:root {
    --primary-color: #6366f1;
    --primary-hover: #5b5fff;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --background-color: #0f0f23;
    --surface-color: #1a1a2e;
    --card-color: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: #27272a;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(120, 219, 255, 0.15) 0%, transparent 50%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 2.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Main Content */
.main-content {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1fr;
}

/* Input Section */
.input-section {
    background: var(--surface-color);
    border-radius: 1.5rem;
    padding: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
}

.voice-selector {
    margin-bottom: 2rem;
}

.label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.label i {
    color: var(--primary-color);
}

.voice-select {
    width: 100%;
    padding: 1rem;
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.voice-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.voice-select:hover {
    border-color: var(--primary-hover);
}

.text-input-container {
    margin-bottom: 2rem;
}

.text-input {
    width: 100%;
    padding: 1rem;
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    min-height: 150px;
    transition: all 0.3s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.char-counter {
    text-align: right;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.generate-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.generate-btn {
    background: var(--gradient-1);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.loading-spinner {
    display: none;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
}

.loading-spinner.show {
    display: flex;
}

/* Settings Section */
.settings-section {
    background: var(--surface-color);
    border-radius: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.settings-header:hover {
    background: rgba(99, 102, 241, 0.05);
}

.settings-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.settings-header h3 i {
    color: var(--primary-color);
}

.settings-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.reset-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 0.5rem;
}

.reset-btn:hover {
    color: var(--accent-color);
    background: rgba(6, 182, 212, 0.1);
}

.toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
}

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

.toggle-btn.rotated {
    transform: rotate(180deg);
}

.settings-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.settings-content.expanded {
    max-height: 500px;
}

.setting-group {
    padding: 0 2rem 2rem;
}

.setting-item {
    margin-bottom: 2rem;
}

.setting-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-weight: 500;
    font-size: 1rem;
}

.setting-label i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.setting-value {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.slider {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    margin-bottom: 0.5rem;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--gradient-1);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--gradient-1);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Audio Section */
.audio-section {
    background: var(--surface-color);
    border-radius: 1.5rem;
    padding: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
}

.audio-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.audio-section h3 i {
    color: var(--success-color);
}

.audio-player {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.audio-controls {
    width: 100%;
    height: 60px;
    background: var(--card-color);
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.audio-controls::-webkit-media-controls-panel {
    background-color: var(--card-color);
}

.audio-actions {
    display: flex;
    gap: 1rem;
}

.action-btn {
    background: var(--card-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

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



/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .input-section,
    .settings-section,
    .audio-section {
        padding: 1.5rem;
    }
    
    .audio-actions {
        flex-direction: column;
    }
    

}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .logo h1 {
        font-size: 1.75rem;
    }
    
    .generate-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .generate-btn {
        justify-content: center;
    }
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.input-section,
.settings-section,
.audio-section {
    animation: slideIn 0.6s ease-out;
}



/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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