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

:root {
    --primary-color: #4a90e2;
    --primary-dark: #357abd;
    --secondary-color: #f39c12;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --dark-bg: #2c3e50;
    --light-bg: #ecf0f1;
    --white: #ffffff;
    --text-dark: #333333;
    --text-light: #7f8c8d;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Login Page Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow-hover);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 10px;
}

.login-header p {
    color: var(--text-light);
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Button Styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    width: 100%;
}

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

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

.btn-success:hover {
    background: #229954;
}

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

.btn-danger:hover {
    background: #c0392b;
}

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

.btn-secondary:hover {
    background: #6c7a89;
}

/* Alert Styles */
.alert {
    padding: 12px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Dashboard Styles */
.dashboard {
    min-height: 100vh;
    background: var(--light-bg);
}

/* Header */
.header {
    background: var(--white);
    padding: 15px 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left h1 {
    color: var(--primary-color);
    font-size: 24px;
}

.header-left p {
    color: var(--text-light);
    font-size: 13px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    text-align: right;
}

.user-info .user-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

.user-info .user-role {
    font-size: 12px;
    color: var(--text-light);
    text-transform: capitalize;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Toolbar */
.toolbar {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.search-box {
    flex: 1;
    min-width: 250px;
}

.search-box input {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    justify-items: center;
}

.video-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    width: 100%;
    max-width: 200px;
    position: relative;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.video-card.selected {
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.video-select-wrapper {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 10;
}

.video-select-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.video-container {
    width: 100%;
    position: relative;
    background: #000;
    overflow: hidden;
    border-radius: 10px 10px 0 0;
}

.video-player {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 9 / 16;
    background: #000;
    object-fit: contain;
}

.video-info {
    padding: 12px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    gap: 8px;
}

.info-content {
    flex: 1;
    min-width: 0;
}

.info-content strong {
    font-size: 10px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 3px;
}

.info-text {
    font-size: 11px;
    color: var(--text-dark);
    margin: 0;
    line-height: 1.4;
    word-wrap: break-word;
    overflow-wrap: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.btn-copy {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
}

.btn-copy:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-copy:hover svg {
    fill: var(--white);
}

.btn-copy svg {
    fill: var(--text-light);
    transition: fill 0.2s;
}

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

.info-actions {
    display: flex;
    gap: 4px;
    align-items: center;
}

.btn-edit,
.btn-save,
.btn-cancel {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
}

.btn-edit:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-1px);
}

.btn-edit:hover svg {
    fill: var(--white);
}

.btn-edit svg {
    fill: var(--text-light);
    transition: fill 0.2s;
}

.btn-save:hover {
    background: var(--success-color);
    border-color: var(--success-color);
    transform: translateY(-1px);
}

.btn-save:hover svg {
    fill: var(--white);
}

.btn-save svg {
    fill: var(--success-color);
    transition: fill 0.2s;
}

.btn-cancel:hover {
    background: var(--danger-color);
    border-color: var(--danger-color);
    transform: translateY(-1px);
}

.btn-cancel:hover svg {
    fill: var(--white);
}

.btn-cancel svg {
    fill: var(--danger-color);
    transition: fill 0.2s;
}

.info-text.editing {
    background: #fffbcc;
    border: 1px solid var(--secondary-color);
    padding: 4px 6px;
    border-radius: 3px;
    outline: none;
    -webkit-line-clamp: unset;
    max-height: 150px;
    overflow-y: auto;
}

.info-text.editing:focus {
    border-color: var(--primary-color);
}

.video-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 10px;
}

.video-actions .btn {
    width: 100%;
    padding: 6px 10px;
    font-size: 11px;
}

/* Upload Form */
.upload-form {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    margin-bottom: 20px;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color);
    background: rgba(74, 144, 226, 0.05);
}

.upload-area svg {
    width: 50px;
    height: 50px;
    fill: var(--primary-color);
    margin-bottom: 15px;
}

.upload-area p {
    color: var(--text-light);
    font-size: 14px;
}

.file-info {
    background: var(--light-bg);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: var(--light-bg);
    border-radius: 15px;
    overflow: hidden;
    margin-top: 15px;
    display: none;
}

.progress-fill {
    height: 100%;
    background: var(--success-color);
    transition: width 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state svg {
    width: 80px;
    height: 80px;
    fill: var(--text-light);
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.empty-state p {
    font-size: 14px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.stat-card h3 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-card p {
    color: var(--text-light);
    font-size: 14px;
}

/* Responsive */
@media (min-width: 1400px) {
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 15px;
    }

    .video-card {
        max-width: none;
    }

    .user-info {
        text-align: center;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--light-bg);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

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

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