:root {
    /* Backgrounds */
    --bg: #0a0a0a;
    --bg-2: #050505;
    --surface: #1a1a1a;
    --surface-strong: #222222;
    
    /* Text */
    --text: #d4d4d4;
    --text-bright: #ffffff;
    --muted: #666666;
    
    /* Borders */
    --border: #333333;
    
    /* Accents */
    --accent: #ffb000;
    --accent-2: #00d4ff;
    --accent-3: #00ff88;
    
    /* Errors */
    --error: #ff3344;
    --error-soft: #330011;
    
    /* Effects */
    --shadow: 4px 4px 0px rgba(0, 0, 0, 0.8);
    --glow: 0 0 10px rgba(255, 176, 0, 0.3);
}

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

html::before {
    content: '';
    position: fixed;
    inset: 0;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.1) 2px,
            rgba(0, 0, 0, 0.1) 4px
        );
    pointer-events: none;
    z-index: 9999;
}

@keyframes scanline {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100vh); }
}

html::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.03);
    animation: scanline 8s linear infinite;
    pointer-events: none;
    z-index: 9998;
}

@keyframes flicker {
    0%, 100% { opacity: 1; }
    92% { opacity: 1; }
    93% { opacity: 0.8; }
    94% { opacity: 1; }
    95% { opacity: 0.9; }
    96% { opacity: 1; }
}

body {
    font-family: "Courier New", Consolas, "Lucida Console", monospace;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    animation: flicker 10s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

::selection {
    background: var(--accent);
    color: var(--bg);
}

/* Layout */
.site-shell {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    min-height: 100vh;
}

.site-shell::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    border-left: 1px solid rgba(255, 176, 0, 0.1);
    border-right: 1px solid rgba(255, 176, 0, 0.1);
    pointer-events: none;
}

/* Header */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-mark {
    color: var(--accent);
    font-weight: 800;
    font-size: 1.5rem;
    animation: pulse 2s ease-in-out infinite;
}

.brand-mark::before {
    content: '>';
    animation: blink 1.2s step-end infinite;
}

.brand-name {
    font-size: 1.2rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    text-shadow: var(--glow);
}

.brand-tagline {
    color: var(--accent-2);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

/* Hero Grid */
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
    gap: 2.5rem;
    align-items: start;
}

/* Cards */
.card {
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow);
    position: relative;
    padding: 1.5rem;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-2), transparent);
    opacity: 0.5;
}

.card-primary {
    border: 2px solid var(--accent);
}

.hero-card {
    padding: 2rem;
}

/* Typography */
h1 {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    line-height: 1.3;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    text-shadow: var(--glow);
    margin-bottom: 1rem;
}

h2 {
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent-2);
    margin-bottom: 1rem;
}

h3 {
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.eyebrow {
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--accent-2);
    margin-bottom: 0.5rem;
}

.hero-description {
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* Hero Points */
.hero-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.point {
    padding: 1rem;
    border: 1px solid var(--border);
    background: var(--bg);
}

.point-label {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-2);
    font-size: 0.75rem;
    display: block;
    margin-bottom: 0.25rem;
}

.point-label::before {
    content: '>';
    color: var(--accent-2);
    opacity: 0.5;
    margin-right: 0.5rem;
}

.point-value {
    color: var(--text);
    font-size: 0.9rem;
}

/* Converter Form */
.converter-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.field-label {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-2);
    font-size: 0.75rem;
}

.field-label::before {
    content: '>';
    color: var(--accent-2);
    opacity: 0.5;
    margin-right: 0.5rem;
}

.field-input {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
    font-size: 0.9rem;
}

.field-input:hover {
    border-color: var(--accent);
}

.field-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), inset 0 0 20px rgba(255, 176, 0, 0.05);
}

/* File Input */
.file-input-wrapper {
    position: relative;
}

.file-input {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-input-display {
    width: 100%;
    border: 2px dashed var(--border);
    background: var(--bg);
    color: var(--muted);
    padding: 2rem 1rem;
    text-align: center;
    transition: all 0.15s ease;
}

.file-input-wrapper:hover .file-input-display {
    border-color: var(--accent);
    color: var(--accent);
}

.file-input-display.has-file {
    border-color: var(--accent-3);
    color: var(--accent-3);
}

/* Buttons */
.button-primary {
    border: 2px solid var(--accent);
    padding: 1rem 1.5rem;
    background: transparent;
    color: var(--accent);
    font-weight: 800;
    letter-spacing: 0.15em;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.15s ease;
    box-shadow: var(--shadow);
    font-family: inherit;
    font-size: 0.9rem;
}

.button-primary:hover:not(:disabled) {
    background: var(--accent);
    color: var(--bg);
    box-shadow: 2px 2px 0px rgba(255, 176, 0, 0.5);
}

.button-primary:active:not(:disabled) {
    transform: translate(2px, 2px);
    box-shadow: none;
}

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

/* Format Badges */
.format-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.badge {
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--accent-3);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.15s ease;
}

.badge:hover {
    border-color: var(--accent-3);
    background: rgba(0, 255, 136, 0.1);
    text-shadow: 0 0 10px var(--accent-3);
}

/* Error Banner */
.error-banner {
    padding: 0.75rem 1rem;
    border: 1px solid var(--error);
    background: rgba(255, 51, 68, 0.1);
    color: var(--error);
    font-weight: 700;
    text-transform: uppercase;
    animation: pulse 1.5s ease-in-out infinite;
    margin-bottom: 1rem;
}

.error-banner::before {
    content: '!!';
    margin-right: 0.75rem;
    animation: blink 0.5s step-end infinite;
}

/* Success Banner */
.success-banner {
    padding: 0.75rem 1rem;
    border: 1px solid var(--accent-3);
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-3);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.success-banner::before {
    content: 'OK';
    margin-right: 0.75rem;
}

/* Progress */
.progress-container {
    margin: 1rem 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--accent);
}

.progress-text {
    font-size: 0.75rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
}

/* Support Section */
.support-section {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
}

.support-card {
    padding: 1.5rem;
    border: 1px solid var(--border);
    background: var(--surface);
}

.support-card h3 {
    color: var(--accent-2);
}

.support-card ul {
    list-style: none;
    margin-top: 1rem;
}

.support-card li {
    padding: 0.35rem 0;
    color: var(--text);
    font-size: 0.9rem;
}

.support-card li::before {
    content: '>';
    color: var(--accent-3);
    margin-right: 0.5rem;
}

/* Footer */
.site-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* Audio Info Display */
.audio-info {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 1rem;
    margin-top: 1rem;
}

.audio-info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.audio-info-row:last-child {
    border-bottom: none;
}

.audio-info-label {
    color: var(--muted);
    font-size: 0.8rem;
    text-transform: uppercase;
}

.audio-info-value {
    color: var(--text);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-grid,
    .support-grid,
    .hero-points {
        grid-template-columns: 1fr;
    }
    
    .site-header {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 640px) {
    .site-shell {
        padding: 1rem;
    }
    
    .hero-card,
    .converter-card {
        padding: 1.25rem;
    }
    
    .hero-points {
        grid-template-columns: 1fr;
    }
}

/* Blazor Error UI */
#blazor-error-ui {
    background: var(--error-soft);
    color: var(--error);
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    border-top: 2px solid var(--error);
    font-family: inherit;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

#blazor-error-ui .reload {
    color: var(--accent);
    margin-left: 1rem;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

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

/* Terminal Cursor */
.terminal-cursor::after {
    content: '_';
    animation: blink 1.2s step-end infinite;
    color: var(--accent);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}