/* KatoAI - Black & Orange Theme */

:root {
    --primary-orange: #FF6B00;
    --primary-orange-hover: #FF8533;
    --primary-orange-dark: #CC5500;
    --bg-black: #0A0A0A;
    --bg-dark: #121212;
    --bg-card: #1A1A1A;
    --bg-card-hover: #222222;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --text-muted: #666666;
    --border-color: #2A2A2A;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --gradient-orange: linear-gradient(135deg, #FF6B00 0%, #FF8533 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-black);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navbar */
.navbar {
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-orange);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.nav-link.active {
    color: var(--primary-orange);
    background-color: rgba(255, 107, 0, 0.1);
}

.settings-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.settings-btn:hover {
    background-color: var(--bg-card);
    border-color: var(--primary-orange);
    color: var(--primary-orange);
}

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 3rem 0 2rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Mode Selector */
.mode-selector {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.mode-btn {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}

.mode-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-orange);
    color: var(--text-primary);
}

.mode-btn.active {
    background: var(--gradient-orange);
    border-color: var(--primary-orange);
    color: var(--text-primary);
}

/* Form Card */
.generation-form {
    max-width: 700px;
    margin: 2rem auto;
}

.form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
}

.form-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

textarea,
.select-input,
.input-field {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

textarea:focus,
.select-input:focus,
.input-field:focus {
    outline: none;
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.1);
}

textarea::placeholder,
.input-field::placeholder {
    color: var(--text-muted);
}

/* Slider */
.slider-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.slider {
    flex: 1;
    height: 6px;
    background: var(--bg-dark);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--gradient-orange);
    border-radius: 50%;
    cursor: pointer;
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--gradient-orange);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.slider-value {
    min-width: 30px;
    text-align: center;
    font-weight: 700;
    color: var(--primary-orange);
    font-size: 1.125rem;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--primary-orange);
    background: rgba(255, 107, 0, 0.05);
}

.upload-placeholder svg {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.upload-placeholder p {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.upload-placeholder span {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.upload-preview {
    position: relative;
}

.upload-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 0.5rem;
}

.remove-image {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--error);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.remove-image:hover {
    transform: scale(1.1);
}

/* Buttons */
.btn-primary {
    width: 100%;
    background: var(--gradient-orange);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 0, 0.3);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-card-hover);
    border-color: var(--primary-orange);
}

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

.btn-danger {
    background: var(--error);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-danger:hover:not(:disabled) {
    background: #DC2626;
}

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

/* Progress Tab */
.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.progress-header h2 {
    font-size: 2rem;
    font-weight: 700;
}

.progress-actions {
    display: flex;
    gap: 0.75rem;
}

.progress-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.progress-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.progress-card:hover {
    border-color: var(--primary-orange);
}

.progress-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.progress-card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.progress-status {
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-weight: 600;
}

.progress-status.processing {
    background: rgba(249, 115, 22, 0.1);
    color: var(--primary-orange);
}

.progress-status.completed {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.progress-status.failed {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.progress-bar-container {
    background: var(--bg-dark);
    border-radius: 0.5rem;
    height: 8px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-orange);
    border-radius: 0.5rem;
    transition: width 0.3s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* History Tab */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.history-header h2 {
    font-size: 2rem;
    font-weight: 700;
}

.history-filters {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-orange);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-card:hover {
    border-color: var(--primary-orange);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(255, 107, 0, 0.2);
}

.video-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--bg-dark);
}

.video-card-content {
    padding: 1rem;
}

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

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state svg {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 900px;
}

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

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

.close-modal:hover {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-orange);
}

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

    .nav-links {
        width: 100%;
        justify-content: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .mode-selector {
        flex-direction: column;
    }

    .mode-btn {
        width: 100%;
    }

    .history-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .history-filters {
        width: 100%;
        flex-wrap: wrap;
    }

    .filter-btn {
        flex: 1;
    }

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

    .progress-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}