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

:root {
    /* ElevenLabs Premium Colors */
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --primary-light: #a78bfa;
    --secondary: #ec4899;
    --accent: #06b6d4;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Ultra Dark Theme */
    --bg-primary: #0c0a0f;
    --bg-secondary: #151218;
    --bg-tertiary: #1c1825;
    --bg-elevated: #231d2e;
    --bg-card: #1a1625;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;
    
    /* Border Colors */
    --border-primary: rgba(124, 58, 237, 0.2);
    --border-secondary: rgba(255, 255, 255, 0.08);
    --border-tertiary: rgba(255, 255, 255, 0.04);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.4);
    --shadow-glow-lg: 0 0 60px rgba(124, 58, 237, 0.6);
    
    /* Radius */
    --radius: 16px;
    --radius-sm: 12px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

/* Animated Gradient Background */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: backgroundFloat 20s ease infinite;
}

@keyframes backgroundFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

/* Noise Texture Overlay */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1;
}

/* Navbar Ultra Premium */
.navbar {
    background: rgba(21, 18, 24, 0.8);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    padding: 1.25rem 3rem;
    box-shadow: 0 1px 0 var(--border-secondary), var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 2.5rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-secondary);
}

.logo {
    font-size: 1.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #06b6d4 100%);
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
    filter: drop-shadow(0 0 20px rgba(124, 58, 237, 0.6));
    position: relative;
}

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

.navbar a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
    font-size: 0.95rem;
    letter-spacing: -0.2px;
}

.navbar a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(236, 72, 153, 0.15));
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: var(--transition);
}

.navbar a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar a:hover {
    color: var(--text-primary);
}

.navbar a:hover::before {
    opacity: 1;
}

.navbar a:hover::after {
    width: 70%;
}

/* Container Ultra Premium */
.container {
    max-width: 1400px;
    margin: 2.5rem auto;
    padding: 3rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-secondary);
    animation: fadeInUp 0.6s ease-out;
    position: relative;
    z-index: 2;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), var(--accent), transparent);
    background-size: 200% 100%;
    animation: gradientShift 4s ease infinite;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Typography Ultra Premium */
h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
    line-height: 1.1;
    position: relative;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin: 3rem 0 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    padding-left: 1.5rem;
    letter-spacing: -1px;
}

h2::before {
    content: '';
    position: absolute;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.5);
}

h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-secondary);
    letter-spacing: -0.3px;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

/* Alerts Ultra Premium - DARK */
.alert {
    padding: 2rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    border-left: 4px solid;
    animation: slideInRight 0.5s ease-out;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.02));
    pointer-events: none;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-info {
    border-left-color: var(--info);
    background: var(--bg-tertiary);
}

.alert-info h3, .alert-info h4 {
    color: var(--info);
    margin-top: 0;
}

.alert-info ul {
    margin: 1rem 0 0 2rem;
}

.alert-info li {
    margin: 0.75rem 0;
    color: var(--text-secondary);
}

.message {
    border-left-color: var(--success);
    background: var(--bg-tertiary);
    color: var(--success);
}

.error {
    border-left-color: var(--danger);
    background: var(--bg-tertiary);
    color: var(--danger);
}

/* Forms Ultra Premium */
.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    letter-spacing: -0.2px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.15), inset 0 1px 2px rgba(0, 0, 0, 0.3);
    background: var(--bg-elevated);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
    line-height: 1.6;
}

.form-group small {
    display: block;
    margin-top: 0.75rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Buttons Ultra Premium */
input[type="submit"],
button {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-primary);
    padding: 1rem 2.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow), var(--shadow-glow);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    letter-spacing: -0.2px;
}

input[type="submit"]::before,
button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: var(--transition);
}

input[type="submit"]:hover::before,
button:hover::before {
    left: 100%;
}

input[type="submit"]:hover,
button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow-lg);
}

input[type="submit"]:active,
button:active {
    transform: translateY(0);
}

input[type="submit"]:disabled,
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

button[style*="background-color: #e74c3c"] {
    background: linear-gradient(135deg, var(--danger), #dc2626) !important;
    box-shadow: var(--shadow), 0 0 30px rgba(239, 68, 68, 0.4) !important;
}

button[style*="background-color: #95a5a6"] {
    background: linear-gradient(135deg, #52525b, #3f3f46) !important;
    box-shadow: var(--shadow) !important;
}

/* Tables Ultra Premium */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 2rem 0;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-secondary);
}

thead {
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-secondary);
}

thead th {
    padding: 1.25rem 1.5rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-tertiary);
}

tbody tr {
    border-bottom: 1px solid var(--border-tertiary);
    transition: var(--transition);
}

tbody tr:hover {
    background: var(--bg-elevated);
}

tbody tr:last-child {
    border-bottom: none;
}

tbody td {
    padding: 1.25rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

tbody td strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Audio Player Ultra Premium */
audio {
    width: 100%;
    margin: 1rem 0;
    border-radius: var(--radius-sm);
    outline: none;
    filter: brightness(0.9) contrast(1.1);
}

/* Progress Bar Ultra Premium */
.progress-container {
    display: none;
    margin: 2.5rem 0;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    animation: fadeIn 0.4s ease-out;
    border: 1px solid var(--border-secondary);
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

.progress-bg {
    width: 100%;
    height: 10px;
    background: var(--bg-elevated);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 1.5rem 0;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    background-size: 200% 100%;
    animation: gradientShift 2s ease infinite;
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.7);
    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 2s infinite;
}

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

#progress-text {
    text-align: center;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 1rem;
    font-size: 0.95rem;
}

/* Metrics Dashboard Ultra Premium */
.metrics-dashboard {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    margin: 3rem 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-secondary);
}

.metrics-dashboard h3 {
    margin-top: 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.75rem;
}

#metrics-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.metric-item {
    background: var(--bg-elevated);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition-bounce);
    border: 1px solid var(--border-secondary);
    position: relative;
    overflow: hidden;
}

.metric-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    background-size: 200% 100%;
    animation: gradientShift 3s ease infinite;
    opacity: 0;
    transition: var(--transition);
}

.metric-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-primary);
}

.metric-item:hover::before {
    opacity: 1;
}

.metric-value {
    font-size: 2.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    filter: drop-shadow(0 2px 8px rgba(124, 58, 237, 0.3));
}

.metric-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Feature Cards Ultra Premium - DARK */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2.5rem 0;
}

.feature-card {
    padding: 2.5rem;
    border-radius: var(--radius);
    border-left: 4px solid;
    transition: var(--transition-bounce);
    box-shadow: var(--shadow);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent, rgba(124, 58, 237, 0.05));
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-primary);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card h4 {
    margin-top: 0;
    color: var(--text-primary);
}

.feature-card p {
    margin: 0;
    font-size: 0.95rem;
}

/* Lists Ultra Premium */
ol, ul {
    margin: 1.5rem 0 1.5rem 2.5rem;
}

li {
    margin: 1rem 0;
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Links Ultra Premium */
a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition);
}

a:hover {
    color: var(--primary-light);
}

a:hover::after {
    width: 100%;
}

/* Audio Result Ultra Premium */
#audio-result {
    margin-top: 2.5rem;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    animation: fadeInUp 0.6s ease-out;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-secondary);
}

#audio-result h3 {
    color: var(--success);
    margin-top: 0;
}

/* Responsive Ultra Premium */
@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
        gap: 1rem;
        padding: 1rem 1.5rem;
    }
    
    .container {
        margin: 1.5rem;
        padding: 2rem;
    }
    
    h1 {
        font-size: 2.25rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    table {
        font-size: 0.875rem;
    }
    
    thead th,
    tbody td {
        padding: 1rem 0.75rem;
    }
    
    #metrics-container {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* Scrollbar Ultra Premium */
::-webkit-scrollbar {
    width: 12px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
}

/* Loading Animation Ultra Premium */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.98);
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Card Style for Forms Ultra Premium - DARK */
form {
    background: var(--bg-tertiary);
    padding: 2.5rem;
    border-radius: var(--radius);
    margin: 2rem 0;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-secondary);
}

/* Badge Style Ultra Premium */
.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.3px;
}

/* Hover Effects Ultra Premium */
.interactive {
    transition: var(--transition-bounce);
}

.interactive:hover {
    transform: scale(1.03);
}

/* Floating Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* Glass Effect Ultra Premium */
.glass {
    background: rgba(21, 18, 24, 0.7);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--border-secondary);
}

/* Glow Effect Ultra Premium */
.glow {
    box-shadow: 0 0 30px rgba(124, 58, 237, 0.4);
}

.glow:hover {
    box-shadow: 0 0 50px rgba(124, 58, 237, 0.6);
}

/* Section Boxes - DARK */
.form-section,
.voices-section,
.main-form,
.sidebar,
.section-box,
.audio-card {
    background: var(--bg-tertiary) !important;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-secondary);
}

.stat-box,
.feature-box {
    background: var(--bg-tertiary) !important;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-secondary);
}