@font-face {
    font-family: 'DejaVu Sans';
    src: url('../fonts/DejaVuSans.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'DejaVu Sans';
    src: url('../fonts/DejaVuSans-Bold.ttf') format('truetype');
    font-weight: bold;
}

/* --- Reset & base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-dark: #1d2021;
    --bg: #282828;
    --bg-light: #32302f;
    --bg-button: #3c3836;
    --bg-hover: #504945;
    --border: #504945;
    --border-dim: #3c3836;
    --text: #ebdbb2;
    --text-dim: #a89984;
    --text-muted: #665c54;
    --accent: #fabd2f;
    --accent-dark: #d79921;
    --blue: #458588;
    --red: #fb4934;
    --purple: #b16286;
    --green: #98971a;

    --tab-height: 52px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);

    touch-action: manipulation;
}

html {
    height: 100%;
    overflow-y: scroll;
    scrollbar-width: none;
    overscroll-behavior: none;
}
html::-webkit-scrollbar { display: none; }

body {
    min-height: calc(100% + 1px);
    font-family: 'DejaVu Sans', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
button:focus:not(:focus-visible) { outline: none; }

/* --- Global play/stop button --- */
#global-play-stop {
    display: block;
    flex-shrink: 0;
    width: 100%;
    padding: 14px;
    background: #2a6e2a;
    color: #fff;
    border: none;
    border-bottom: 1px solid var(--border);
    font-family: inherit;
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 1px;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    transition: background 0.1s;
}
#global-play-stop:active { background: #3a8a3a; }
#global-play-stop.playing { background: #8b2020; }
#global-play-stop.playing:active { background: #a53030; }

/* --- Metronome bar --- */
#metronome-bar {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 6px 12px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}
#metronome-row-1 {
    display: flex;
    align-items: center;
    gap: 8px;
}
#metronome-tap {
    flex: 0 0 auto;
    padding: 10px 20px;
    background: var(--bg-button);
    color: var(--text);
    border: 2px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    transition: background 0.08s, border-color 0.08s;
}
#metronome-tap:active { background: var(--bg-hover); }
#metronome-tap.blink {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
    animation: metronome-pulse var(--beat-ms, 500ms) infinite;
}
@keyframes metronome-pulse {
    0% {
        background: var(--accent);
        border-color: var(--accent);
        color: var(--bg);
        animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
    }
    99% {
        background: color-mix(in srgb, var(--accent) 10%, var(--bg-button));
        border-color: color-mix(in srgb, var(--accent) 10%, transparent);
        color: color-mix(in srgb, var(--bg) 10%, var(--text));
    }
    100% {
        background: var(--accent);
        border-color: var(--accent);
        color: var(--bg);
    }
}

#bpm-label {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 10px;
    font-weight: bold;
    color: var(--text-dim);
    white-space: nowrap;
}
#bpm-input {
    width: 52px;
    padding: 6px 4px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 13px;
    font-weight: bold;
    text-align: center;
    -moz-appearance: textfield;
}
#bpm-input::-webkit-inner-spin-button,
#bpm-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

#fullscreen-toggle {
    flex: 0 0 auto;
    padding: 10px 10px;
    background: var(--bg-button);
    color: var(--text-muted);
    border: 1px solid var(--border-dim);
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    line-height: 1;
}
#fullscreen-toggle:active { background: var(--bg-hover); }
#fullscreen-toggle.active {
    color: var(--accent);
    border-color: var(--accent-dark);
}

/* --- MIDI selectors --- */
#midi-row {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}
.hidden { display: none !important; }
/* `hidden` attr needs to beat the ID-specific display rules above */
#global-play-stop[hidden], #metronome-tap[hidden], #bpm-label[hidden] { display: none; }
.midi-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-weight: bold;
    color: var(--text-dim);
    white-space: nowrap;
}
#midi-out-select,
#midi-in-select {
    padding: 6px 4px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 11px;
    font-weight: bold;
    max-width: 140px;
}
#midi-refresh {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    padding: 0;
    background: var(--bg-button);
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
    line-height: 1;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
}
#midi-refresh:active { background: var(--bg-hover); color: var(--accent); }
#midi-status {
    font-size: 10px;
    font-family: ui-monospace, 'SF Mono', Menlo, monospace;
    color: var(--text-muted);
    text-align: center;
    padding: 2px 0;
    letter-spacing: 0.02em;
}
#midi-status.error { color: var(--red); }
#metronome-tap.sync-locked {
    opacity: 0.4;
    pointer-events: none;
}
#bpm-label.sync-locked {
    opacity: 0.6;
    pointer-events: none;
}

/* --- Filter checkboxes (OUT / IN, independent) --- */
#filter-rows {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-top: 2px;
}
.filter-row {
    display: flex;
    align-items: center;
    gap: 6px;
}
.filter-row-label {
    flex: 0 0 28px;
    font-size: 10px;
    font-weight: bold;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-align: left;
}
.filter-chk {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 4px 4px;
    background: var(--bg-button);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 11px;
    font-weight: bold;
    color: var(--text-dim);
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
}
.filter-chk input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
    flex-shrink: 0;
}
.filter-chk:has(input:checked) {
    color: var(--accent);
    border-color: var(--accent-dark);
}

/* --- App shell --- */
#app {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg);
}

#panel-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.panel {
    display: none;
    padding: 10px;
    min-height: 100%;
}
.panel.active { display: block; }

/* --- Bottom tab bar --- */
#tabbar {
    display: flex;
    flex-shrink: 0;
    height: var(--tab-height);
    padding-bottom: var(--safe-bottom);
    background: var(--bg-dark);
    border-top: 1px solid var(--border);
}
.tab {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-dim);
    font-family: inherit;
    font-size: 11px;
    font-weight: bold;
    letter-spacing: 0.5px;
    cursor: pointer;
    padding: 8px 2px;
    transition: color 0.15s, background 0.15s;
}
.tab:active { background: var(--bg-button); }
.tab.active { color: var(--accent); }

/* --- Config panel overlay --- */
.panel-config {
    display: none;
    padding: 16px 12px;
}
.panel-config.active { display: block; }

.config-section {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-dim);
}
.config-section:last-child { border-bottom: none; }
.config-label {
    font-size: 11px;
    font-weight: bold;
    color: var(--text-dim);
    margin-bottom: 10px;
}
.config-stepper-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 6px 0;
    font-size: 13px;
    font-weight: bold;
    color: var(--text-dim);
}
.config-stepper {
    display: flex;
    align-items: center;
    gap: 4px;
}
.config-stepper .num-stepper {
    width: 44px;
    height: 44px;
    font-size: 18px;
    border-radius: 6px;
}
.config-stepper input[type="number"] {
    width: 56px;
    padding: 10px 4px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    -moz-appearance: textfield;
}
.config-stepper input[type="number"]::-webkit-inner-spin-button,
.config-stepper input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.num-stepper {
    flex: 0 0 auto;
    width: 28px;
    height: 32px;
    padding: 0;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    line-height: 1;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}
.num-stepper:active { background: var(--bg-hover); }

.panel-title {
    font-size: 12px;
    font-weight: bold;
    color: var(--accent);
    margin-bottom: 8px;
    padding-bottom: 4px;
}

/* --- Mode bar --- */
.mode-bar {
    display: flex;
    gap: 4px;
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg);
    padding-top: 10px;
    padding-bottom: 10px;
    margin-top: -10px;
}
.mode-btn {
    flex: 1;
    padding: 10px 4px;
    background: var(--bg-button);
    color: var(--text);
    border: 2px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    transition: background 0.08s, border-color 0.08s;
}
.mode-btn:active { background: var(--bg-hover); }
.mode-btn.mode-delete.active { background: var(--red); color: var(--bg); border-color: var(--red); }
.mode-btn.mode-copy.active   { background: var(--purple); color: var(--text); border-color: var(--purple); }
.mode-btn.mode-name.active   { background: var(--green); color: var(--bg); border-color: var(--green); }
.mode-btn.mode-prog.active   { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.mode-btn.mode-color.active  {
    background: linear-gradient(90deg, var(--red), var(--accent), var(--green), var(--blue), var(--purple));
    color: var(--bg);
    border-color: var(--text);
}
.mode-btn.mode-play.active   { background: var(--blue); color: var(--text); border-color: var(--blue); }

/* --- Grid --- */
.grid-wrap {
    display: grid;
    grid-template-columns: repeat(var(--cols, 4), 1fr);
    gap: 6px;
}
.cell-btn {
    position: relative;
    aspect-ratio: 1.4 / 1;
    background: var(--bg-button);
    color: var(--text);
    border: 2px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    transition: background 0.08s, transform 0.08s, border-color 0.08s;
    overflow: hidden;
    padding: 4px;
}
.cell-btn:active { background: var(--bg-hover); }
.cell-btn.cell-empty {
    color: var(--text-muted);
    background: var(--bg-light);
    border-style: dashed;
}
.cell-btn.cell-copy-src {
    border-color: var(--purple);
    box-shadow: inset 0 0 0 2px var(--purple);
}
.cell-btn.cell-delete-armed {
    border-color: var(--red);
    animation: delete-blink 0.4s ease-in-out infinite;
}
.cell-btn.cell-has-error {
    border-bottom-color: var(--red);
}
.cell-btn.cell-flash {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}
.cell-name {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.2;
}
.cell-trg-dot {
    position: absolute;
    bottom: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--blue);
}
@keyframes delete-blink {
    0%, 100% { box-shadow: inset 0 0 0 2px var(--red); }
    50%      { box-shadow: inset 0 0 0 0 var(--red); }
}

/* --- NAME modal --- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 2000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}
.name-modal {
    width: 100%;
    max-width: 600px;
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    border-radius: 12px 12px 0 0;
    padding: 14px 14px calc(14px + var(--safe-bottom));
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.name-modal-title {
    font-size: 11px;
    font-weight: bold;
    color: var(--green);
    letter-spacing: 0.05em;
}
.name-modal-input {
    padding: 12px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 16px;
    font-weight: bold;
    outline: none;
}
.name-modal-input:focus { border-color: var(--green); }
.name-modal-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.name-modal-counter {
    font-size: 11px;
    color: var(--text-muted);
}
.name-modal-actions {
    display: flex;
    gap: 6px;
}
.name-modal-cancel,
.name-modal-save {
    padding: 10px 16px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
}
.name-modal-save {
    background: var(--green);
    color: var(--bg);
    border-color: var(--green);
}

/* --- Per-cell color modal --- */
.color-cell-modal {
    width: 100%;
    max-width: 600px;
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    border-radius: 12px 12px 0 0;
    padding: 14px 14px calc(14px + var(--safe-bottom));
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.color-cell-title {
    font-size: 11px;
    font-weight: bold;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}
.color-cell-preview-wrap {
    display: flex;
    justify-content: center;
}
.color-cell-preview {
    min-width: 120px;
    aspect-ratio: 1.4 / 1;
    padding: 8px;
    background: var(--bg-button);
    color: var(--text);
    border: 2px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.color-cell-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.color-cell-label {
    flex: 1;
    font-size: 13px;
    font-weight: bold;
    color: var(--text);
}
.color-cell-row input[type="color"] {
    appearance: none;
    -webkit-appearance: none;
    width: 56px;
    height: 36px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
}
.color-cell-row input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-cell-row input[type="color"]::-webkit-color-swatch { border: none; border-radius: 3px; }
.color-cell-row input[type="color"]::-moz-color-swatch { border: none; border-radius: 3px; }
.color-cell-clear {
    width: 36px;
    height: 36px;
    background: var(--bg-button);
    color: var(--red);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 16px;
    font-weight: bold;
    line-height: 1;
    cursor: pointer;
}
.color-cell-clear:active { background: var(--bg-hover); }
.color-cell-actions {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
}
.color-cell-cancel,
.color-cell-save {
    padding: 10px 16px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
}
.color-cell-save {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

/* --- PROG editor overlay --- */
.editor-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: var(--bg);
    display: flex;
    flex-direction: column;
}
.editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}
.editor-title {
    font-size: 12px;
    font-weight: bold;
    color: var(--accent);
    letter-spacing: 0.05em;
}
.editor-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    background: var(--bg-dark);
}
.editor-gutter {
    flex: 0 0 32px;
    overflow: hidden;
    padding: 8px 0;
    background: var(--bg);
    color: var(--text-muted);
    font-family: ui-monospace, 'SF Mono', Menlo, monospace;
    font-size: 13px;
    line-height: 1.5;
    text-align: right;
    user-select: none;
    -webkit-user-select: none;
    border-right: 1px solid var(--border-dim);
}
.gutter-line {
    padding: 0 6px;
    height: 1.5em;
}
.gutter-line.gutter-error {
    background: var(--red);
    color: var(--bg);
}
.editor-textarea {
    flex: 1;
    padding: 8px;
    background: var(--bg-dark);
    color: var(--text);
    border: none;
    outline: none;
    font-family: ui-monospace, 'SF Mono', Menlo, monospace;
    font-size: 13px;
    line-height: 1.5;
    resize: none;
    -webkit-text-size-adjust: 100%;
}

.editor-status {
    padding: 6px 10px calc(6px + var(--safe-bottom));
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-dark);
    border-top: 1px solid var(--border-dim);
}
.editor-status-error {
    color: var(--red);
    font-weight: bold;
}

.editor-toolbar {
    display: flex;
    gap: 6px;
    padding: 10px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    align-items: center;
}
.editor-toolbar button {
    padding: 10px 14px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
}
.editor-toolbar button:active { background: var(--bg-hover); }
.editor-spacer { flex: 1; }
.editor-save {
    background: var(--accent) !important;
    color: var(--bg) !important;
    border-color: var(--accent) !important;
}

.editor-help-panel {
    position: absolute;
    inset: 0;
    background: var(--bg);
    overflow-y: auto;
    padding: 16px 16px calc(16px + var(--safe-bottom));
    z-index: 10;
}
.editor-help-close {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 36px;
    height: 36px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 22px;
    font-weight: bold;
    line-height: 1;
    cursor: pointer;
    z-index: 11;
}
.editor-help-close:active { background: var(--bg-hover); }

/* --- Help content --- */
.help-content {
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}
.help-content h2 {
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.05em;
    margin: 16px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-dim);
}
.help-content h2:first-child { margin-top: 0; }
.help-content h3 {
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    margin: 10px 0 4px;
}
.help-content p { margin-bottom: 8px; }
.help-content ul {
    margin-bottom: 8px;
    padding-left: 18px;
}
.help-content li {
    margin-bottom: 4px;
}
.help-content code {
    background: var(--bg-light);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: ui-monospace, 'SF Mono', Menlo, monospace;
    font-size: 12px;
}
.help-content pre {
    background: var(--bg-light);
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid var(--border-dim);
    font-family: ui-monospace, 'SF Mono', Menlo, monospace;
    font-size: 12px;
    overflow-x: auto;
    margin-bottom: 8px;
}

/* --- SAVE / LOAD panels --- */
.save-row {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}
.save-input {
    flex: 1;
    padding: 10px 8px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    outline: none;
}
.save-input:focus { border-color: var(--accent); }
.save-confirm {
    padding: 10px 16px;
    background: var(--accent);
    color: var(--bg);
    border: 1px solid var(--accent);
    border-radius: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
}
.save-confirm:active { background: var(--accent-dark); }

.save-empty {
    padding: 12px;
    color: var(--text-muted);
    font-style: italic;
    font-size: 13px;
    text-align: center;
}
.save-list, .load-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.save-item-row {
    display: flex;
    gap: 6px;
    align-items: center;
}
.save-item-name {
    flex: 1;
    padding: 10px;
    background: var(--bg-light);
    color: var(--text);
    border: 1px solid var(--border-dim);
    border-radius: 6px;
    font-size: 14px;
    font-weight: bold;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: left;
}
.save-item-press {
    cursor: pointer;
    font-family: inherit;
    transition: background 0.1s, border-color 0.1s;
}
.save-item-press:active { background: var(--bg-hover); }
.save-item-press.reset-pending {
    background: var(--bg-button);
    border-color: var(--accent);
    color: var(--accent);
    animation: reset-blink 0.4s ease-in-out infinite;
}
@keyframes reset-blink {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.2; }
}

.save-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}
.save-item-overwrite,
.save-item-dl,
.save-item-del {
    padding: 10px 12px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    flex-shrink: 0;
}
.save-item-dl {
    color: var(--accent);
    font-size: 16px;
    line-height: 1;
    padding: 10px;
    min-width: 40px;
}
.save-item-del { color: var(--red); }

.upload-row {
    display: flex;
    margin-bottom: 8px;
}
.upload-btn {
    flex: 1;
    padding: 12px;
    background: var(--bg-button);
    color: var(--accent);
    border: 1px solid var(--accent-dark);
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
}
.upload-btn:active { background: var(--bg-hover); }
.upload-error {
    padding: 8px 10px;
    margin-bottom: 8px;
    background: var(--bg-dark);
    border: 1px solid var(--red);
    border-radius: 6px;
    color: var(--red);
    font-size: 12px;
    font-weight: bold;
}
.load-item {
    width: 100%;
    padding: 14px;
    background: var(--bg-button);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    text-align: left;
}
.load-item:active { background: var(--bg-hover); }
.just-flashed {
    border-color: var(--accent) !important;
    box-shadow: 0 0 6px var(--accent);
}

/* --- Color scheme panel --- */
.color-schemes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.scheme-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 8px;
    background: var(--bg-button);
    border: 2px solid var(--border-dim);
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 11px;
    font-weight: bold;
    color: var(--text-dim);
}
.scheme-btn.active {
    border-color: var(--accent);
    color: var(--accent);
}
.scheme-preview {
    display: flex;
    gap: 3px;
    flex-wrap: nowrap;
}
.scheme-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}
.scheme-dot.scheme-bg { border: 1px solid var(--border); }
.scheme-name {
    text-align: center;
    line-height: 1.2;
    word-break: break-word;
}

.color-config-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.color-config-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-dim);
}
.color-config-group:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}
.color-config-group-title {
    font-size: 11px;
    font-weight: bold;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}
.color-config-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 4px 0;
    cursor: pointer;
}
.color-config-row-label {
    font-size: 13px;
    color: var(--text);
    flex: 1 1 auto;
    min-width: 0;
}
.color-config-row input[type="color"] {
    appearance: none;
    -webkit-appearance: none;
    width: 44px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    flex: 0 0 auto;
}
.color-config-row input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-config-row input[type="color"]::-webkit-color-swatch { border: none; border-radius: 3px; }
.color-config-row input[type="color"]::-moz-color-swatch { border: none; border-radius: 3px; }
.color-reset-btn {
    margin-top: 8px;
    padding: 10px 12px;
    background: var(--bg-button);
    border: 2px solid var(--border-dim);
    border-radius: 8px;
    color: var(--text-dim);
    font-family: inherit;
    font-size: 11px;
    font-weight: bold;
    letter-spacing: 0.05em;
    cursor: pointer;
}
.color-reset-btn:active {
    border-color: var(--accent);
    color: var(--accent);
}

/* --- Responsive: larger screens --- */
@media (min-width: 601px) {
    #app { max-width: 900px; }
    .tab { font-size: 13px; }
}
@media (orientation: landscape) {
    #app { max-width: 50%; }
}
@media (orientation: landscape) and (max-height: 500px) {
    :root { --tab-height: 40px; }
    .panel { padding: 6px; }
    .cell-btn { font-size: 12px; }
    .mode-btn { padding: 6px 4px; font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
    .cell-btn.cell-delete-armed,
    #metronome-tap.blink { animation: none; }
}