/* style.css — Premium Cyber-Neon Glassmorphic UI stylesheet for Groovebox v5 */

:root {
    /* Color Palette */
    --bg-color: #06090e;
    --bg-gradient: radial-gradient(circle at top, #0c121e 0%, #05070a 100%);
    
    /* Glassmorphism surfaces */
    --panel-bg: rgba(18, 24, 38, 0.72);
    --panel-bg-dense: rgba(10, 14, 22, 0.9);
    --border: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 245, 255, 0.15);
    --border-strong: rgba(255, 255, 255, 0.18);
    --shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
    --glass-blur: blur(14px);

    /* Text */
    --text-main: #f0f4f8;
    --text-dim: #7d8b9e;
    
    /* Cyber Neons */
    --accent: #00f5ff;
    --accent-glow: 0 0 10px rgba(0, 245, 255, 0.4);
    --accent-active: #32ff7e;
    --accent-danger: #ff0055;
    --accent-warn: #ff9f1a;
    --accent-purple: #bc8cff;
    --accent-yellow: #f2cc60;

    /* Sequencer Steps */
    --step-off: rgba(255, 255, 255, 0.03);
    --step-border: rgba(255, 255, 255, 0.05);
    --step-on: #00f5ff;
    --step-play: #32ff7e;
    --beat-marker: #ff007f;

    /* Spacing & Borders */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 24px;
    
    --r-sm: 4px;
    --r-md: 6px;
    --r-lg: 12px;
    --r-full: 9999px;

    /* Fonts */
    --font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    --font-mono: "Share Tech Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html, body {
    height: 100%;
    background-color: var(--bg-color);
    background-image: var(--bg-gradient);
    color: var(--text-main);
    font-family: var(--font-sans);
    overflow-x: hidden;
}

body {
    padding: var(--sp-5);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Master container */
.groovebox {
    background-color: var(--panel-bg);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: var(--sp-5);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow);
    max-width: 1450px;
    width: 100%;
    margin: 0 auto;
    transition: border-color 0.3s;
}

.groovebox:hover {
    border-color: var(--border-glow);
}

/* Transport Section */
.transport {
    display: grid;
    grid-template-columns: auto auto auto auto auto 1fr auto;
    gap: var(--sp-4);
    align-items: center;
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--sp-5);
}

/* Buttons styling */
button {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 10px 18px;
    cursor: pointer;
    border-radius: var(--r-md);
    font-weight: 700;
    font-size: 13px;
    font-family: var(--font-sans);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

button:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--border-strong);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
}

button:active:not(:disabled) {
    transform: scale(0.97);
}

button:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

/* Transport specific overrides */
.btn-transport {
    font-size: 14px;
    padding: 12px 24px;
}

#btn-play.is-active {
    background: var(--accent-active);
    color: #05070a;
    border-color: var(--accent-active);
    box-shadow: 0 0 15px rgba(50, 255, 126, 0.4);
}

#btn-stop:hover:not(:disabled) {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
    box-shadow: 0 0 12px rgba(255, 0, 85, 0.25);
}

/* BPM & Swing Inputs */
.bpm-control {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    padding: 2px var(--sp-3);
    border-radius: var(--r-md);
}

.bpm-control label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

input[type="number"] {
    background: transparent;
    color: var(--accent);
    border: none;
    padding: 6px;
    width: 60px;
    font-family: var(--font-mono);
    font-size: 18px;
    text-align: center;
    outline: none;
}

input[type="number"]:disabled {
    color: var(--text-dim);
    cursor: not-allowed;
}

/* Transport Status display */
.status {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

.status-value {
    font-family: var(--font-mono);
    font-size: 16px;
    padding: var(--sp-1) var(--sp-2);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--r-sm);
    border: 1px solid var(--border);
    margin-left: var(--sp-1);
    transition: all 0.2s;
}

.status-value.is-ready {
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: inset 0 0 5px rgba(0, 245, 255, 0.2);
}

.status-value.is-playing {
    color: var(--accent-active);
    border-color: var(--accent-active);
    box-shadow: inset 0 0 5px rgba(50, 255, 126, 0.2);
    animation: status-pulsate 1.5s infinite alternate;
}

@keyframes status-pulsate {
    0% { opacity: 0.7; }
    100% { opacity: 1; box-shadow: inset 0 0 10px rgba(50, 255, 126, 0.4), 0 0 8px rgba(50, 255, 126, 0.2); }
}

.status-value.is-stopped {
    color: var(--accent-warn);
    border-color: var(--accent-warn);
}

/* Pattern Selection & Arrangement Bar */
.panel {
    margin-bottom: var(--sp-4);
}

.patterns-panel {
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--border);
}

.pattern-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--sp-4);
}

.pattern-group {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    background: rgba(0, 0, 0, 0.15);
    padding: 6px var(--sp-3);
    border-radius: var(--r-md);
    border: 1px solid var(--border);
}

.group-label {
    color: var(--text-dim);
    font-size: 10px;
    font-weight: 700;
    margin-right: var(--sp-1);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.pat-btn, .count-btn, .proj-btn {
    padding: 6px 12px;
    min-width: 38px;
    font-family: var(--font-mono);
    font-size: 14px;
}

.pat-btn.is-active,
.count-btn.is-active {
    background: var(--accent);
    color: #05070a;
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.35);
}

.quant-btn {
    font-size: 11px;
    font-family: var(--font-sans);
    min-width: 58px;
}

.pat-btn.pending {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 8px rgba(0, 245, 255, 0.2);
    animation: pat-pending-blink 0.8s ease-in-out infinite alternate;
}

@keyframes pat-pending-blink {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

.tool-btn {
    padding: 6px 8px;
    font-size: 11px;
}

/* History buttons disabled state styling */
.tool-btn:disabled {
    opacity: 0.25;
}

/* Song Mode Arranger Panel & Timeline */
.pattern-bar {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-3);
    width: 100%;
}

.pattern-bar-top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--sp-3);
    width: 100%;
}

/* Pattern Theme Colors for Arranger Blocks */
.pat-theme-0 { --pat-color: #3fb950; --pat-glow-color: rgba(63, 185, 80, 0.45); }
.pat-theme-1 { --pat-color: #58a6ff; --pat-glow-color: rgba(88, 166, 255, 0.45); }
.pat-theme-2 { --pat-color: #bc8cff; --pat-glow-color: rgba(188, 140, 255, 0.45); }
.pat-theme-3 { --pat-color: #db61a2; --pat-glow-color: rgba(219, 97, 162, 0.45); }
.pat-theme-4 { --pat-color: #f0883e; --pat-glow-color: rgba(240, 136, 62, 0.45); }
.pat-theme-5 { --pat-color: #f2cc60; --pat-glow-color: rgba(242, 204, 96, 0.45); }
.pat-theme-6 { --pat-color: #39c5cf; --pat-glow-color: rgba(57, 197, 207, 0.45); }
.pat-theme-7 { --pat-color: #ff7b72; --pat-glow-color: rgba(255, 123, 114, 0.45); }

.song-arranger {
    display: flex;
    gap: var(--sp-3);
    background: rgba(0, 0, 0, 0.25);
    padding: var(--sp-3);
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    align-items: stretch;
    width: 100%;
}

.song-arranger.is-chain-on {
    border-color: rgba(50, 255, 126, 0.3);
    box-shadow: 0 0 15px rgba(50, 255, 126, 0.08);
}

.song-arranger-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    min-width: 140px;
    padding-right: var(--sp-2);
    border-right: 1px solid var(--border);
    justify-content: center;
}

.song-arranger-sidebar .group-label {
    margin-bottom: 2px;
    text-align: center;
}

.song-timeline-container {
    flex-grow: 1;
    overflow-x: auto;
    display: flex;
    align-items: center;
    padding: var(--sp-2) 0;
    min-height: 120px;
}

.song-timeline-container::-webkit-scrollbar {
    height: 6px;
}
.song-timeline-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--r-full);
}
.song-timeline-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--r-full);
}
.song-timeline-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.song-timeline {
    display: flex;
    gap: var(--sp-3);
    align-items: center;
    height: 100%;
    width: max-content;
    padding-right: 40px;
}

.chain-empty {
    color: var(--text-dim);
    font-size: 12px;
    font-style: italic;
    margin-left: var(--sp-3);
}

/* Timeline Cards */
.timeline-block-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 140px;
    height: 98px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    position: relative;
    padding: var(--sp-2) var(--sp-2) 0 var(--sp-2);
    cursor: grab;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
    user-select: none;
    -webkit-user-select: none;
}

.timeline-block-card:active {
    cursor: grabbing;
}

.timeline-block-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.45);
}

.timeline-block-card.is-playing {
    border-color: var(--pat-color);
    box-shadow: 0 0 16px var(--pat-glow-color);
    animation: block-playing-glow 2s infinite alternate ease-in-out;
    background: rgba(255, 255, 255, 0.04);
}

@keyframes block-playing-glow {
    0% { border-color: rgba(255,255,255,0.2); box-shadow: 0 0 4px rgba(255,255,255,0.05); }
    100% { border-color: var(--pat-color); box-shadow: 0 0 18px var(--pat-glow-color); }
}

.timeline-block-card.is-dragging {
    opacity: 0.35;
    border: 1px dashed var(--accent);
    transform: scale(0.95);
}

/* Card details */
.card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.block-pat-tag {
    display: flex;
    align-items: center;
    gap: 4px;
}

.block-pat-select {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--r-sm);
    color: var(--pat-color);
    text-shadow: 0 0 5px var(--pat-glow-color);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    padding: 1px var(--sp-1);
    cursor: pointer;
    outline: none;
}

.block-pat-select option {
    background: var(--bg-color);
    color: var(--text-main);
    text-shadow: none;
}

.card-delete-btn {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    min-width: 0;
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.15s;
}

.card-delete-btn:hover {
    color: var(--accent-danger);
}

.card-middle {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
}

.repeat-control {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(0, 0, 0, 0.35);
    padding: 2px 6px;
    border-radius: var(--r-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.repeat-btn {
    background: none;
    border: none;
    padding: 2px 4px;
    margin: 0;
    min-width: 0;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-dim);
    cursor: pointer;
    opacity: 0.7;
    line-height: 1;
    transition: all 0.15s;
}

.repeat-btn:hover {
    opacity: 1;
    color: var(--accent);
}

.repeat-val {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-main);
    font-weight: 700;
    min-width: 34px;
    text-align: center;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 6px;
}

.block-idx-label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-dim);
    opacity: 0.6;
}

.card-arrows {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
}

.timeline-block-card:hover .card-arrows {
    opacity: 1;
}

.arrow-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1px 4px;
    margin: 0;
    min-width: 0;
    font-size: 9px;
    color: var(--text-dim);
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.15s;
}

.arrow-btn:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Progress bar inside card */
.timeline-block-progress-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.05);
}

.timeline-block-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--pat-color);
    box-shadow: 0 0 6px var(--pat-color);
    transition: width 0.1s linear;
}

.save-state {
    font-size: 11px;
    color: var(--text-dim);
    margin-left: var(--sp-2);
    min-width: 80px;
}

.save-state.is-ok { color: var(--accent-active); }
.save-state.is-warn { color: var(--accent-danger); }

/* --- Channel Matrix Layout --- */
.channels-panel {
    margin-top: var(--sp-2);
}

.channels {
    display: grid;
    gap: var(--sp-2);
}

.channel {
    display: grid;
    grid-template-columns: 80px 130px 240px 1fr;
    gap: var(--sp-4);
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.channel:hover {
    border-color: var(--border-strong);
    background: rgba(255, 255, 255, 0.01);
}

.channel.is-channel-selected {
    border-color: var(--accent);
    background: rgba(0, 245, 255, 0.015);
    box-shadow: inset 0 0 12px rgba(0, 245, 255, 0.05);
}

.channel.is-muted {
    opacity: 0.4;
}

.channel.is-soloed {
    border-color: var(--accent-active);
    box-shadow: inset 0 0 10px rgba(50, 255, 126, 0.05);
}

/* Channel head */
.ch-head {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ch-label {
    font-size: 13px;
    font-weight: 800;
    color: var(--ch-color, var(--accent));
    border-left: 3px solid var(--ch-color, var(--accent));
    padding-left: var(--sp-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ch-label-btn {
    cursor: pointer;
    transition: color 0.15s, opacity 0.15s;
}

.ch-label-btn:hover {
    color: #fff;
    opacity: 0.8;
}

.ms-row {
    display: flex;
    gap: var(--sp-1);
}

.ms-btn {
    padding: 3px 0;
    width: 28px;
    font-size: 11px;
    font-weight: 800;
    border-radius: var(--r-sm);
    line-height: 1.2;
}

.ms-btn[title="Mute"].is-on {
    background: var(--accent-danger);
    color: #05070a;
    border-color: var(--accent-danger);
    box-shadow: 0 0 8px rgba(255, 0, 85, 0.35);
}

.ms-btn[title="Solo"].is-on {
    background: var(--accent-active);
    color: #05070a;
    border-color: var(--accent-active);
    box-shadow: 0 0 8px rgba(50, 255, 126, 0.35);
}

/* Peak Meter */
.ch-meter {
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--r-full);
    overflow: hidden;
    position: relative;
}

.ch-meter-fill {
    height: 100%;
    width: 0;
    background: var(--accent-active);
    border-radius: var(--r-full);
    transition: width 0.05s linear;
}

.ch-meter-fill.is-clip {
    background: var(--accent-danger);
}

/* Waveform Canvas / File load */
.file-upload {
    font-size: 10px;
    position: relative;
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload label {
    background: rgba(255, 255, 255, 0.04);
    padding: 6px var(--sp-2);
    border-radius: var(--r-sm);
    border: 1px solid var(--border);
    cursor: pointer;
    display: block;
    text-align: center;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    text-transform: uppercase;
    transition: all 0.2s;
}

.file-upload label:hover {
    background: var(--accent);
    color: #05070a;
    border-color: var(--accent);
    box-shadow: 0 0 8px rgba(0, 245, 255, 0.3);
}

.file-upload.is-loading label {
    border-color: var(--accent-warn);
    color: var(--accent-warn);
}

.file-upload.is-loaded label {
    border-color: var(--accent-active);
    color: var(--accent-active);
}

.file-upload.is-error label {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.waveform {
    display: block;
    width: 100%;
    height: 30px;
    margin-top: 6px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
}

/* DSP Knobs grid */
.dsp-controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-2);
    align-items: center;
}

/* --- Sequencer Steps Grid --- */
.steps {
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    gap: 4px;
}

.steps[data-step-count="32"] {
    grid-template-columns: repeat(32, 1fr);
    gap: 2px;
}

.steps[data-step-count="64"] {
    grid-template-columns: repeat(64, 1fr);
    gap: 1px;
}

.step {
    position: relative;
    height: 34px;
    background-color: var(--step-off);
    border: 1px solid var(--step-border);
    border-radius: var(--r-sm);
    cursor: pointer;
    overflow: hidden;
    transition: border-color 0.1s, background-color 0.1s;
    user-select: none;
    -webkit-user-select: none;
}

.step:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background-color: rgba(255, 255, 255, 0.05);
}

.steps[data-step-count="32"] .step { height: 28px; }
.steps[data-step-count="64"] .step { height: 24px; }

/* Velocity fill bar inside step */
.step-fill {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 0;
    background-color: var(--ch-color, var(--step-on));
    opacity: 0.65;
    pointer-events: none;
}

.step:not(.active) .step-fill {
    display: none;
}

/* Step sub-beat division markers */
.step:nth-child(4n+1) {
    border-left: 2px solid var(--beat-marker);
}

.step.active {
    border-color: rgba(255, 255, 255, 0.35);
}

/* Glowing running playhead */
.step.playing {
    background-color: rgba(255, 255, 255, 0.1) !important;
    border-color: #fff !important;
    box-shadow: inset 0 0 10px #fff;
    z-index: 2;
}

.step.playing .step-fill {
    opacity: 0.95;
    background-color: var(--accent-active);
}

/* Probability indicator */
.step.prob .step-fill {
    opacity: 0.3;
}

.step.prob::after {
    content: '';
    position: absolute;
    top: 3px;
    right: 3px;
    width: 4px;
    height: 4px;
    border-radius: var(--r-full);
    background: var(--accent);
    box-shadow: 0 0 4px var(--accent);
}

/* Accent step outline */
.step.accent {
    border-color: var(--accent-warn);
    box-shadow: inset 0 0 0 1px var(--accent-warn);
}

/* Ratchet indicator */
.step.ratchet::before {
    content: attr(data-ratchet);
    position: absolute;
    top: 1px;
    left: 3px;
    font-size: 8px;
    line-height: 1;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--accent-active);
    pointer-events: none;
}

/* Microtiming cues */
.step.micro-early {
    border-left: 3px solid var(--accent-active) !important;
}

.step.micro-late {
    border-right: 3px solid var(--accent-active) !important;
}

/* Gate length indicator */
.step.gated {
    border-bottom: 3px solid var(--accent) !important;
}

/* Highlighted target step (Step Inspector target) */
.step.selected {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    z-index: 3;
    box-shadow: 0 0 8px rgba(0, 245, 255, 0.4);
}

/* --- SVG Rotary Knobs Styling --- */
.knob-container-outer {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 10px;
    color: var(--text-main);
    width: 100%;
    margin: 6px 0;
}

.knob-wrapper {
    position: relative;
    width: 36px;
    height: 36px;
    cursor: ns-resize;
    user-select: none;
}

.knob-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.knob-track {
    fill: none;
    stroke: rgba(255, 255, 255, 0.05);
    stroke-width: 3.5;
}

.knob-fill {
    fill: none;
    stroke-width: 3.5;
    stroke-linecap: round;
    transform: rotate(135deg);
    transform-origin: 20px 20px;
    filter: drop-shadow(0 0 2px rgba(0, 245, 255, 0.2));
}

.knob-pointer-group {
    transform-origin: 20px 20px;
    transition: transform 0.05s linear;
}

.knob-pointer {
    stroke: #fff;
    stroke-width: 3;
}

.knob-label {
    margin-top: 4px;
    font-size: 9px;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-align: center;
}

.knob-value {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--accent);
    margin-top: 1px;
    text-align: center;
}

/* --- Inspectors (Step & Channel parameters) --- */
.inspector-panel {
    margin-top: var(--sp-2);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border);
}

.inspector {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--sp-4);
    padding: var(--sp-3) var(--sp-4);
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--r-md);
    border: 1px solid var(--border);
}

.inspector-head {
    display: flex;
    flex-direction: column;
    min-width: 110px;
}

.inspector-title {
    color: var(--text-dim);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.inspector-target {
    color: var(--accent);
    font-weight: 800;
    font-size: 16px;
    font-family: var(--font-mono);
    margin-top: var(--sp-1);
    text-shadow: var(--accent-glow);
}

/* Knob parameter alignment inside inspectors */
.inspector .knob-container-outer {
    width: 68px;
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 4px;
    border-radius: var(--r-md);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.inspector-accent {
    align-self: center;
    padding: 10px 14px;
}

.inspector-accent.is-on {
    background: var(--accent-warn);
    color: #05070a;
    border-color: var(--accent-warn);
    box-shadow: 0 0 10px rgba(255, 159, 26, 0.35);
}

.is-disabled {
    opacity: 0.3;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

/* Channel Inspector specific grid spacing */
.chan-inspector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
}

/* Segmented controls (Buttons list representing enums) */
.seg-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: rgba(0, 0, 0, 0.2);
    padding: 6px 10px;
    border-radius: var(--r-md);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.seg-group .value-control-num {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.seg-btns {
    display: flex;
    gap: 2px;
}

.seg-btn {
    padding: 5px 8px;
    font-size: 10px;
    min-width: 44px;
}

.seg-btn.is-active {
    background: var(--accent);
    color: #05070a;
    border-color: var(--accent);
    box-shadow: 0 0 8px rgba(0, 245, 255, 0.25);
}

/* --- Master Effects Bus Section --- */
.master-section {
    margin-top: var(--sp-2);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border);
}

.master-panel {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-4);
    align-items: flex-start;
}

.master-group {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-4);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    background: rgba(0, 0, 0, 0.15);
}

.master-group .group-label {
    width: 100%;
    margin-bottom: 6px;
    font-size: 10px;
    color: var(--text-dim);
    border-left: 2px solid var(--accent);
    padding-left: var(--sp-2);
}

/* master panel knobs sizing */
.master-group .knob-container-outer {
    width: 72px;
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 4px;
    border-radius: var(--r-md);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.fx-toggle {
    align-self: center;
    padding: 8px 14px;
    font-size: 11px;
}

.fx-toggle.is-on {
    background: var(--accent-active);
    color: #05070a;
    border-color: var(--accent-active);
    box-shadow: 0 0 10px rgba(50, 255, 126, 0.3);
}

.panic-btn {
    align-self: center;
    border-color: var(--accent-danger);
    color: var(--accent-danger);
    font-weight: 700;
}

.panic-btn:hover:not(:disabled) {
    background: var(--accent-danger);
    color: #05070a;
    box-shadow: 0 0 12px rgba(255, 0, 85, 0.4);
}

/* Master Stereo Meter */
.master-meter {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 140px;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px var(--sp-3);
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    align-self: center;
}

.meter-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--r-full);
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(to right, var(--accent-active) 80%, var(--accent-warn) 95%, var(--accent-danger) 100%);
    border-radius: var(--r-full);
    transition: width 0.05s linear;
}

.meter-fill.is-clip {
    background: var(--accent-danger);
    box-shadow: 0 0 8px var(--accent-danger);
}

.meter-gr {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 2px;
}

/* Labeled selectors (Dropdown blocks) */
.value-control {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: rgba(0, 0, 0, 0.2);
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--r-md);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.value-control label {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.select-control {
    background: rgba(0, 0, 0, 0.4);
    color: var(--accent);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: 6px;
    font-family: var(--font-sans);
    font-size: 12px;
    outline: none;
    cursor: pointer;
}

/* --- MIDI panel --- */
.midi-section {
    margin-top: var(--sp-2);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border);
}

.midi-panel {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--sp-4);
}

/* --- Fullscreen Engine Initialization Overlay --- */
#init-overlay {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at center, #0e1628 0%, #050810 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.init-box {
    text-align: center;
    max-width: 480px;
    padding: var(--sp-5);
    background: rgba(18, 24, 38, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--r-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
}

.init-title {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: 6px;
    margin-bottom: var(--sp-1);
    color: var(--text-main);
    font-family: var(--font-sans);
}

.init-title span {
    color: var(--accent);
    text-shadow: var(--accent-glow);
    font-family: var(--font-mono);
}

.init-sub {
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: var(--sp-5);
    letter-spacing: 1px;
}

.btn-init {
    font-size: 18px;
    padding: 16px 36px;
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 245, 255, 0.03);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.1);
}

.btn-init:hover:not(:disabled) {
    background: var(--accent);
    color: #05070a;
    box-shadow: 0 0 25px rgba(0, 245, 255, 0.45);
}

.init-error {
    color: var(--accent-danger);
    margin-top: var(--sp-4);
    font-size: 12px;
}

/* --- MIDI Learn Overlay --- */
.midi-learn-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 7, 10, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.25s ease;
}

.midi-learn-overlay.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.midi-learn-content {
    background: rgba(20, 24, 33, 0.9);
    border: 1px solid var(--accent);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.25);
    padding: var(--sp-6) var(--sp-8);
    border-radius: var(--r-lg);
    text-align: center;
    max-width: 400px;
    width: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-3);
}

.midi-learn-title {
    color: var(--accent);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-shadow: var(--accent-glow);
    margin: 0;
}

.midi-learn-text {
    color: var(--text-dim);
    font-size: 13px;
    margin: 5px 0;
}

.midi-learn-param-name {
    font-family: var(--font-mono);
    color: var(--accent-active);
    font-size: 18px;
    font-weight: 700;
    background: rgba(50, 255, 126, 0.1);
    padding: 8px 16px;
    border-radius: var(--r-md);
    border: 1px solid rgba(50, 255, 126, 0.2);
    box-shadow: 0 0 10px rgba(50, 255, 126, 0.05);
    margin: 10px 0;
}

.learn-cancel-btn {
    min-width: 100px;
    padding: 10px 20px;
}

/* --- Master Visualizer Canvas --- */
.master-visualizer-canvas {
    width: 160px;
    height: 36px;
    background: rgba(0, 0, 0, 0.35);
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    align-self: center;
    box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.6);
}

/* --- Step Modulation Panel & Editor --- */
.modulation-panel {
    margin-top: var(--sp-2);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border);
}

.modulation-editor {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--r-md);
    border: 1px solid var(--border);
}

.mod-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mod-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--text-dim);
}

.mod-bars-container {
    display: flex;
    gap: 6px;
    height: 90px;
    align-items: flex-end;
    padding: 10px 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--r-md);
    border: 1px solid rgba(255, 255, 255, 0.02);
    user-select: none;
    -webkit-user-select: none;
}

.mod-bar-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.mod-bar-col.is-inactive-step {
    opacity: 0.45;
}

.mod-bar-bg {
    width: 100%;
    flex: 1;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--r-sm);
    border: 1px solid rgba(255, 255, 255, 0.02);
    position: relative;
    overflow: hidden;
}

.mod-bar-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, var(--accent), var(--accent-active));
    border-radius: var(--r-sm);
    box-shadow: 0 0 8px rgba(0, 245, 255, 0.3);
    transition: height 0.05s linear;
}

/* Color schemes per parameter tab */
.mod-bars-container.is-velocity .mod-bar-fill {
    background: linear-gradient(to top, #ff7b72, #db61a2);
    box-shadow: 0 0 8px rgba(255, 123, 114, 0.3);
}

.mod-bars-container.is-probability .mod-bar-fill {
    background: linear-gradient(to top, #58a6ff, #bc8cff);
    box-shadow: 0 0 8px rgba(88, 166, 255, 0.3);
}

.mod-bars-container.is-ratchet .mod-bar-fill {
    background: linear-gradient(to top, #3fb950, #f2cc60);
    box-shadow: 0 0 8px rgba(63, 185, 80, 0.3);
}

.mod-bar-val {
    font-size: 8px;
    font-family: var(--font-mono);
    color: var(--text-dim);
}

.mod-bar-col:hover .mod-bar-bg {
    border-color: rgba(255, 255, 255, 0.15);
}