/* ========================================
   VIDEO AFFILIATE AI GENERATOR
   Premium Dark Mode Design System
   ======================================== */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
    /* Core Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(18, 18, 30, 0.7);
    --bg-card-hover: rgba(25, 25, 42, 0.8);
    --bg-input: rgba(15, 15, 25, 0.8);

    /* Accent Gradients */
    --accent-primary: #8B5CF6;
    --accent-secondary: #06B6D4;
    --accent-tertiary: #EC4899;
    --gradient-primary: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
    --gradient-accent: linear-gradient(135deg, #EC4899 0%, #8B5CF6 50%, #06B6D4 100%);
    --gradient-warm: linear-gradient(135deg, #F59E0B 0%, #EC4899 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #06B6D4 100%);

    /* Text Colors */
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --text-accent: #A78BFA;

    /* Border & Surface */
    --border-subtle: rgba(148, 163, 184, 0.08);
    --border-active: rgba(139, 92, 246, 0.4);
    --glow-primary: 0 0 30px rgba(139, 92, 246, 0.15);
    --glow-accent: 0 0 40px rgba(6, 182, 212, 0.12);

    /* Spacing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- Background Particles --- */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-particles::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
    animation: floatOrb 20s ease-in-out infinite;
}

.bg-particles::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.05) 0%, transparent 70%);
    animation: floatOrb 25s ease-in-out infinite reverse;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -30px) scale(1.1); }
    50% { transform: translate(-20px, 40px) scale(0.95); }
    75% { transform: translate(30px, 20px) scale(1.05); }
}

/* --- App Container --- */
.app-container {
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 20px 48px;
    min-height: 100vh;
}

/* --- Header --- */
.app-header {
    position: relative;
    text-align: center;
    padding: 40px 0 32px;
    margin-bottom: 32px;
}

.header-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 200px;
    background: radial-gradient(ellipse, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.header-content {
    position: relative;
}

.logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 12px;
}

.logo-icon {
    display: flex;
    align-items: center;
    animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.4)); }
    50% { filter: drop-shadow(0 0 16px rgba(139, 92, 246, 0.7)); }
}

.app-title {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.title-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 400;
    max-width: 500px;
    margin: 0 auto;
}

/* --- Glass Card --- */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
    border-color: rgba(139, 92, 246, 0.15);
    box-shadow: var(--glow-primary);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    color: white;
}

.upload-icon { background: linear-gradient(135deg, #8B5CF6, #7C3AED); }
.watermark-icon { background: linear-gradient(135deg, #F59E0B, #D97706); }
.voice-icon { background: linear-gradient(135deg, #EC4899, #DB2777); }
.video-icon { background: linear-gradient(135deg, #10B981, #059669); }
.caption-icon { background: linear-gradient(135deg, #06B6D4, #0891B2); }

.card-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* --- Drop Zone --- */
.drop-zone {
    position: relative;
    border: 2px dashed rgba(148, 163, 184, 0.15);
    border-radius: var(--radius-md);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.drop-zone:hover {
    border-color: rgba(139, 92, 246, 0.35);
}

.drop-zone:hover::before {
    opacity: 1;
}

.drop-zone.drag-over {
    border-color: var(--accent-primary);
    border-style: solid;
    background: rgba(139, 92, 246, 0.08);
    box-shadow: inset 0 0 30px rgba(139, 92, 246, 0.1), 0 0 30px rgba(139, 92, 246, 0.1);
    transform: scale(1.01);
}

.drop-zone.drag-over::before {
    opacity: 1;
}

.drop-zone.has-file {
    border-color: rgba(16, 185, 129, 0.3);
    border-style: solid;
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.drop-icon {
    color: var(--text-muted);
    margin-bottom: 4px;
    transition: color var(--transition-base), transform var(--transition-base);
}

.drop-zone:hover .drop-icon {
    color: var(--accent-primary);
    transform: translateY(-4px);
}

.drop-zone.drag-over .drop-icon {
    color: var(--accent-primary);
    transform: translateY(-8px) scale(1.1);
    animation: bounceUp 0.6s ease-in-out infinite alternate;
}

@keyframes bounceUp {
    from { transform: translateY(-8px) scale(1.1); }
    to { transform: translateY(-14px) scale(1.15); }
}

.drop-text {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.drop-subtext {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.drop-specs {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.spec-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-accent);
    letter-spacing: 0.02em;
}

/* --- Video Preview in Drop Zone --- */
.drop-zone-preview {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
}

.drop-zone-preview video {
    max-width: 100%;
    max-height: 180px;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

.preview-info {
    margin-top: 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
    align-items: center;
}

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

.btn-remove {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.15);
    color: #EF4444;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-remove:hover {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.5);
    transform: scale(1.1);
}

/* --- Settings Row --- */
.settings-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 16px;
}

@media (max-width: 700px) {
    .settings-row {
        grid-template-columns: 1fr;
    }
}

.settings-card {
    display: flex;
    flex-direction: column;
}

/* --- Watermark Toggle --- */
.watermark-toggle {
    display: flex;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    padding: 3px;
    margin-bottom: 16px;
    border: 1px solid var(--border-subtle);
}

.toggle-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.toggle-btn.active {
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.15);
}

.toggle-btn:hover:not(.active) {
    color: var(--text-secondary);
    background: rgba(148, 163, 184, 0.05);
}

/* --- Input Styles --- */
.input-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.text-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: inherit;
    outline: none;
    transition: all var(--transition-fast);
}

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

.text-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.input-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* --- Logo Upload Zone --- */
.logo-upload-zone {
    border: 2px dashed rgba(148, 163, 184, 0.12);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-upload-zone:hover {
    border-color: rgba(245, 158, 11, 0.3);
    background: rgba(245, 158, 11, 0.03);
}

.logo-upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.logo-preview {
    position: relative;
    display: inline-flex;
}

.logo-preview img {
    max-height: 48px;
    max-width: 120px;
    object-fit: contain;
    border-radius: 4px;
}

.btn-remove-sm {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: none;
    background: #EF4444;
    color: white;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.btn-remove-sm:hover {
    transform: scale(1.15);
}

/* --- Select Input --- */
.select-wrapper {
    position: relative;
    margin-bottom: 16px;
}

.select-input {
    width: 100%;
    padding: 12px 40px 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: inherit;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.select-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.select-arrow {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* --- Voice Preview Cards --- */
.voice-preview-cards {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.voice-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.voice-card:hover {
    border-color: rgba(236, 72, 153, 0.2);
    background: rgba(236, 72, 153, 0.03);
}

.voice-card.active {
    border-color: rgba(236, 72, 153, 0.35);
    background: rgba(236, 72, 153, 0.08);
}

.voice-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.voice-avatar.female { background: linear-gradient(135deg, rgba(236, 72, 153, 0.2), rgba(139, 92, 246, 0.2)); }
.voice-avatar.male { background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(139, 92, 246, 0.2)); }

.voice-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.voice-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.voice-desc {
    font-size: 0.73rem;
    color: var(--text-muted);
}

.voice-check {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: white;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition-fast);
}

.voice-card.active .voice-check {
    opacity: 1;
    transform: scale(1);
}

/* --- Generate Button --- */
.generate-section {
    margin-top: 24px;
    display: flex;
    justify-content: center;
}

.btn-generate {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 480px;
    padding: 16px 32px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: white;
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
    letter-spacing: 0.01em;
}

.btn-generate::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn-generate:hover:not(:disabled)::before {
    opacity: 1;
}

.btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(139, 92, 246, 0.4);
}

.btn-generate:active:not(:disabled) {
    transform: translateY(0);
}

.btn-generate:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-generate.processing {
    background: var(--gradient-accent);
    cursor: wait;
}

.btn-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-loading {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* --- Spinner --- */
.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* --- Progress Panel --- */
.progress-panel {
    margin-top: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(12px);
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.progress-header h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.progress-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.progress-step {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 2px;
}

.step-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--text-muted);
    background: transparent;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.step-line {
    width: 2px;
    height: 28px;
    background: var(--border-subtle);
    margin: 4px 0;
    transition: background var(--transition-base);
}

.step-content {
    display: flex;
    flex-direction: column;
    padding-bottom: 16px;
    min-width: 0;
}

.step-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.step-status {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Step States */
.progress-step.active .step-dot {
    border-color: var(--accent-primary);
    background: var(--accent-primary);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
    animation: dotPulse 1.5s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { box-shadow: 0 0 6px rgba(139, 92, 246, 0.3); }
    50% { box-shadow: 0 0 14px rgba(139, 92, 246, 0.6); }
}

.progress-step.active .step-line {
    background: linear-gradient(to bottom, var(--accent-primary), var(--border-subtle));
}

.progress-step.active .step-status {
    color: var(--accent-primary);
}

.progress-step.done .step-dot {
    border-color: #10B981;
    background: #10B981;
    box-shadow: none;
    animation: none;
}

.progress-step.done .step-line {
    background: #10B981;
}

.progress-step.done .step-status {
    color: #10B981;
}

.progress-step.error .step-dot {
    border-color: #EF4444;
    background: #EF4444;
    animation: none;
}

.progress-step.error .step-status {
    color: #EF4444;
}

/* --- Progress Bar --- */
.progress-bar-container {
    margin-top: 16px;
    height: 4px;
    background: rgba(148, 163, 184, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width 0.5s ease-out;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* --- Output Section --- */
.output-section {
    margin-top: 40px;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.divider-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
}

.divider-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.output-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 700px) {
    .output-grid {
        grid-template-columns: 1fr;
    }
}

.output-card {
    display: flex;
    flex-direction: column;
}

/* --- Video Player --- */
.video-player-wrapper {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #000;
    margin-bottom: 14px;
    aspect-ratio: 9 / 16;
    max-height: 420px;
}

.output-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* --- Download Button --- */
.btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--gradient-success);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.25);
}

.btn-download:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

/* --- Caption Textarea --- */
.caption-textarea {
    flex: 1;
    width: 100%;
    min-height: 280px;
    padding: 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    line-height: 1.7;
    resize: vertical;
    outline: none;
    margin-bottom: 14px;
    transition: border-color var(--transition-fast);
}

.caption-textarea:focus {
    border-color: rgba(6, 182, 212, 0.3);
}

/* --- Copy Button --- */
.btn-copy {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.25);
    border-radius: var(--radius-sm);
    color: var(--accent-secondary);
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-copy:hover {
    background: rgba(6, 182, 212, 0.2);
    border-color: rgba(6, 182, 212, 0.4);
    transform: translateY(-1px);
}

.btn-copy.copied {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10B981;
}

/* --- Footer --- */
.app-footer {
    text-align: center;
    padding: 32px 0 0;
    color: var(--text-muted);
    font-size: 0.78rem;
}

.app-footer strong {
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- Error Toast --- */
.error-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(239, 68, 68, 0.95);
    color: white;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(239, 68, 68, 0.3);
    z-index: 100000;
    opacity: 0;
    transition: all 0.3s ease-out;
    max-width: 90%;
    text-align: center;
    backdrop-filter: blur(8px);
}

.error-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.25);
}

/* --- Selection --- */
::selection {
    background: rgba(139, 92, 246, 0.3);
    color: white;
}


/* ========================================
   Sidebar Layout & Multi-Page Support
   ======================================== */
.app-layout {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.app-sidebar {
    width: 280px;
    background: rgba(10, 10, 15, 0.92);
    border-right: 1px solid var(--border-subtle);
    padding: 32px 20px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-shrink: 0;
    transition: transform var(--transition-slow);
}

.app-workspace {
    flex: 1;
    min-width: 0;
    height: 100vh;
    overflow-y: auto;
    position: relative;
}

.page-container {
    display: none;
    width: 100%;
}

.page-container.active {
    display: block;
    animation: fadeContent 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeContent {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Sidebar Logo & Header --- */
.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo-icon-sm {
    display: flex;
    align-items: center;
}

.sidebar-brand {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

/* --- Sidebar Profile --- */
.user-profile-sidebar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(6, 182, 212, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-email-badge {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.btn-logout {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.btn-logout:hover {
    color: #EF4444;
    background: rgba(239, 68, 68, 0.1);
}

/* --- Sidebar Menu --- */
.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.menu-section-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    padding: 8px 12px 4px;
}

.menu-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
}

.menu-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.menu-item.active {
    color: white;
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.2);
    box-shadow: inset 0 0 12px rgba(139, 92, 246, 0.08);
    position: relative;
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 18px;
    background: var(--gradient-primary);
    border-radius: 0 4px 4px 0;
}

.menu-icon {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- Comparison UI --- */
.comparison-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, rgba(6, 182, 212, 0.06) 100%);
    border: 3px solid rgba(16, 185, 129, 0.25);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.1);
    animation: floatCircle 4s ease-in-out infinite;
}

@keyframes floatCircle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.comparison-save-pct {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    color: #10B981;
    line-height: 1;
}

.comparison-save-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-top: 4px;
}

.comparison-stats {
    width: 100%;
    max-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.88rem;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 820px) {
    .app-layout {
        flex-direction: column;
    }
    
    .app-sidebar {
        width: 100%;
        height: auto;
        padding: 16px 20px;
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    
    .sidebar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }
    
    .sidebar-logo {
        margin-bottom: 0;
    }
    
    .user-profile-sidebar {
        margin-bottom: 0;
        padding: 6px 12px;
    }
    
    .sidebar-menu {
        flex-direction: row;
        gap: 8px;
        width: 100%;
        justify-content: center;
    }
    
    .menu-section-label {
        display: none;
    }
    
    .menu-item {
        padding: 10px 14px;
        font-size: 0.82rem;
        width: auto;
        flex: 1;
        justify-content: center;
    }
    
    .menu-item.active::before {
        display: none;
    }
    
    .app-workspace {
        height: auto;
        overflow-y: visible;
    }
}

/* =============================================================================
   🎮 GENERATE VIDEO MASSAL (BULK GENERATOR) STYLES
   ============================================================================= */

.bulk-dashboard {
    background: rgba(15, 15, 25, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    box-shadow: var(--shadow-md);
    animation: authFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.queue-grid-container {
    max-height: 800px;
    overflow-y: auto;
    padding-right: 6px;
}

/* Custom scrollbar for queue */
.queue-grid-container::-webkit-scrollbar {
    width: 6px;
}
.queue-grid-container::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.02);
    border-radius: 4px;
}
.queue-grid-container::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}
.queue-grid-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.2);
}

.queue-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 16px;
    margin-bottom: 30px;
}

.queue-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: rgba(20, 20, 30, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 16px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.queue-card:hover {
    transform: translateY(-2px);
    background: rgba(25, 25, 40, 0.65);
    border-color: rgba(255, 255, 255, 0.12);
}

/* Status colors and glow */
.queue-card.status-pending {
    border-left: 4px solid var(--text-secondary);
}

.queue-card.status-processing {
    border-left: 4px solid #06B6D4;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.15);
    border-color: rgba(6, 182, 212, 0.3) rgba(255,255,255,0.06) rgba(255,255,255,0.06) #06B6D4;
}

.queue-card.status-success {
    border-left: 4px solid #10B981;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.3) rgba(255,255,255,0.06) rgba(255,255,255,0.06) #10B981;
}

.queue-card.status-error {
    border-left: 4px solid #EF4444;
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3) rgba(255,255,255,0.06) rgba(255,255,255,0.06) #EF4444;
}

/* Card layout components */
.queue-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.queue-card-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.queue-card-size {
    font-size: 0.72rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
    flex-shrink: 0;
}

.queue-card-status-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
    text-transform: uppercase;
}

.queue-card-status-badge.pending {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
}

.queue-card-status-badge.processing {
    background: rgba(6, 182, 212, 0.15);
    color: #22D3EE;
    animation: pulseGlow 1.5s infinite alternate;
}

.queue-card-status-badge.success {
    background: rgba(16, 185, 129, 0.15);
    color: #34D399;
}

.queue-card-status-badge.error {
    background: rgba(239, 68, 68, 0.15);
    color: #F87171;
}

.queue-card-progress {
    margin: 12px 0;
}

.queue-card-progress-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.queue-card-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #8B5CF6, #06B6D4);
    border-radius: 10px;
    transition: width 0.3s ease;
}

.queue-card.status-error .queue-card-progress-bar {
    background: #EF4444;
}

.queue-card-progress-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 6px;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Card Output preview area */
.queue-card-output {
    margin-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 12px;
}

.queue-card-video-wrapper {
    width: 100%;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #000;
    margin-bottom: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.queue-card-video {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    display: block;
    object-fit: contain;
}

.queue-card-btn-container {
    display: flex;
    gap: 8px;
}

.queue-card-btn-download {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px;
    background: linear-gradient(135deg, #10B981, #059669);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.queue-card-btn-download:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

/* Card actions: remove and retry */
.queue-card-remove {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    transition: color 0.2s;
    line-height: 1;
    z-index: 5;
}

.queue-card-remove:hover {
    color: #EF4444;
}

.btn-retry {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 12px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #F87171;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
}

.btn-retry:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #EF4444;
    color: white;
    transform: translateY(-1px);
}

.btn-retry svg {
    transition: transform 0.4s ease;
}

.btn-retry:hover svg {
    transform: rotate(180deg);
}

/* Animation keyframes */
@keyframes pulseGlow {
    from {
        opacity: 0.8;
    }
    to {
        opacity: 1;
        box-shadow: 0 0 8px rgba(6, 182, 212, 0.4);
    }
}

/* Mobile adjustments for massal tab */
@media (max-width: 820px) {
    .queue-grid {
        grid-template-columns: 1fr !important;
    }
    
    .bulk-stats {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 12px;
    }
    
    .stats-pills {
        width: 100%;
        display: flex;
        justify-content: flex-start;
    }
    
    .dashboard-actions {
        width: 100% !important;
        margin-top: 4px !important;
    }
    
    .dashboard-actions button {
        flex: 1;
        text-align: center;
    }
}