/* ============================================
   LIFELIKE VOICES - PREMIUM TTS - MODERN DESIGN
   ============================================ */

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    
    /* Light Theme Colors (for dark mode toggle) */
    --light-bg-primary: #ffffff;
    --light-bg-secondary: #f5f5f5;
    --light-text-primary: #1a1a24;
    --light-text-secondary: rgba(26, 26, 36, 0.7);
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-secondary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    --gradient-glow: radial-gradient(circle at center, rgba(99, 102, 241, 0.3), transparent 70%);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* Accent Colors */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

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

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* High contrast mode */
body.high-contrast {
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --glass-bg: rgba(0, 0, 0, 0.8);
    --glass-border: rgba(255, 255, 255, 0.3);
}

body.high-contrast .glass-card {
    border: 2px solid var(--text-primary);
}

/* Skip to main content */
#skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-primary);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 10000;
}

#skip-to-main:focus {
    top: 0;
}

/* Animated Background Gradient */
.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.15;
    z-index: -1;
    animation: gradientShift 15s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Glass Card Effect */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
    transform: translateY(-2px);
}

/* Header */
header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.logo-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-primary);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
}

h1 {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.subtitle-highlight {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    font-size: 1.15rem;
    display: inline-block;
    position: relative;
    text-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.subtitle-from {
    background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 500;
    font-size: 1.05rem;
    margin: 0 0.25rem;
    letter-spacing: 0.01em;
    display: inline-block;
    filter: drop-shadow(0 0 6px rgba(168, 85, 247, 0.4));
}

.subtitle-text {
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    font-size: 1.15rem;
    display: inline-block;
    position: relative;
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.4));
}

/* Main Layout */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    
    .history-sidebar {
        order: -1;
    }
}

/* Form Sections */
.form-section {
    margin-bottom: var(--spacing-md);
}

.section-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-label .icon {
    width: 18px;
    height: 18px;
    color: var(--accent-primary);
}

/* Translation Controls */
.translation-controls {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: var(--spacing-sm);
    align-items: end;
}

@media (max-width: 640px) {
    .translation-controls {
        grid-template-columns: 1fr;
    }
}

/* Translation Results */
.translation-results {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    animation: fadeIn 0.3s ease-out;
}

.translation-results textarea {
    font-family: inherit;
    resize: vertical;
}

.translation-results textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* Voice Controls */
.voice-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

@media (max-width: 640px) {
    .voice-controls {
        grid-template-columns: 1fr;
    }
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
}

.control-group > label.control-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.control-group .control-label-row {
    margin-bottom: 0.5rem;
}

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

/* Glass Inputs */
.glass-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.glass-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2), 0 0 20px rgba(99, 102, 241, 0.1);
}

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

/* Select Dropdown Styles - Garantir visibilidade do texto */
select.glass-input {
    color: var(--text-primary);
    cursor: pointer;
}

select.glass-input option {
    background: #ffffff;
    color: #000000;
    padding: 0.5rem;
}

select.glass-input option:hover,
select.glass-input option:focus,
select.glass-input option:checked {
    background: #6366f1;
    color: #ffffff;
}

textarea.glass-input {
    resize: none;
    min-height: 120px;
    line-height: 1.6;
}

/* Auto-resize Textarea */
.textarea-auto-resize {
    overflow: hidden;
}

/* Audio Controls - Sliders */
.audio-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.slider-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.slider-label .icon {
    width: 16px;
    height: 16px;
    color: var(--accent-primary);
}

.slider-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    min-width: 50px;
    text-align: right;
}

/* Custom Slider */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    outline: none;
    transition: all var(--transition-base);
    cursor: pointer;
}

.slider:hover {
    background: rgba(255, 255, 255, 0.15);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    transition: all var(--transition-base);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.8);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    transition: all var(--transition-base);
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.8);
}

/* Buttons */
button {
    font-family: inherit;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    position: relative;
    overflow: hidden;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--gradient-secondary);
    color: white;
    font-size: 1rem;
    margin-top: var(--spacing-md);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    position: relative;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

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

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: opacity var(--transition-fast);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-secondary {
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Loader */
.loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.loader.hidden {
    display: none;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Result Section */
.result-section {
    margin-top: var(--spacing-lg);
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hidden {
    display: none !important;
}

/* Waveform Container */
.waveform-container {
    width: 100%;
    height: 120px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

#waveform-canvas {
    width: 100%;
    height: 100%;
    display: block;
    min-width: 100px;
    min-height: 100px;
}

/* Audio Player */
.audio-player {
    width: 100%;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
    filter: invert(1) hue-rotate(180deg);
}

/* Download Options */
.download-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

@media (max-width: 640px) {
    .download-options {
        grid-template-columns: 1fr;
    }
}

.btn-download {
    padding: 0.875rem 1.25rem;
    background: var(--gradient-accent);
    color: white;
    font-size: 0.95rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-download:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-download-secondary {
    padding: 0.875rem 1.25rem;
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid rgba(139, 92, 246, 0.4);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.btn-download-secondary:hover:not(:disabled) {
    background: rgba(139, 92, 246, 0.3);
    border-color: rgba(139, 92, 246, 0.6);
    transform: translateY(-2px);
}

/* History Sidebar */
.history-sidebar {
    height: fit-content;
    position: sticky;
    top: var(--spacing-md);
    max-height: calc(100vh - var(--spacing-md) * 2);
    display: flex;
    flex-direction: column;
}

.history-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.history-header .icon {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
}

.history-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.history-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: calc(100vh - 250px);
}

.history-list::-webkit-scrollbar {
    width: 6px;
}

.history-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.history-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

.history-empty .icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-sm);
    opacity: 0.5;
}

.history-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    transition: all var(--transition-base);
    cursor: pointer;
}

.history-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.history-item-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.history-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.history-item-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.history-item-btn {
    padding: 0.25rem 0.5rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-item-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--accent-primary);
}

.history-item-btn .icon {
    width: 14px;
    height: 14px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .glass-card {
        padding: var(--spacing-md);
    }
    
    .history-sidebar {
        position: relative;
        top: 0;
        max-height: 400px;
    }
}

/* Server Status Banner */
.server-status-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--gradient-secondary);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding: var(--spacing-md);
    z-index: 10000;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    animation: slideDown 0.3s ease-out;
}

.server-status-banner.hidden {
    display: none;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.server-status-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.status-icon {
    width: 24px;
    height: 24px;
    color: white;
    flex-shrink: 0;
    animation: spin 2s linear infinite;
}

.status-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    color: white;
    min-width: 200px;
}

.status-text strong {
    font-size: 1rem;
    font-weight: 700;
}

.status-text span {
    font-size: 0.85rem;
    opacity: 0.9;
}

.btn-retry {
    padding: 0.625rem 1.25rem;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-retry.hidden {
    display: none;
}

.btn-retry:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.btn-retry:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-retry .icon {
    width: 16px;
    height: 16px;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Adjust body padding when banner is visible */
body:has(.server-status-banner:not(.hidden)) {
    padding-top: calc(var(--spacing-md) * 2 + 60px);
}

/* Utility Classes */
.fade-in {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.glow-effect {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

/* ============================================
   NEW FEATURES STYLES
   ============================================ */

/* Header Actions */
.header-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-icon {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-icon-small {
    background: transparent;
    border: none;
    padding: 0.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-icon-small:hover {
    color: var(--text-primary);
}

/* Text Stats */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.text-stats {
    display: flex;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stat-item {
    padding: 0.25rem 0.5rem;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
}

.text-actions {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.btn-secondary-small {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.btn-secondary-small:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 80px;
    right: var(--spacing-md);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-width: 400px;
}

.toast {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--glass-shadow);
    opacity: 0;
    transform: translateX(100%);
    transition: var(--transition-base);
    min-width: 300px;
}

.toast-show {
    opacity: 1;
    transform: translateX(0);
}

.toast-hide {
    opacity: 0;
    transform: translateX(100%);
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--accent-success); }
.toast-error .toast-icon { color: var(--accent-danger); }
.toast-warning .toast-icon { color: var(--accent-warning); }
.toast-info .toast-icon { color: var(--accent-primary); }

.toast-message {
    flex: 1;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    transition: var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-primary);
}

/* Skeleton Loaders */
.skeleton {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.05) 0%, 
        rgba(255, 255, 255, 0.1) 50%, 
        rgba(255, 255, 255, 0.05) 100%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-default {
    height: 40px;
    width: 100%;
}

.skeleton-text {
    height: 16px;
    width: 100%;
    margin-bottom: 0.5rem;
}

.skeleton-circle {
    height: 40px;
    width: 40px;
    border-radius: 50%;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    gap: var(--spacing-md);
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(99, 102, 241, 0.2);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-message {
    color: var(--text-primary);
    font-size: 1rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-base);
}

.modal:not(.hidden) {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition-base);
}

.modal:not(.hidden) .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    transition: var(--transition-fast);
}

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

.modal-body {
    margin-bottom: var(--spacing-md);
}

.modal-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* Presets */
.presets-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.preset-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.preset-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(4px);
}

.preset-name {
    color: var(--text-primary);
    font-weight: 500;
}

.preset-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* Batch Mode */
.batch-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

/* Advanced Audio Player */
.audio-player-container {
    margin: var(--spacing-md) 0;
}

.audio-controls-advanced {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

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

.audio-seek::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
}

.audio-seek::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.audio-time {
    color: var(--text-secondary);
    font-size: 0.85rem;
    min-width: 80px;
    text-align: right;
}

/* Sidebar Tabs */
.sidebar-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition-base);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}

.tab-btn.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent-primary);
}

.tab-btn:hover {
    color: var(--text-primary);
}

[data-tab-content] {
    display: block;
}

[data-tab-content].hidden {
    display: none;
}

/* History Actions */
.history-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

/* Dark Mode */
body.light-mode {
    --bg-primary: var(--light-bg-primary);
    --bg-secondary: var(--light-bg-secondary);
    --text-primary: var(--light-text-primary);
    --text-secondary: var(--light-text-secondary);
    --glass-bg: rgba(0, 0, 0, 0.05);
    --glass-border: rgba(0, 0, 0, 0.1);
    --text-muted: rgba(26, 26, 36, 0.6);
}

body.light-mode .background-gradient {
    opacity: 0.05;
}

/* Light Mode - Melhorias de Contraste */
body.light-mode .text-stats {
    color: rgba(26, 26, 36, 0.85);
}

body.light-mode .stat-item {
    background: rgba(0, 0, 0, 0.08);
    color: rgba(26, 26, 36, 0.9);
    font-weight: 500;
}

body.light-mode .btn-secondary-small {
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.15);
    color: rgba(26, 26, 36, 0.85);
    font-weight: 500;
}

body.light-mode .btn-secondary-small:hover {
    background: rgba(0, 0, 0, 0.12);
    border-color: rgba(0, 0, 0, 0.25);
    color: rgba(26, 26, 36, 1);
}

body.light-mode .btn-secondary-small .icon,
body.light-mode .btn-secondary-small i {
    color: rgba(26, 26, 36, 0.85);
}

body.light-mode .btn-secondary-small:hover .icon,
body.light-mode .btn-secondary-small:hover i {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .history-item {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.12);
}

body.light-mode .history-item:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: var(--accent-primary);
}

body.light-mode .history-item-text {
    color: rgba(26, 26, 36, 0.85);
    font-weight: 400;
}

body.light-mode .history-item-meta {
    color: rgba(26, 26, 36, 0.7);
}

body.light-mode .history-item-btn {
    background: rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.15);
    color: rgba(26, 26, 36, 0.75);
}

body.light-mode .history-item-btn:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

body.light-mode .history-item-btn .icon,
body.light-mode .history-item-btn i {
    color: rgba(26, 26, 36, 0.75);
}

body.light-mode .history-item-btn:hover .icon,
body.light-mode .history-item-btn:hover i {
    color: var(--accent-primary);
}

body.light-mode .ad-container {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.12);
}

body.light-mode .ad-placeholder {
    color: rgba(26, 26, 36, 0.7);
}

body.light-mode .audio-time {
    color: rgba(26, 26, 36, 0.8);
    font-weight: 500;
}

body.light-mode .btn-icon-small {
    color: rgba(26, 26, 36, 0.75);
}

body.light-mode .btn-icon-small:hover {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .btn-icon-small .icon,
body.light-mode .btn-icon-small i {
    color: rgba(26, 26, 36, 0.75);
}

body.light-mode .btn-icon-small:hover .icon,
body.light-mode .btn-icon-small:hover i {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .slider-label {
    color: rgba(26, 26, 36, 0.8);
}

body.light-mode .control-label {
    color: rgba(26, 26, 36, 0.8);
}

body.light-mode .history-empty {
    color: rgba(26, 26, 36, 0.6);
}

body.light-mode .history-empty .icon,
body.light-mode .history-empty i {
    color: rgba(26, 26, 36, 0.5);
}

body.light-mode .tab-btn {
    color: rgba(26, 26, 36, 0.7);
}

body.light-mode .tab-btn.active {
    color: rgba(26, 26, 36, 1);
    border-bottom-color: var(--accent-primary);
}

body.light-mode .tab-btn:hover {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .glass-input::placeholder {
    color: rgba(26, 26, 36, 0.5);
}

body.light-mode .glass-input {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.12);
    color: rgba(26, 26, 36, 0.9);
}

body.light-mode .glass-input:focus {
    background: rgba(0, 0, 0, 0.05);
    border-color: var(--accent-primary);
}

body.light-mode .btn-icon {
    background: rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.12);
    color: rgba(26, 26, 36, 0.85);
}

body.light-mode .btn-icon:hover {
    background: rgba(0, 0, 0, 0.1);
    color: rgba(26, 26, 36, 1);
}

body.light-mode .btn-icon .icon,
body.light-mode .btn-icon i {
    color: rgba(26, 26, 36, 0.85);
}

body.light-mode .btn-icon:hover .icon,
body.light-mode .btn-icon:hover i {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .header-actions .btn-label {
    color: rgba(26, 26, 36, 0.75);
}

body.light-mode .header-actions .btn-icon:hover .btn-label {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .section-label {
    color: rgba(26, 26, 36, 0.95);
}

body.light-mode .section-label .icon {
    color: var(--accent-primary);
}

body.light-mode .history-header h3 {
    color: rgba(26, 26, 36, 0.95);
}

body.light-mode .history-header .icon {
    color: var(--accent-primary);
}

body.light-mode .subtitle {
    color: rgba(26, 26, 36, 0.8);
}

body.light-mode .slider-value {
    color: var(--accent-primary);
    font-weight: 600;
}

body.light-mode .slider {
    background: rgba(0, 0, 0, 0.1);
}

body.light-mode .slider:hover {
    background: rgba(0, 0, 0, 0.15);
}

body.light-mode .modal-content {
    background: var(--light-bg-primary);
    border: 1px solid rgba(0, 0, 0, 0.15);
}

body.light-mode .modal-header h3 {
    color: rgba(26, 26, 36, 0.95);
}

body.light-mode .modal-close {
    color: rgba(26, 26, 36, 0.7);
}

body.light-mode .modal-close:hover {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .toast {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0, 0, 0, 0.15);
    color: rgba(26, 26, 36, 0.9);
}

body.light-mode .toast-message {
    color: rgba(26, 26, 36, 0.9);
}

body.light-mode .toast-close {
    color: rgba(26, 26, 36, 0.7);
}

body.light-mode .toast-close:hover {
    color: rgba(26, 26, 36, 1);
}

body.light-mode .preset-item {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.12);
}

body.light-mode .preset-item:hover {
    background: rgba(0, 0, 0, 0.08);
}

body.light-mode .preset-name {
    color: rgba(26, 26, 36, 0.9);
}

body.light-mode .template-item {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.12);
}

body.light-mode .template-info strong {
    color: rgba(26, 26, 36, 0.9);
}

body.light-mode .template-preview {
    color: rgba(26, 26, 36, 0.7);
}

body.light-mode .shortcut-desc {
    color: rgba(26, 26, 36, 0.8);
}

body.light-mode .shortcut-key {
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.15);
    color: rgba(26, 26, 36, 0.9);
}

body.light-mode .empty-state {
    color: rgba(26, 26, 36, 0.6);
}

/* Premium Features */
.premium-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: var(--gradient-secondary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.premium-feature {
    position: relative;
    opacity: 0.6;
    pointer-events: none;
}

.premium-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    z-index: 10;
    border-radius: var(--radius-md);
}

.premium-features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.premium-feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.premium-feature-item i {
    color: var(--accent-success);
}

.premium-pricing {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.price-option {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    position: relative;
}

.price-option.featured {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-secondary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.price-option h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--spacing-sm) 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.savings {
    color: var(--accent-success);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
}

/* Ad Container */
.ad-container {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    text-align: center;
}

.ad-placeholder {
    color: var(--text-muted);
    font-size: 0.85rem;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Control Label Row */
.control-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    gap: var(--spacing-xs);
    width: 100%;
    min-height: 1.5rem;
}

.control-label-row .control-label {
    margin: 0;
    flex: 1;
    line-height: 1.5;
    align-self: center;
}

.btn-icon-tiny {
    background: transparent;
    border: none;
    padding: 0.25rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
    margin-left: 0.5rem;
    vertical-align: middle;
}

.btn-icon-tiny:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-primary);
}

.btn-icon-tiny.active {
    color: var(--accent-primary);
}

.btn-icon-tiny:hover {
    color: var(--accent-primary);
}

.btn-icon-tiny.active {
    color: var(--accent-primary);
}

/* Header Actions - Button Labels */
.header-actions .btn-icon {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    min-width: auto;
    width: auto;
    height: auto;
}

.header-actions .btn-label {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.9;
    white-space: nowrap;
    color: var(--text-secondary);
}

.header-actions .btn-icon:hover .btn-label {
    color: var(--text-primary);
}

/* Hide labels on mobile to save space */
@media (max-width: 768px) {
    .header-actions .btn-label {
        display: none;
    }
    
    .header-actions .btn-icon {
        padding: 0.5rem;
        width: 40px;
        height: 40px;
    }
}

/* Templates */
.templates-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    max-height: 400px;
    overflow-y: auto;
}

.template-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.template-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.template-info strong {
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.template-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* Shortcuts */
.shortcuts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.shortcut-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--glass-bg);
    border-radius: var(--radius-md);
}

.shortcut-key {
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    min-width: 120px;
    text-align: center;
}

.shortcut-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-large {
    max-width: 600px;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-md);
}

/* Responsive */
@media (max-width: 768px) {
    .header-actions {
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        margin-top: 0;
    }
    
    .text-stats {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        max-width: none;
    }
    
    .toast {
        min-width: auto;
    }
    
    .text-actions {
        flex-wrap: wrap;
    }
    
    .modal-large {
        max-width: 95%;
    }
}