/* PaulStretch Alt ("OozeStretch") CSS Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    --bg-dark: #0a0d14;
    --bg-card: rgba(16, 22, 34, 0.82);
    --bg-card-hover: rgba(24, 32, 48, 0.92);
    --border-color: rgba(0, 255, 170, 0.15);
    --border-glow: rgba(0, 243, 255, 0.3);
    
    --accent-ooze: #00ffaa;
    --accent-ooze-glow: rgba(0, 255, 170, 0.35);
    --accent-cyan: #00d8ff;
    --accent-cyan-glow: rgba(0, 216, 255, 0.35);
    --accent-purple: #9d4edd;
    --accent-purple-glow: rgba(157, 78, 221, 0.35);
    --accent-pink: #ff2f87;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body.viewport-page {
    zoom: 1 !important;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.5;
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(0, 255, 170, 0.07) 0%, transparent 40%),
        radial-gradient(circle at 85% 60%, rgba(0, 216, 255, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(157, 78, 221, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, #06090e 0%, #0a0d14 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Header & Nav */
.header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    background: rgba(10, 13, 20, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-title img {
    height: 36px;
    width: auto;
    filter: drop-shadow(0 0 8px var(--accent-ooze-glow));
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-ooze) 60%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.badge-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    background: rgba(0, 255, 170, 0.12);
    color: var(--accent-ooze);
    border: 1px solid rgba(0, 255, 170, 0.3);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--accent-ooze);
    text-shadow: 0 0 10px var(--accent-ooze-glow);
}

/* Main Layout */
.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Hero Title Section */
.hero-section {
    text-align: center;
    padding: 1.5rem 1rem 0.5rem 1rem;
    position: relative;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-ooze) 40%, var(--accent-cyan) 75%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Liquid Slime Decorative Drips */
.slime-drip-bar {
    height: 4px;
    width: 100%;
    max-width: 400px;
    margin: 1.25rem auto 0 auto;
    background: linear-gradient(90deg, transparent, var(--accent-ooze), var(--accent-cyan), transparent);
    border-radius: 4px;
    position: relative;
    box-shadow: 0 0 12px var(--accent-ooze-glow);
}

/* Studio Workstation Grid */
.workstation-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .workstation-grid {
        grid-template-columns: 1fr;
    }
}

/* Glassmorphic Panel Card */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.05);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    border-color: rgba(0, 255, 170, 0.3);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 255, 170, 0.08);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.panel-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

/* Audio Drop Zone & Preset Selector */
.source-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.drop-zone {
    border: 2px dashed rgba(0, 255, 170, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    background: rgba(0, 255, 170, 0.03);
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--accent-ooze);
    background: rgba(0, 255, 170, 0.08);
    box-shadow: 0 0 20px var(--accent-ooze-glow);
}

.drop-zone-icon {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    color: var(--accent-ooze);
}

.drop-zone-text {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 600;
}

.drop-zone-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.preset-chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.preset-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preset-chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.preset-chip:hover, .preset-chip.active {
    background: rgba(0, 255, 170, 0.15);
    border-color: var(--accent-ooze);
    color: var(--accent-ooze);
    box-shadow: 0 0 10px var(--accent-ooze-glow);
}

/* Canvases Section: Waveform & Spectrogram */
.canvas-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    background: #05070a;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.canvas-wrapper canvas {
    display: block;
    width: 100%;
    height: 180px;
}

.canvas-overlay-tag {
    position: absolute;
    top: 0.5rem;
    left: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    background: rgba(0, 0, 0, 0.65);
    border-radius: 4px;
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 216, 255, 0.25);
    pointer-events: none;
}

.canvas-hint {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    pointer-events: none;
}

/* Playback Control Bar */
.playbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1.25rem;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-ooze) 0%, #00b377 100%);
    color: #04120c;
    box-shadow: 0 4px 16px var(--accent-ooze-glow);
}

.btn-primary:hover {
    filter: brightness(1.15);
    box-shadow: 0 6px 20px rgba(0, 255, 170, 0.5);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

.btn-freeze {
    background: rgba(157, 78, 221, 0.18);
    color: #d8b4fe;
    border: 1px solid var(--accent-purple);
}

.btn-freeze.active, .btn-freeze:hover {
    background: var(--accent-purple);
    color: #ffffff;
    box-shadow: 0 0 16px var(--accent-purple-glow);
}

.btn-export {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, #008eb0 100%);
    color: #03151f;
    box-shadow: 0 4px 16px var(--accent-cyan-glow);
}

.btn-export:hover {
    filter: brightness(1.15);
    box-shadow: 0 6px 20px rgba(0, 216, 255, 0.5);
    transform: translateY(-1px);
}

.time-display {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-ooze);
    margin-left: auto;
    background: rgba(0, 0, 0, 0.5);
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    border: 1px solid rgba(0, 255, 170, 0.2);
}

/* Control Grid & Sliders */
.controls-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

@media (max-width: 768px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }
}

.control-card {
    background: rgba(0, 0, 0, 0.35);
    border-radius: 12px;
    padding: 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.85rem;
}

.control-card-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.control-card-val {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-ooze);
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

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

.slider-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: background 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-ooze);
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-ooze-glow);
    transition: transform 0.15s ease, background 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.25);
    background: #ffffff;
}

select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
}

select:focus {
    border-color: var(--accent-ooze);
}

/* Sidebar Tooling */
.sidebar-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.telemetry-box {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 8px;
    padding: 0.85rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.telemetry-row {
    display: flex;
    justify-content: space-between;
}

.telemetry-row span:last-child {
    color: var(--accent-cyan);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

.footer a {
    color: var(--accent-ooze);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}