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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark: #1f2937;
    --dark-light: #374151;
    --gray: #6b7280;
    --light-gray: #f3f4f6;
    --white: #ffffff;
    --border: #e5e7eb;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--light-gray);
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Page Management */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* Navbar */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar.navbar-dark {
    background: var(--dark);
    color: var(--white);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.navbar-dark .nav-brand {
    color: var(--white);
}

.nav-brand i {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    color: var(--white);
    font-weight: 500;
    margin-right: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.navbar-dark .btn-outline {
    color: var(--white);
    border-color: var(--white);
}

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

.navbar-dark .btn-outline:hover {
    background: var(--white);
    color: var(--dark);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-success {
    background: var(--secondary-color);
    color: var(--white);
}

.btn-success:hover {
    background: #059669;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.hero .stat {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem 2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.hero .stat i {
    font-size: 2rem;
}

.hero .stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

.hero .stat span {
    display: block;
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: var(--white);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px var(--shadow-lg);
}

.feature-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

/* Auth Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.auth-container {
    width: 100%;
    max-width: 450px;
    padding: 2rem;
}

.auth-card {
    background: var(--white);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.auth-header h2 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--gray);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

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

/* Dashboard */
.dashboard {
    padding: 2rem 0;
    min-height: calc(100vh - 70px);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    font-size: 2rem;
    color: var(--dark);
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 2px 8px var(--shadow);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
}

.stat-icon.balance {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.stat-icon.earned {
    background: linear-gradient(135deg, #10b981, #059669);
}

.stat-icon.videos {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-icon.plan {
    background: linear-gradient(135deg, #ec4899, #db2777);
}

.stat-content {
    flex: 1;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

/* Dashboard Content */
.dashboard-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

.main-content {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--dark);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border);
    background: var(--white);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* Videos Grid */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.video-card {
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px var(--shadow-lg);
    border-color: var(--primary-color);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 180px;
    background: var(--light-gray);
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.video-duration {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    background: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.video-content {
    padding: 1rem;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--gray);
}

.video-reward {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.video-reward i {
    color: var(--warning-color);
}

.video-lock {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.video-lock i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--shadow);
}

.sidebar-card h3 {
    font-size: 1.125rem;
    color: var(--dark);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.earning-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--light-gray);
    border-radius: 8px;
    margin-bottom: 0.75rem;
}

.earning-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--secondary-color), #059669);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.earning-details {
    flex: 1;
}

.earning-title {
    font-size: 0.875rem;
    color: var(--dark);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.earning-amount {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.no-data {
    text-align: center;
    color: var(--gray);
    padding: 2rem 0;
}

/* Plans Page */
.plans-container {
    padding: 2rem 0;
    min-height: calc(100vh - 70px);
}

.plans-header {
    text-align: center;
    margin-bottom: 3rem;
}

.plans-header h1 {
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.plans-header p {
    font-size: 1.125rem;
    color: var(--gray);
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.plan-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 16px var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
}

.plan-card.featured {
    transform: scale(1.05);
    border: 2px solid var(--primary-color);
}

.plan-card.featured::before {
    height: 6px;
}

.plan-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.plan-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.plan-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.plan-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.plan-price small {
    font-size: 1rem;
    color: var(--gray);
}

.plan-duration {
    color: var(--gray);
    font-size: 0.875rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.plan-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--dark);
}

.plan-features li i {
    color: var(--secondary-color);
    font-size: 1.125rem;
}

.plan-footer {
    text-align: center;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.video-modal-content {
    max-width: 900px;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
    color: var(--dark);
}

.close-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--light-gray);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--dark);
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: var(--danger-color);
    color: var(--white);
}

.modal-body {
    padding: 1.5rem;
}

/* Video Player */
.video-player-container {
    position: relative;
    width: 100%;
    background: var(--dark);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.video-player-container video {
    width: 100%;
    display: block;
}

.video-info {
    margin-top: 1rem;
}

.video-info p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.video-info .video-reward {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.video-info .video-reward i {
    font-size: 1.5rem;
    color: var(--warning-color);
}

.video-progress-info {
    margin-top: 1rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--light-gray);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--gray);
    text-align: center;
}

/* Payment Modal */
.payment-modal-content {
    max-width: 500px;
}

.payment-summary {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.payment-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
}

.payment-item.total {
    border-top: 2px solid var(--border);
    margin-top: 0.5rem;
    padding-top: 1rem;
    font-size: 1.25rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .dashboard-content {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .filter-buttons {
        flex-wrap: wrap;
    }
    
    .videos-grid {
        grid-template-columns: 1fr;
    }
    
    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .plan-card.featured {
        transform: scale(1);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

/* Loading State */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--gray);
}

.loading i {
    font-size: 3rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Success/Error Messages */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
}

.alert i {
    font-size: 1.25rem;
}