:root {
    --bg-body:      #0c0c14;
    --bg-wrapper:   #1a1a28;
    --bg-header:    #141420;
    --bg-panel:     #1e1e2e;
    --bg-control:   #252538;
    --accent:       #c8882a;
    --accent-dim:   rgba(200, 136, 42, 0.22);
    --green:        #2dbb66;
    --green-dim:    rgba(45, 187, 102, 0.18);
    --red:          #cc3b2b;
    --red-dim:      rgba(204, 59, 43, 0.18);
    --text:         #ccc8b8;
    --text-dim:     #6a6880;
    --border:       #2e2e44;
    --border-light: #3e3e58;
}

* {
    -webkit-user-select: none;
    box-sizing: border-box;
}

body, html {
    background: var(--bg-body);
    background-image: repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 3px,
        rgba(0,0,0,0.04) 3px,
        rgba(0,0,0,0.04) 4px
    );
    margin: 0;
    font-family: 'Courier New', Courier, monospace;
    min-height: 100vh;
}

#wrapper {
    width: 1160px;
    margin: 24px auto;
    background: var(--bg-wrapper);
    color: var(--text);
    position: relative;
    border: 1px solid var(--border);
    border-radius: 6px;
    box-shadow:
        inset 0 0 0 1px rgba(255,255,255,0.04),
        0 8px 40px rgba(0,0,0,0.7),
        0 0 80px rgba(0,0,0,0.4);
}

/* ── Header bar ──────────────────────────────────────────── */

#header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px 14px;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    border-radius: 6px 6px 0 0;
}

header {
    font-size: 26px;
    font-weight: bold;
    letter-spacing: 0.18em;
    color: var(--accent);
    text-shadow: 0 0 20px rgba(200,136,42,0.45);
    display: block;
    line-height: 1;
}

#brand-sub {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.12em;
    margin-top: 5px;
    text-transform: uppercase;
}

/* ── Controls row (inside header-bar) ───────────────────── */

#controls {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
}

#fw-info {
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    padding-left: 14px;
    border-left: 1px solid var(--border);
}

.block {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--border);
    padding: 5px 10px;
    background: var(--bg-control);
    font-size: 11px;
    letter-spacing: 0.06em;
    border-radius: 3px;
    white-space: nowrap;
}

.stop {
    background: var(--red-dim);
    border-color: var(--red);
    color: #ff6655;
    cursor: pointer;
    text-decoration: none;
}

.stop:hover {
    background: rgba(204, 59, 43, 0.35);
}

.status {
    background: var(--red-dim);
    border-color: var(--red);
    color: #ff6655;
}

.status::before {
    content: '●';
    margin-right: 5px;
    animation: led-blink 1.2s step-end infinite;
}

@keyframes led-blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.15; }
}

.status-ok {
    background: var(--green-dim);
    border-color: var(--green);
    color: var(--green);
}

.status-ok::before {
    content: '●';
    margin-right: 5px;
    animation: none;
}

/* ── Presets drawer ──────────────────────────────────────── */

#pianowrapper {
    clear: both;
    margin-left: 10px;
    padding-top: 8px;
}

#presets {
    position: absolute;
    top: 0;
    right: -145px;
    width: 125px;
    padding: 20px 16px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-left: none;
    border-radius: 0 6px 6px 0;
}

#preset-list {
    margin-top: 12px;
}

#presets #preset-list div {
    padding: 8px 4px;
    font-family: monospace;
    font-size: 11px;
    cursor: pointer;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
    letter-spacing: 0.05em;
}

#presets #preset-list div:hover {
    color: var(--accent);
}

#presets h3 {
    text-align: center;
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin: 0;
}

#preset-list a {
    font-weight: bold;
    text-decoration: underline;
    color: var(--accent);
}

/* ── Synth panel area ────────────────────────────────────── */

.knob-clean {
    width: 120px;
    height: 120px;
    display: inline-block;
    margin: 1em;
    position: relative;
}

button {
    padding: 6px;
}

.panel {
    display: inline-block;
    width: 160px;
    position: relative;
}

.panel label {
    margin: 14px 0 8px;
    display: block;
    color: var(--text-dim);
    font-size: 10px;
    text-align: center;
    width: 150px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.main {
    padding: 10px 0 10px 24px;
}

.main fieldset {
    width: 500px;
    padding-left: 10px;
    float: left;
    margin: 16px 0 16px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: rgba(0,0,0,0.14);
}

.main fieldset legend {
    padding: 0 12px;
    font-weight: bold;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
    margin-left: 8px;
}

.wave-icon {
    fill: var(--accent);
    width: 20px;
    position: absolute;
}

.sine     { top: 70px;  left: -4px;  width: 15px; }
.square   { top: 40px;  left: 64px; }
.sawtooth { top: 72px;  right: 6px; }
.triangle { top: 150px; right: 8px; }

.off {
    color: var(--text-dim);
    position: absolute;
    top: 156px; left: -4px;
    font-size: 8px;
}

/* ── Footer ─────────────────────────────────────────────── */

footer {
    clear: both;
    text-align: center;
    padding: 10px 24px;
    font-size: 10px;
    color: var(--text-dim);
    border-top: 1px solid var(--border);
    background: var(--bg-header);
    letter-spacing: 0.1em;
    border-radius: 0 0 6px 6px;
}

select {
    background: var(--bg-control);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Courier New', monospace;
    font-size: 11px;
    padding: 1px 4px;
    border-radius: 2px;
}