:root {
    --bg-base: #0a0a0f;
    --surface: #12121a;
    --surface-elevated: #1a1a2e;
    --primary: #6c63ff;
    --primary-hover: #7c74ff;
    --text-primary: #e8e8ed;
    --text-secondary: #8888a0;
    --success: #4ade80;
    --danger: #f87171;
    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(108, 99, 255, 0.5);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.5;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(108, 99, 255, 0.05), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(108, 99, 255, 0.05), transparent 25%);
    background-attachment: fixed;
}

/* Typography */
h1, h2, h3 { font-weight: 600; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 500;
    font-family: var(--font-main);
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-size: 0.9rem;
}
.btn.primary {
    background-color: var(--primary);
    color: white;
}
.btn.primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(108, 99, 255, 0.3);
}
.btn.outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}
.btn.outline:hover {
    border-color: var(--text-secondary);
    background-color: rgba(255, 255, 255, 0.05);
}
.btn.danger {
    background-color: rgba(248, 113, 113, 0.1);
    color: var(--danger);
}
.btn.danger:hover {
    background-color: rgba(248, 113, 113, 0.2);
}
.btn.small {
    padding: 6px 12px;
    font-size: 0.8rem;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.view {
    display: none;
}
.view.active {
    display: block;
}
#login-view.active {
    display: flex;
}

/* Login View */
#login-view {
    min-height: 100vh;
    align-items: center;
    justify-content: center;
}
.login-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(12px);
}
.login-card h1 { margin-bottom: 4px; }
.login-card .subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
}
.input-group { margin-bottom: 16px; }
.input-group input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    background-color: var(--bg-base);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: var(--font-main);
    transition: border-color 0.2s;
}
.input-group input:focus {
    outline: none;
    border-color: var(--primary);
}
.login-card button { width: 100%; margin-top: 8px; }

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background-color: rgba(18, 18, 26, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.logo {
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: -0.5px;
}
.header-stats {
    display: flex;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.header-stats span {
    background-color: var(--surface-elevated);
    padding: 4px 10px;
    border-radius: 6px;
}

/* Upload Zone */
.upload-section { margin: 40px 0; }
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    background-color: rgba(18, 18, 26, 0.5);
    transition: all 0.3s ease;
}
.upload-zone:hover, .upload-zone.drag-over {
    border-color: var(--primary);
    background-color: rgba(108, 99, 255, 0.05);
}
.upload-zone.drag-over {
    transform: scale(1.01);
}
.upload-content {
    color: var(--text-secondary);
    pointer-events: none;
}
.upload-content svg {
    color: var(--primary);
    margin-bottom: 16px;
}
.upload-content h3 {
    color: var(--text-primary);
    margin-bottom: 8px;
}

/* Progress Bar */
.progress-container {
    margin-top: 20px;
    background-color: var(--surface);
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
}
.progress-container.hidden { display: none; }
.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
}
.progress-bar-bg {
    height: 8px;
    background-color: var(--bg-base);
    border-radius: 4px;
    overflow: hidden;
}
.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), #9d94ff);
    transition: width 0.2s ease;
}

/* Video Grid */
.videos-section h2 { margin-bottom: 24px; font-weight: 500;}
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    padding-bottom: 60px;
}
.video-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}
.video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
    border-color: var(--border-hover);
}
.video-thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background-color: #000;
    cursor: pointer;
}
.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.duration-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background-color: rgba(0,0,0,0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}
.play-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.2s;
}
.video-thumbnail:hover .play-overlay { opacity: 1; }
.play-overlay svg {
    width: 48px; height: 48px;
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}
.video-info { padding: 16px; }
.video-title {
    font-weight: 500;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.video-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
}
.video-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.video-actions .btn { font-size: 0.8rem; padding: 8px; }
.btn-copy-direct { grid-column: span 2; background-color: var(--surface-elevated); }
.btn-copy-direct:hover { background-color: var(--primary); color: white; border-color: var(--primary); }
.btn-delete { color: var(--text-secondary); }
.btn-delete:hover { color: var(--danger); border-color: rgba(248, 113, 113, 0.3); }

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    background-color: var(--surface-elevated);
    border-left: 4px solid var(--primary);
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    color: var(--text-primary);
    transform: translateX(120%);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.toast.show { transform: translateX(0); }
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }

/* Modal */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}
.modal.active { display: flex; }
.modal-backdrop {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(8px);
}
.modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    background-color: var(--surface);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}
.close-modal {
    position: absolute;
    top: 10px; right: 10px;
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 32px; height: 32px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}
.close-modal:hover { background: rgba(0,0,0,0.8); }
.modal-video-container {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
}
#preview-player {
    width: 100%;
    height: 100%;
}
.modal-info { padding: 20px; }

/* Responsive */
@media (max-width: 768px) {
    .video-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
    .header-stats { display: none; }
}