@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap');

:root {
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --bg: #05050a;
    --surface: rgba(18, 18, 31, 0.8);
    --surface-hover: rgba(26, 26, 46, 0.9);
    --border: rgba(255, 255, 255, 0.1);
    --text: #f8fafc;
    --muted: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --accent: #a78bfa;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: 
        radial-gradient(circle at 10% 10%, rgba(99, 102, 241, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(167, 139, 250, 0.1) 0%, transparent 40%),
        var(--bg);
}

.container {
    width: 100%;
    max-width: 600px;
    position: relative;
}

.glass-card {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.header {
    text-align: center;
    margin-bottom: 2rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 1rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.field {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.6rem;
    padding-left: 4px;
}

select, textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    padding: 0.8rem 1rem;
    font-size: 1rem;
    transition: all 0.2s;
    outline: none;
}

select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

textarea {
    min-height: 120px;
    line-height: 1.5;
    resize: none;
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.slider-group input {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    appearance: none;
    cursor: pointer;
}

.slider-group input::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 0 10px var(--primary-glow);
}

.actions {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

button {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

#btnSpeak {
    background: var(--primary);
    color: white;
    box-shadow: 0 10px 20px -10px var(--primary-glow);
}

#btnSpeak:hover:not(:disabled) {
    transform: translateY(-2px);
    filter: brightness(1.1);
    box-shadow: 0 15px 30px -10px var(--primary-glow);
}

#btnSpeak:active:not(:disabled) {
    transform: translateY(0);
}

#btnSpeak:disabled {
    opacity: 0.6;
    cursor: wait;
}

#btnDownload {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    display: none;
}

#btnDownload:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--muted);
}

.status-area {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.2);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: relative;
}

.status-dot::after {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.4;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(2); opacity: 0; }
    100% { transform: scale(1); opacity: 0.4; }
}

.loading .status-dot { color: var(--warning); }
.ready .status-dot { color: var(--success); }
.error .status-dot { color: var(--error); }

audio {
    width: 100%;
    margin-top: 1.5rem;
    height: 40px;
    border-radius: 10px;
    filter: invert(100%) hue-rotate(180deg) brightness(1.5);
    display: none;
}

/* Progress Bar */
.progress-container {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-left: 10px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary-glow);
    transition: width 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
}

.progress-percent {
    font-size: 0.65rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    white-space: nowrap;
}

.progress-bar.pulse {
    width: 100% !important;
    animation: progress-pulse 1.5s ease-in-out infinite;
    transform-origin: left;
}

@keyframes progress-pulse {
    0% { transform: scaleX(0); opacity: 0.5; }
    50% { transform: scaleX(1); opacity: 1; }
    100% { transform: scaleX(1); opacity: 0; }
}

/* Responsive */
@media (max-width: 480px) {
    .controls-grid { grid-template-columns: 1fr; }
    .glass-card { padding: 1.5rem; }
}