/* ==============================================================
   TECHSPIRE ACADEMY — Official Design System & UI Stylesheet
   Brand Colors:
   - Primary Purple-Blue: #5145FF
   - Deep Purple: #4338CA
   - Dark Navy: #11162B
   - Secondary Navy: #1C2340
   - Light Lavender: #F1EFFF
   - Very Light Background: #F8F9FF
   - White: #FFFFFF
   - Primary Text: #171A2B
   - Secondary Text: #697086
   - Border: #E5E7F0
   - Success: #16A34A
   - Warning: #F59E0B
   - Error: #DC2626
   ============================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
    /* Brand Palette */
    --primary: #5145FF;
    --primary-hover: #4338CA;
    --primary-dark: #3730A3;
    --primary-light: #F1EFFF;
    --primary-gradient: linear-gradient(135deg, #5145FF 0%, #695CFE 100%);
    
    /* Supporting Logo Accents (Orange, Yellow, Green, Cyan) */
    --accent-orange: #FF6B4A;
    --accent-yellow: #F59E0B;
    --accent-green: #16A34A;
    --accent-cyan: #0EA5E9;
    
    /* Neutrals */
    --navy-900: #11162B;
    --navy-800: #1C2340;
    --navy-700: #2D3748;
    --navy-600: #697086;
    --navy-400: #9CA3AF;
    --navy-200: #E2E8F0;
    --navy-100: #F1F4F9;
    --navy-50: #F8F9FF;
    
    --body-bg: #F8F9FF;
    --card-bg: #FFFFFF;
    --text-primary: #171A2B;
    --text-secondary: #697086;
    --border-color: #E5E7F0;
    --border-light: #F1F3F9;
    
    /* Statuses */
    --success: #16A34A;
    --success-light: #DCFCE7;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --error: #DC2626;
    --error-light: #FEE2E2;
    --info: #0284C7;
    --info-light: #E0F2FE;
    
    /* Radii */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(17, 22, 43, 0.04);
    --shadow-sm: 0 2px 4px rgba(17, 22, 43, 0.05);
    --shadow-md: 0 4px 16px -2px rgba(17, 22, 43, 0.08), 0 2px 6px -2px rgba(17, 22, 43, 0.04);
    --shadow-lg: 0 12px 32px -4px rgba(81, 69, 255, 0.12), 0 4px 12px -2px rgba(17, 22, 43, 0.04);
    --shadow-glow: 0 8px 24px rgba(81, 69, 255, 0.22);
    
    /* Typography */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--body-bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--navy-900);
    font-weight: 700;
    line-height: 1.25;
}

h1 { font-size: 2.5rem; letter-spacing: -0.03em; }
h2 { font-size: 2rem; letter-spacing: -0.02em; }
h3 { font-size: 1.5rem; letter-spacing: -0.01em; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 0.95rem; }

p {
    color: var(--text-secondary);
    line-height: 1.65;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==============================================================
   CONTAINERS & GRIDS
   ============================================================== */
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-fluid {
    width: 100%;
    padding: 0 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* ==============================================================
   BUTTONS
   ============================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 14.5px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1.4;
}

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

.btn-primary {
    background: var(--primary);
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(81, 69, 255, 0.22);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 6px 18px rgba(81, 69, 255, 0.32);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--navy-800);
    color: #ffffff !important;
}

.btn-secondary:hover {
    background: var(--navy-900);
}

.btn-outline {
    background: transparent;
    color: var(--primary) !important;
    border-color: #D6D2FE;
}

.btn-outline:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

.btn-outline-dark {
    background: transparent;
    color: var(--navy-800) !important;
    border-color: var(--border-color);
}

.btn-outline-dark:hover {
    background: #F1F4F9;
    border-color: var(--navy-400);
}

.btn-success {
    background: var(--success);
    color: #ffffff !important;
}

.btn-success:hover {
    background: #15803D;
}

.btn-danger {
    background: var(--error);
    color: #ffffff !important;
}

.btn-danger:hover {
    background: #B91C1C;
}

.btn-sm {
    padding: 7px 14px;
    font-size: 13px;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

/* ==============================================================
   BADGES & STATUS PILLS
   ============================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.3;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-success {
    background: var(--success-light);
    color: #14532D;
}

.badge-warning {
    background: var(--warning-light);
    color: #92400E;
}

.badge-danger {
    background: var(--error-light);
    color: #991B1B;
}

.badge-info {
    background: var(--info-light);
    color: #0369A1;
}

.badge-dark {
    background: var(--navy-800);
    color: #ffffff;
}

/* ==============================================================
   CARDS
   ============================================================== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: #D6D2FE;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #ffffff;
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--navy-50);
}

/* Metric Stats Card */
.metric-card {
    padding: 22px 24px;
    border-radius: var(--radius-lg);
    background: #ffffff;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.25s ease;
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: #D6D2FE;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.metric-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.metric-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: var(--navy-900);
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 6px;
}

.metric-footer {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==============================================================
   DATA TABLES
   ============================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    text-align: left;
}

.table thead th {
    background: var(--navy-50);
    padding: 14px 18px;
    font-weight: 700;
    color: var(--navy-800);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    text-transform: uppercase;
    font-size: 11.5px;
    letter-spacing: 0.5px;
}

.table tbody td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background-color: #FAF9FF;
}

/* ==============================================================
   FORMS & INPUTS
   ============================================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--navy-800);
    margin-bottom: 6px;
}

.form-control, .form-select, textarea.form-control {
    width: 100%;
    padding: 11px 14px;
    font-family: var(--font-sans);
    font-size: 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #ffffff;
    color: var(--navy-900);
    outline: none;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus, textarea.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(81, 69, 255, 0.15);
}

.form-control::placeholder {
    color: var(--navy-400);
}

.form-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.form-error {
    font-size: 12px;
    color: var(--error);
    margin-top: 5px;
    font-weight: 500;
}

/* Password with Toggle */
.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 44px;
}

.password-toggle-btn {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: var(--navy-400);
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle-btn:hover {
    color: var(--navy-800);
}

/* Custom Checkbox */
.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-check label {
    font-size: 13.5px;
    color: var(--navy-800);
    cursor: pointer;
    user-select: none;
}

/* ==============================================================
   PUBLIC NAVBAR
   ============================================================== */
.navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.brand-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.brand-logo img {
    height: 44px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--navy-700);
    transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Language Dropdown Selector */
.lang-selector {
    position: relative;
    display: inline-block;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    background: var(--navy-50);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--navy-800);
    cursor: pointer;
}

.lang-btn:hover {
    background: var(--navy-100);
}

.lang-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    min-width: 140px;
    z-index: 110;
    overflow: hidden;
}

.lang-dropdown.show {
    display: block;
}

.lang-dropdown a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--navy-800);
    text-decoration: none;
}

.lang-dropdown a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--navy-900);
    cursor: pointer;
    padding: 4px;
}

/* ==============================================================
   HERO SECTION
   ============================================================== */
.hero {
    position: relative;
    padding: 72px 0 64px;
    background: radial-gradient(circle at 10% 20%, rgba(81, 69, 255, 0.05) 0%, rgba(248, 249, 255, 1) 70%);
    overflow: hidden;
    border-bottom: 1px solid var(--border-light);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: center;
}

.hero-badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    border: 1px solid #D6D2FE;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    box-shadow: var(--shadow-xs);
    margin-bottom: 20px;
}

.hero-title {
    font-size: 46px;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 18px;
    color: var(--navy-900);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.hero-stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.hero-stat-item h4 {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    font-family: var(--font-heading);
}

.hero-stat-item p {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 2px;
}

/* Hero Media Visual Card */
.hero-visual-card {
    background: #ffffff;
    border: 1px solid #D6D2FE;
    border-radius: var(--radius-xl);
    padding: 32px 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 440px;
    width: 100%;
    margin: 0 auto;
}

.hero-emblem-badge {
    width: 130px;
    height: 130px;
    margin: 0 auto 20px;
    background: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    padding: 12px;
    border: 2px solid #EEECFF;
}

/* ==============================================================
   COURSE CARD COMPONENT
   ============================================================== */
.course-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card-thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #11162B;
    overflow: hidden;
    display: block;
}

.course-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.course-card:hover .course-card-thumb img {
    transform: scale(1.05);
}

.course-card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
}

.course-card-price-badge {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(17, 22, 43, 0.9);
    backdrop-filter: blur(4px);
    color: #ffffff;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-heading);
}

.course-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.course-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.course-title {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 8px;
    color: var(--navy-900);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-instructor {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.course-footer {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.course-pricing {
    display: flex;
    flex-direction: column;
}

.course-pricing .current-price {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
}

.course-pricing .original-price {
    font-size: 13px;
    color: var(--navy-400);
    text-decoration: line-through;
}

/* ==============================================================
   TECHSPIRE PLUS SECTION (Dark Navy)
   ============================================================== */
.mentorship-section {
    background: #11162B;
    color: #ffffff;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.mentorship-card {
    background: rgba(28, 35, 64, 0.7);
    border: 1px solid rgba(81, 69, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

/* ==============================================================
   DASHBOARD LAYOUT (Admin & Student)
   ============================================================== */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
}

.dashboard-sidebar {
    width: 260px;
    background: #ffffff;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 50;
}

.sidebar-brand {
    padding: 20px 22px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

.sidebar-brand img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.sidebar-menu {
    padding: 16px 12px;
    list-style: none;
    flex-grow: 1;
}

.sidebar-item {
    margin-bottom: 4px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--navy-700);
    transition: all 0.2s ease;
    text-decoration: none;
}

.sidebar-link i {
    font-size: 18px;
}

.sidebar-link:hover {
    background: var(--navy-50);
    color: var(--primary);
}

.sidebar-link.active {
    background: var(--primary-light);
    color: var(--primary);
}

.dashboard-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--body-bg);
    overflow-x: hidden;
}

.dashboard-topbar {
    height: 72px;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 90;
}

.dashboard-main {
    padding: 28px;
    flex-grow: 1;
}

/* ==============================================================
   ALERTS
   ============================================================== */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: var(--success-light);
    border: 1px solid #A7F3D0;
    color: #065F46;
}

.alert-error, .alert-danger {
    background: var(--error-light);
    border: 1px solid #FECACA;
    color: #991B1B;
}

.alert-warning {
    background: var(--warning-light);
    border: 1px solid #FDE68A;
    color: #92400E;
}

.alert-info {
    background: var(--info-light);
    border: 1px solid #BFDBFE;
    color: #1E40AF;
}

/* ==============================================================
   WHATSAPP FLOATING BUTTON
   ============================================================== */
.whatsapp-floating {
    position: fixed;
    bottom: 28px;
    right: 28px;
    background: #25D366;
    color: #ffffff !important;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: var(--radius-full);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
    font-size: 14px;
    font-weight: 700;
    z-index: 999;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.whatsapp-floating:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 24px rgba(37, 211, 102, 0.5);
}

.whatsapp-floating i {
    font-size: 20px;
}

/* ==============================================================
   RESPONSIVENESS
   ============================================================== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-sidebar {
        display: none;
    }
    
    .dashboard-sidebar.show {
        display: flex;
        position: fixed;
        left: 0;
        top: 0;
        z-index: 1000;
        box-shadow: var(--shadow-lg);
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-links.show {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
    }
}

@media (max-width: 640px) {
    .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .dashboard-topbar {
        padding: 0 16px;
    }
    
    .dashboard-main {
        padding: 18px 16px;
    }
}