/* ==========================================
   Modern POC Styles - DRM Video Platform
   ========================================== */

/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --dark-bg: #1e293b;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* ==========================================
   Navigation Bar
   ========================================== */
.navbar {
    background: var(--card-bg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    gap: 1rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover {
    background: #f1f5f9;
    color: var(--primary-color);
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
}

/* ==========================================
   Container & Layout
   ========================================== */
.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.section {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.section-header h2 i {
    color: var(--primary-color);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ==========================================
   Upload Card
   ========================================== */
.upload-card {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.form-group label i {
    color: var(--primary-color);
}

.form-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

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

/* File Upload */
.file-upload-wrapper {
    position: relative;
}

.file-input {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    z-index: 2;
}

.file-upload-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    background: #f8fafc;
    transition: var(--transition);
    cursor: pointer;
}

.file-upload-display:hover {
    border-color: var(--primary-color);
    background: #f1f5f9;
}

.file-upload-display i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.file-name {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-primary:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: #f8fafc;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ==========================================
   Upload Progress & Status
   ========================================== */
.upload-progress {
    margin-top: 1.5rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e2e8f0;
    border-radius: 999px;
    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;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { background-position: -100% 0; }
    100% { background-position: 100% 0; }
}

.progress-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--error-color);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--primary-color);
}

/* ==========================================
   Loading State
   ========================================== */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e2e8f0;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.loading-state p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ==========================================
   Video Grid
   ========================================== */
.video-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.video-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.video-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.video-thumbnail i {
    font-size: 4rem;
    color: white;
    opacity: 0.8;
}

.play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.video-card:hover .play-overlay {
    opacity: 1;
}

.play-icon {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.video-info {
    padding: 1.25rem;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.drm-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    background: #dbeafe;
    color: #1e40af;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ==========================================
   Empty State
   ========================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.empty-state i {
    font-size: 5rem;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: 1.5rem;
}

.empty-state h3 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ==========================================
   Video Player
   ========================================== */
.player-container {
    max-width: 1200px;
    margin: 0 auto;
}

.player-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.player-header h3 {
    font-size: 1.75rem;
    color: var(--text-primary);
}

.player-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

#videoPlayer {
    width: 100%;
    height: 100%;
}

.player-info {
    margin-top: 1.5rem;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: #f1f5f9;
    border-radius: var(--radius);
}

.info-card i {
    font-size: 2rem;
    color: var(--success-color);
}

.info-card h4 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--card-bg);
    margin-top: 4rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.footer-section h4 i {
    color: var(--primary-color);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   Toast Notifications
   ========================================== */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    min-width: 300px;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--error-color);
}

.toast-info {
    border-left: 4px solid var(--primary-color);
}

.toast i {
    font-size: 1.5rem;
}

.toast-success i {
    color: var(--success-color);
}

.toast-error i {
    color: var(--error-color);
}

.toast-info i {
    color: var(--primary-color);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .section {
        padding: 1.5rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .video-cards {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .toast-container {
        right: 10px;
        left: 10px;
    }

    .toast {
        min-width: auto;
    }
}