:root {
    --bg-dark: #09090b;
    --bg-card: #18181b;
    --bg-input: #27272a;
    --border-color: #3f3f46;
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --brand-orange: #E8913A;
    --brand-brown: #8B5E3C;
    --brand-cream: #F5F0E8;
    --accent: var(--brand-orange);
}

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

body {
    font-family: 'Space Mono', monospace;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 2px solid var(--border-color);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-logo {
    width: 40px;
    height: 40px;
    image-rendering: pixelated;
}

.brand-name {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
}

.brand-badges {
    display: flex;
    gap: 0.5rem;
}

.badge {
    border: 2px solid var(--border-color);
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
}

.badge.highlight {
    background-color: var(--brand-brown);
    border-color: var(--brand-brown);
    color: var(--brand-cream);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
    flex: 1;
}

.desktop-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 900px) {
    .desktop-layout {
        grid-template-columns: 1fr 1.2fr;
        align-items: start;
    }
    
    .left-col {
        position: sticky;
        top: 4rem;
    }
}

/* Hero */
.hero {
    margin-bottom: 3rem;
}

.hero h1 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 900;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
}

.hero h1 .accent {
    color: var(--accent);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    line-height: 1.6;
}

/* Cards */
.form-card, .result-card {
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: border-color 0.3s;
}

.form-card:hover {
    border-color: var(--text-secondary);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-number {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--border-color);
}

.card-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 3rem 1rem;
    text-align: center;
    cursor: pointer;
    background-color: var(--bg-dark);
    transition: all 0.2s;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--accent);
    background-color: rgba(232, 145, 58, 0.05);
}

.upload-content i {
    font-size: 2.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.upload-content h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.browse-link {
    color: var(--accent);
    text-decoration: underline;
}

/* File Preview */
.file-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 1.1rem;
}

.file-preview i {
    color: var(--accent);
}

.remove-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
}

.remove-btn:hover {
    color: #ef4444;
}

/* Inputs */
.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: flex;
    justify-content: space-between;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

textarea {
    width: 100%;
    background-color: var(--bg-dark);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: 'Space Mono', monospace;
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* Accordion */
details.accordion-card {
    cursor: pointer;
}

.accordion-summary {
    margin-bottom: 0;
    list-style: none; /* Hide default arrow */
    justify-content: flex-start;
}

.accordion-summary::-webkit-details-marker {
    display: none;
}

.accordion-icon {
    margin-left: auto;
    transition: transform 0.3s;
    color: var(--text-secondary);
}

details[open] .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
    margin-top: 1.5rem;
    cursor: default;
}

/* Sliders */
.slider-group {
    margin-bottom: 2rem;
}

.slider-group:last-child {
    margin-bottom: 0;
}

.slider-value {
    color: var(--accent);
}

input[type=range] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 24px;
    width: 24px;
    border-radius: 4px;
    background: var(--accent);
    cursor: pointer;
    margin-top: -10px;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
}

/* Button */
.primary-btn {
    width: 100%;
    background-color: var(--text-primary);
    color: var(--bg-dark);
    border: none;
    border-radius: 8px;
    padding: 1.5rem;
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.2s, background-color 0.2s;
}

.primary-btn:hover {
    transform: translateY(-4px);
    background-color: var(--accent);
}

.primary-btn:disabled {
    background-color: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

/* Spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--bg-dark);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

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

/* Result */
.result-header h2 {
    color: #10b981;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

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

.custom-audio {
    width: 100%;
}

.download-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    transition: border-color 0.2s;
}

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

/* Progress Overlay */
.progress-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(9, 9, 11, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.progress-container {
    position: relative;
    width: 160px;
    height: 160px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-circle-bg {
    stroke: var(--border-color);
}

.progress-ring-circle {
    stroke: var(--accent);
    stroke-dasharray: 440;
    stroke-dashoffset: 440;
    transition: stroke-dashoffset 0.5s linear;
}

.progress-text-container {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.progress-percent {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1;
}

.progress-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
    margin-top: 0.25rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    border-top: 2px solid var(--border-color);
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

/* Mobile */
@media (max-width: 600px) {
    .hero h1 { font-size: 3.5rem; }
    .container { padding: 2rem 1rem; }
    .form-card, .result-card { padding: 1.5rem; }
}