; color: var(--gold); letter-spacing: 0.1em; text-transform: uppercase; }

/* =========================================
   Settings Page
   ========================================= */

.settings-grid { display: grid; gap: 2rem; max-width: 600px; }
.settings-card {
    background: var(--dark); border: 1px solid var(--border); padding: 2rem;
}
.settings-card-title {
    font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase;
    margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border);
}

/* =========================================
   Empty State
   ========================================= */

.empty-state {
    text-align: center; padding: 4rem 2rem; color: var(--text-dim);
}
.empty-state svg { width: 48px; height: 48px; color: var(--gold); margin-bottom: 1rem; opacity: 0.5; }
.empty-state-title { font-size: 1.1rem; color: var(--text); margin-bottom: 0.5rem; }
.empty-state-text { font-size: 0.9rem; }

/* =========================================
   Pagination & Search
   ========================================= */

.table-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.search-input {
    padding: 0.75rem 1rem; background: var(--darker); border: 1px solid var(--border);
    color: var(--text); font-size: 0.85rem; font-family: inherit; min-width: 250px;
    transition: border-color 0.3s;
}
.search-input:focus { outline: none; border-color: var(--gold); }
.search-input::placeholder { color: var(--text-dim); }

/* =========================================
   Responsive
   ========================================= */

@media (max-width: 1024px) {
    .dash-sidebar { display: none; }
    .dash-content { max-width: 100%; padding: 1.5rem; }
    .lesson-sidebar { width: 260px; }
    .course-detail-grid { grid-template-columns: 1fr; }
    .course-purchase-card { position: static; }
    .container { padding: 0 2rem; }
    .header-container { padding: 1rem 2rem; }
}

@media (max-width: 900px) {
    .checkout-container { grid-template-columns: 1fr; }
    .checkout-summary { position: static; }
    .contact-container { grid-template-columns: 1fr; }
    .courses-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
    .student-courses-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .hamburger { display: block; }
    .auth-header-actions { display: none !important; }
    .cart-btn { display: none !important; }
    .user-menu { display: none !important; }
    .header-container { padding: 0.75rem 1rem; gap: 0.75rem; }
    .header-right { gap: 0.5rem; }
    .logo { font-size: 1.2rem; }

    .lesson-page { flex-direction: column; }
    .lesson-sidebar { width: 100%; height: auto; position: static; max-height: 300px; }
    .lesson-content { padding: 1.5rem 1rem; }
    .lesson-title-main { font-size: 1.2rem; }
    .lesson-nav { flex-direction: column; gap: 1rem; }
    .lesson-nav .btn { text-align: center; }

    .testimonials-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .instructor-card { flex-direction: column; text-align: center; }
    .user-name-header { display: none; }
    .container { padding: 0 1.25rem; }

    .courses-page { padding: 6rem 0 3rem; }
    .checkout-page { padding: 6rem 0 3rem; }
    .contact-page { padding: 6rem 0 3rem; }
    .student-page { padding: 5rem 0 3rem; }

    .course-detail-hero { padding: 2rem 0; }
    .course-content-section { padding: 2rem 0; }
    .course-purchase-card { padding: 1.5rem; }
    .course-detail-title { font-size: clamp(1.5rem, 5vw, 2.5rem); }

    .features-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .stats-section { padding: 3rem 1rem; }
    .home-stat-value { font-size: 2.2rem; }

    .footer { padding: 2.5rem 1rem; }
    .footer-links { flex-wrap: wrap; justify-content: center; gap: 1rem; }

    .btn-sm { padding: 0.4rem 0.8rem; font-size: 0.7rem; }
    .auth-header-actions { gap: 0.5rem; }
    .auth-header-actions .btn-sm { padding: 0.35rem 0.6rem; font-size: 0.65rem; letter-spacing: 0.05em; }

    .user-menu-btn { padding: 0.3rem 0.5rem; }
    .user-avatar-small { width: 24px; height: 24px; font-size: 0.7rem; }

    .cart-sidebar { width: 100%; max-width: 100vw; right: -100%; }
    .cart-sidebar.open { right: 0; }

    .course-modules .course-module-header { padding: 1rem; }
    .course-lesson { padding: 0.75rem 1rem; }

    .modal { margin: 1rem; max-width: calc(100vw - 2rem); }
    .modal-header { padding: 1rem 1.25rem; }
    .modal-body { padding: 1.25rem; }
    .modal-footer { padding: 1rem 1.25rem; }

    .review-card { padding: 1rem; }
    .review-header { flex-wrap: wrap; gap: 0.5rem; }
}

@media (max-width: 600px) {
    .courses-grid { grid-template-columns: 1fr; }
    .student-courses-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .auth-card { padding: 1.5rem 1rem; }
    .container { padding: 0 1rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .hero-cta { flex-direction: column; gap: 1rem; align-items: center; }
    .hero-cta .btn { width: 100%; max-width: 280px; text-align: center; }
    .table-header { flex-direction: column; align-items: stretch; }
    .search-input { min-width: unset; width: 100%; }

    .header-container { padding: 0.5rem 0.75rem; }
    .logo { font-size: 1rem; letter-spacing: 0.08em; }
    .logo-tagline { font-size: 0.4rem; }

    .section-title { font-size: clamp(1.5rem, 6vw, 2.5rem); }
    .courses-page-title { font-size: clamp(1.8rem, 7vw, 3rem); }
    .contact-title { font-size: clamp(1.8rem, 7vw, 3rem); }
    .student-greeting { font-size: clamp(1.5rem, 5vw, 2.5rem); }

    .course-card { padding: 1rem; }
    .course-footer { flex-direction: column; gap: 1rem; align-items: stretch; }
    .course-footer > div:last-child { display: flex; gap: 0.5rem; }
    .course-btn { flex: 1; text-align: center; }

    .courses-filters { gap: 0.5rem; }
    .filter-btn { padding: 0.5rem 0.75rem; font-size: 0.7rem; }

    .checkout-form { padding: 1.25rem; }
    .checkout-summary { padding: 1.25rem; }
    .form-section-title { font-size: 0.85rem; }

    .contact-form { padding: 1.25rem; }
    .contact-icon { width: 40px; height: 40px; }
    .contact-value { font-size: 0.85rem; }

    .testimonial-card { padding: 1.25rem; }
    .testimonials-section { padding: 3rem 0.5rem; }

    .course-detail-meta { flex-direction: column; gap: 0.5rem; }

    .auth-role-select { flex-direction: column; }
    .role-option { padding: 0.75rem; }

    .dash-page-title { font-size: 1.5rem; }
    .dash-content { padding: 1rem; }
}

@media (max-width: 380px) {
    .header-container { padding: 0.5rem; }
    .auth-header-actions .btn-sm { padding: 0.3rem 0.5rem; font-size: 0.6rem; }
    .cart-btn { padding: 0.3rem; }
    .cart-count { width: 16px; height: 16px; font-size: 0.6rem; }
    .home-stat-value { font-size: 1.8rem; }
    .home-stat-label { font-size: 0.65rem; }
    .hero-cta .btn { font-size: 0.65rem; }
}