/**
 * Video Upload System - Modern UI Design
 * Geist Font ile Next.js tarzı tasarım
 */

/* Geist Font Import */
@import url('https://fonts.googleapis.com/css2?family=Geist:wght@100;200;300;400;500;600;700;800;900&display=swap');

:root {
    /* Color Palette - Modern Dark Theme */
    --color-background: #000000;
    --color-foreground: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-400: #a1a1aa;
    --color-gray-500: #71717a;
    --color-gray-600: #52525b;
    --color-gray-700: #3f3f46;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;
    --color-gray-950: #09090b;
    
    /* Accent Colors */
    --color-primary: #0070f3;
    --color-primary-hover: #0060df;
    --color-success: #0dcd0d;
    --color-warning: #f5a623;
    --color-error: #ff0000;
    --color-info: #7928ca;
    
    /* Border and Shadow */
    --border-radius: 8px;
    --border-color: #333333;
    --shadow-small: 0 2px 8px rgba(0, 0, 0, 0.12);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.16);
    --shadow-large: 0 8px 32px rgba(0, 0, 0, 0.24);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.35s ease;
}

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

body {
    font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--color-background);
    color: var(--color-foreground);
    line-height: 1.6;
    font-size: 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-small {
    max-width: 480px;
}

.container-medium {
    max-width: 720px;
}

/* Header */
header {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 16px 0;
}

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

.logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-foreground);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo:hover {
    opacity: 0.8;
}

/* Navigation */
nav ul {
    display: flex;
    list-style: none;
    gap: 24px;
    align-items: center;
}

nav a {
    color: var(--color-gray-400);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition-fast);
}

nav a:hover,
nav a.active {
    color: var(--color-foreground);
}

/* Main Content */
main {
    flex: 1;
    padding: 48px 0;
}

/* Cards */
.card {
    background: var(--color-gray-950);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-small);
    transition: border-color var(--transition-normal);
}

.card:hover {
    border-color: var(--color-gray-700);
}

.card-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.card-description {
    color: var(--color-gray-400);
    font-size: 14px;
    margin-bottom: 24px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-gray-300);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="file"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-gray-900);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--color-foreground);
    font-family: 'Geist', sans-serif;
    font-size: 14px;
    transition: all var(--transition-fast);
    outline: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
textarea:focus,
select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.1);
}

input[type="file"] {
    padding: 10px;
    cursor: pointer;
}

/* Buttons */
button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: 'Geist', sans-serif;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-gray-800);
    color: var(--color-foreground);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--color-gray-700);
    border-color: var(--color-gray-600);
}

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

.btn-danger:hover {
    background: #cc0000;
    transform: translateY(-1px);
}

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

.btn-success:hover {
    background: #0bb80b;
}

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 8px 16px;
    font-size: 13px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-size: 14px;
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: rgba(13, 205, 13, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

.alert-error {
    background: rgba(255, 0, 0, 0.1);
    border-color: var(--color-error);
    color: var(--color-error);
}

.alert-warning {
    background: rgba(245, 166, 35, 0.1);
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.alert-info {
    background: rgba(0, 112, 243, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--color-gray-950);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--color-gray-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.stat-label {
    font-size: 13px;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    font-weight: 500;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-foreground);
    letter-spacing: -1px;
}


/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-gray-950);
    border-radius: var(--border-radius);
    overflow: hidden;
}

thead {
    background: var(--color-gray-900);
}

th {
    padding: 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-gray-400);
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

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

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: var(--color-gray-900);
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-800);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 48px 24px;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    background: var(--color-gray-950);
}

.upload-area:hover,
.upload-area.dragging {
    border-color: var(--color-primary);
    background: rgba(0, 112, 243, 0.05);
}


.upload-text {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 14px;
    color: var(--color-gray-400);
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-foreground);
    animation: spin 0.6s linear infinite;
}

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

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 12px;
    background: var(--color-gray-800);
    color: var(--color-foreground);
}

.badge-success {
    background: rgba(13, 205, 13, 0.2);
    color: var(--color-success);
}

.badge-error {
    background: rgba(255, 0, 0, 0.2);
    color: var(--color-error);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    text-align: center;
    color: var(--color-gray-400);
    font-size: 14px;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    main {
        padding: 32px 0;
    }
    
    .card {
        padding: 24px 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        gap: 16px;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 12px 8px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-normal);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-950);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-800);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-700);
}