/* ===================== Druk Wide (self-hosted) ===================== */

@font-face {
    font-family: 'Druk Wide';
    src: url('Druk/Druk Wide Medium.otf') format('opentype');
    font-weight: 500;
    font-style: normal;
}

@font-face {
    font-family: 'Druk Wide';
    src: url('Druk/Druk Wide Bold.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'Druk Wide';
    src: url('Druk/Druk Wide Heavy.otf') format('opentype');
    font-weight: 800;
    font-style: normal;
}

@font-face {
    font-family: 'Druk Wide';
    src: url('Druk/Druk Wide Super.otf') format('opentype');
    font-weight: 900;
    font-style: normal;
}

/* ===================== Brutalist Reset ===================== */

:root {
    --bg: #0a0a0a;
    --fg: #c8c8c8;
    --fg-dim: #555;
    --fg-mute: #333;
    --accent: #fff;
}

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

body {
    font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    background: var(--bg);
    color: var(--fg);
    min-height: 100vh;
}

/* ===================== Header ===================== */

header {
    text-align: center;
    padding: 2rem 1rem 0.5rem;
}

header h1 {
    font-family: 'Druk Wide', 'JetBrains Mono', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--fg-dim);
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* ===================== Mode Switcher ===================== */

.mode-switcher {
    display: flex;
    justify-content: center;
    gap: 0;
    margin: 0.5rem auto 0;
    max-width: 1200px;
    padding: 0 1.5rem;
}

.mode-tab {
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--fg-mute);
    border-bottom: none;
    background: transparent;
    color: var(--fg-dim);
    font-size: 0.7rem;
    font-weight: 400;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
}

.mode-tab + .mode-tab {
    border-left: none;
}

.mode-tab:hover {
    color: var(--fg);
}

.mode-tab.active {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

/* ===================== Training Panel ===================== */

#training-panel {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 1.5rem 2rem;
}

/* ===================== Panel Header ===================== */

.panel-header {
    height: 160px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 0.75rem;
}

.panel-header .controls {
    margin-bottom: 0;
}

/* ===================== BPM Control ===================== */

.bpm-control {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.bpm-label {
    font-size: 0.6rem;
    color: var(--fg-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 400;
}

.bpm-row {
    display: flex;
    align-items: center;
    gap: 0;
}

.bpm-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--fg-mute);
    background: transparent;
    color: var(--fg-dim);
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    padding: 0;
    line-height: 28px;
    text-align: center;
}

.bpm-btn:hover {
    color: var(--fg);
    border-color: var(--fg-dim);
}

.bpm-btn:active {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

.bpm-display {
    min-width: 48px;
    height: 28px;
    border-top: 1px solid var(--fg-mute);
    border-bottom: 1px solid var(--fg-mute);
    background: transparent;
    color: var(--fg);
    font-size: 0.9rem;
    font-family: inherit;
    text-align: center;
    line-height: 28px;
}

/* ===================== Transport Button ===================== */

.transport-wrap {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-self: flex-end;
}

.transport-btn {
    padding: 0.4rem 1.5rem;
    border: 1px solid var(--fg-mute);
    background: transparent;
    color: var(--fg);
    font-size: 0.8rem;
    font-weight: 500;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
}

.transport-btn:hover {
    border-color: var(--fg-dim);
    color: var(--accent);
}

.transport-btn.playing {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

/* ===================== Sound Toggle ===================== */

.sound-toggle {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.7rem;
    color: var(--fg-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 400;
    cursor: pointer;
    align-self: flex-end;
}

.sound-toggle input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border: 1px solid var(--fg-mute);
    background: transparent;
    cursor: pointer;
    position: relative;
}

.sound-toggle input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.sound-toggle input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 4px;
    width: 4px;
    height: 8px;
    border: solid var(--bg);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* ===================== Voicing Now (big label) ===================== */

.voicing-now {
    text-align: center;
    font-family: 'Druk Wide', 'JetBrains Mono', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 0.75rem 0 0;
}

/* ===================== Voicing Indicator ===================== */

.voicing-indicator {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 1.5rem;
    padding: 0.6rem 0 0;
}

.voicing-count {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

.voicing-desc {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--fg-dim);
    letter-spacing: 1px;
}

/* ===================== Reference Panel ===================== */

#reference-panel {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 1.5rem 2rem;
}

/* ===================== Controls Bar ===================== */

.controls {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
    justify-content: center;
    align-items: baseline;
    margin-bottom: 1.5rem;
    padding: 0;
    background: none;
    border: none;
}

.controls > * {
    padding: 0.6rem 1rem;
    border-left: 1px solid var(--fg-mute);
}

.controls > *:first-child {
    border-left: none;
}

.controls label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.6rem;
    color: var(--fg-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 400;
}

/* ===================== Custom Selects ===================== */

.custom-select {
    position: relative;
    min-width: 120px;
}

.custom-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    padding: 0.4rem 0;
    border: none;
    border-bottom: 1px solid var(--fg-mute);
    background: transparent;
    color: var(--fg);
    font-size: 0.9rem;
    font-weight: 400;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
}

.custom-select-trigger::after {
    content: '';
    width: 8px;
    height: 5px;
    flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5'%3E%3Cpath d='M0 0l4 4 4-4' stroke='%23555' fill='none' stroke-width='1'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
}

.custom-select-trigger:hover {
    border-bottom-color: var(--fg-dim);
    color: var(--accent);
}

.custom-select.open .custom-select-trigger {
    border-bottom-color: var(--accent);
    color: var(--accent);
}

.custom-select.open .custom-select-trigger::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5'%3E%3Cpath d='M0 4l4-4 4 4' stroke='%23fff' fill='none' stroke-width='1'/%3E%3C/svg%3E");
}

.custom-select-options {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 100%;
    background: var(--bg);
    border: 1px solid var(--fg-mute);
    z-index: 100;
    max-height: 240px;
    overflow-y: auto;
}

.custom-select.open .custom-select-options {
    display: block;
}

.custom-select-option {
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
    font-family: inherit;
    color: var(--fg-dim);
    cursor: pointer;
    white-space: nowrap;
}

.custom-select-option:hover {
    background: var(--accent);
    color: var(--bg);
}

.custom-select-option.selected {
    color: var(--accent);
}

/* ===================== String Toggles ===================== */

.string-toggles-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.string-toggles-label {
    font-size: 0.6rem;
    color: var(--fg-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 400;
}

.string-toggles {
    display: flex;
    gap: 1px;
    background: none;
    border: none;
    padding: 0;
}

.string-toggle {
    width: 32px;
    height: 32px;
    border: 1px solid var(--fg-mute);
    background: transparent;
    color: var(--fg-dim);
    font-size: 0.8rem;
    font-weight: 400;
    font-family: inherit;
    cursor: pointer;
    padding: 0;
    line-height: 32px;
    text-align: center;
}

.string-toggle:hover {
    color: var(--fg);
    border-color: var(--fg-dim);
}

.string-toggle.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg);
}

.string-toggle.active:hover {
    background: var(--fg);
    border-color: var(--fg);
    color: var(--bg);
}

/* ===================== Fretboard ===================== */

.fretboard-wrap {
    position: relative;
    height: 340px;
    overflow: hidden;
    border: 1px solid var(--fg-mute);
    margin: 1rem 0;
    background: var(--bg);
}

.fretboard-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* ===================== Overlay Labels ===================== */

.fb-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.fb-overlay .fb-string-label {
    position: absolute;
    transform: translateY(-50%);
    font-size: 11px;
    font-weight: 500;
    color: #fff;
    font-family: 'Druk Wide', 'JetBrains Mono', monospace !important;
}

.fb-overlay .fb-fret-number {
    position: absolute;
    transform: translateX(-50%);
    font-size: 10px;
    font-weight: 400;
    color: var(--fg-dim);
    font-family: 'Druk Wide', 'JetBrains Mono', monospace !important;
}

.fb-overlay .fb-fret-dot-label {
    position: absolute;
    transform: translateX(-50%);
    font-size: 18px;
    color: var(--fg-dim);
    letter-spacing: 3px;
}

.fb-overlay .fb-note-label {
    position: absolute;
    transform: translate(-50%, -40%);
    font-size: 9px;
    font-weight: 800;
    color: #000;
    font-family: 'Druk Wide', 'JetBrains Mono', monospace !important;
    text-shadow: none;
}

/* ===================== Note Info ===================== */

.note-info {
    text-align: center;
    padding: 0.75rem 1rem;
}

.note-info .scale-row {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
}

.note-info .scale-degree {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
}

.note-info .scale-degree .degree-name {
    font-family: 'Druk Wide', 'JetBrains Mono', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--fg-dim);
    letter-spacing: 1px;
}

.note-info .scale-degree .degree-num {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--fg-mute);
}

.note-info .scale-degree.triad .degree-name {
    font-weight: 700;
    color: var(--accent);
}

.note-info .scale-degree.triad .degree-num {
    color: var(--fg-dim);
}

/* ===================== Training Scale Bar ===================== */

.train-scale-bar {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 0.75rem 0;
    flex-wrap: wrap;
}

.train-scale-bar .scale-chord {
    font-family: 'Druk Wide', 'JetBrains Mono', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--fg-mute);
    text-transform: uppercase;
}

.train-scale-bar .scale-chord.active {
    color: var(--accent);
}

/* ===================== Mobile ===================== */

@media (max-width: 768px) {
    .controls {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }

    .controls > * {
        border-left: none;
        border-bottom: 1px solid var(--fg-mute);
        padding: 0.6rem 0.75rem;
    }

    .controls > *:last-child {
        border-bottom: none;
    }

    .string-toggles-wrap {
        align-items: center;
    }

    .string-toggles {
        justify-content: center;
    }

    .fretboard-wrap {
        height: 280px;
    }
}