/**
 * ==============================================================================
 * Acoustic Keystroke Snooping - Ground-Truth Live Synchronizer Stylesheet
 * Scientific Audio Lab Workstation & Mobile Sensor Node
 * ==============================================================================
 */

:root {
    --bg-base: #090b10;
    --bg-surface: #11141c;
    --bg-elevated: #181c26;
    --bg-inset: #0c0e14;
    
    --border-subtle: #1e2330;
    --border-strong: #2a3142;
    --border-focus: #38bdf8;

    --text-main: #f1f5f9;
    --text-muted: #8492a6;
    --text-dim: #4e596f;

    /* Instruments & States */
    --accent-blue: #38bdf8;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-crimson: #ef4444;

    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-ui);
    font-size: 13px;
    line-height: 1.5;
    min-height: 100vh;
    padding: 16px;
    display: flex;
    justify-content: center;
}

.lab-layout {
    width: 100%;
    max-width: 1280px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ==============================================================================
   TOP TELEMETRY BAR
   ============================================================================== */
.telemetry-bar {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-indicator {
    width: 4px;
    height: 28px;
    background: var(--accent-blue);
    border-radius: 2px;
}

.brand-title {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fff;
    font-family: var(--font-mono);
}

.brand-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.telemetry-metrics {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.telemetry-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.74rem;
}

.chip-label {
    color: var(--text-dim);
    font-weight: 600;
}

.chip-val {
    color: var(--text-main);
}

.chip-val.highlight {
    color: var(--accent-blue);
    font-weight: 600;
}

.chip-led {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--text-dim);
    transition: all 0.2s ease;
}

.telemetry-chip.connected .chip-led {
    background: var(--accent-emerald);
    box-shadow: 0 0 8px var(--accent-emerald);
}

.telemetry-chip.warning .chip-led {
    background: var(--accent-amber);
    box-shadow: 0 0 8px var(--accent-amber);
}

.telemetry-chip.error .chip-led {
    background: var(--accent-crimson);
}

.btn-header-action,
.btn-header-export {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    color: var(--text-main);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-decoration: none;
    transition: all 0.15s ease;
}

.btn-header-action:hover,
.btn-header-export:hover {
    background: #202634;
    border-color: var(--accent-blue);
}

/* Progress Track */
.global-progress-track {
    height: 3px;
    background: var(--bg-surface);
    border-radius: 2px;
    overflow: hidden;
    margin-top: -6px;
}

.global-progress-bar {
    height: 100%;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

/* ==============================================================================
   WORKSPACE GRID
   ============================================================================== */
.workspace-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 14px;
}

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

.panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 10px;
}

.panel-tag {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.status-pill {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    color: var(--text-dim);
}

.status-pill.active {
    color: var(--accent-emerald);
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.08);
}

/* Active Key Readout Card */
.active-key-readout {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    align-items: center;
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px 16px;
}

.key-target-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.cell-label {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.cell-keycap {
    width: 46px;
    height: 46px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-bottom: 3px solid #000;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent-blue);
    transition: all 0.1s ease;
}

.cell-keycap.press-flash {
    background: var(--accent-blue);
    color: #000;
    transform: translateY(2px);
    border-bottom-width: 1px;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
}

.cell-keycap.save-flash {
    background: var(--accent-emerald);
    color: #000;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.5);
}

.key-metric-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cell-num {
    font-family: var(--font-mono);
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.cell-num strong {
    font-size: 1.3rem;
    color: #fff;
}

.cell-num .denom {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.key-status-cell {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.cell-badge {
    font-size: 0.7rem;
    font-family: var(--font-mono);
    padding: 3px 8px;
    border-radius: 3px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
}

.cell-badge.saved {
    color: var(--accent-emerald);
    border-color: rgba(16, 185, 129, 0.3);
    background: rgba(16, 185, 129, 0.1);
}

/* Typing Arena Container */
.typing-console-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.console-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.console-label {
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-weight: 600;
}

.console-hint {
    font-size: 0.68rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
}

.typing-textarea {
    width: 100%;
    min-height: 110px;
    background: var(--bg-inset);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: 12px;
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: vertical;
    outline: none;
    transition: all 0.15s ease;
}

.typing-textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.15);
}

.typing-textarea::placeholder {
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* Pangram Recommendation Card */
.pangram-card {
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pangram-header {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pangram-tag {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--accent-blue);
    font-weight: 700;
}

.pangram-text {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.02);
    padding: 6px 8px;
    border-radius: 3px;
    border: 1px dashed var(--border-subtle);
    user-select: all;
}

/* Telemetry Terminal Feed */
.telemetry-terminal {
    background: #07090d;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-top: auto;
}

.terminal-bar {
    background: #0f121a;
    border-bottom: 1px solid var(--border-subtle);
    padding: 6px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.term-title {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    font-weight: 700;
}

.btn-term-clear {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    cursor: pointer;
}
.btn-term-clear:hover { color: var(--text-main); }

.terminal-feed {
    padding: 8px 12px;
    max-height: 100px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.log-line { line-height: 1.35; }
.log-line.info { color: var(--text-muted); }
.log-line.success { color: var(--accent-emerald); }
.log-line.warn { color: var(--accent-amber); }
.log-line.error { color: var(--accent-crimson); }

/* ==============================================================================
   TACTILE KEYBOARD DECK (QWERTY)
   ============================================================================== */
.keyboard-deck {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px;
}

.deck-row {
    display: flex;
    gap: 4px;
    justify-content: center;
}

.deck-keycap {
    flex: 1;
    min-width: 32px;
    height: 42px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-bottom: 2px solid #000;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 4px 5px;
    cursor: pointer;
    user-select: none;
    transition: all 0.1s ease;
    position: relative;
    overflow: hidden;
}

.deck-keycap:hover {
    background: #222736;
    border-color: #4b5563;
    transform: translateY(-1px);
}

.deck-keycap:active {
    transform: translateY(1px);
    border-bottom-width: 1px;
}

.deck-keycap .k-char {
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-main);
    line-height: 1;
}

.deck-keycap .k-count {
    font-size: 0.62rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
    align-self: flex-end;
    line-height: 1;
}

.deck-keycap .k-gauge {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--accent-blue);
    width: 0%;
    transition: width 0.2s ease;
}

.deck-keycap.press-active {
    background: #1e3a5f;
    border-color: var(--accent-blue);
}
.deck-keycap.press-active .k-char { color: var(--accent-blue); }

.deck-keycap.flash-saved {
    background: #0f2e22;
    border-color: var(--accent-emerald);
}

.deck-keycap.completed {
    border-color: rgba(16, 185, 129, 0.4);
    background: #0f1c19;
}
.deck-keycap.completed .k-count { color: var(--accent-emerald); font-weight: 600; }
.deck-keycap.completed .k-gauge { background: var(--accent-emerald); }

/* Phone Pairing Guidance Card */
.pairing-card {
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pairing-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: #fff;
    font-family: var(--font-mono);
}

.pairing-steps {
    margin-left: 18px;
    color: var(--text-muted);
    font-size: 0.78rem;
    display: flex;
    flex-direction: column;
    gap: 6px;
    line-height: 1.4;
}

.pairing-steps strong {
    color: #fff;
}

.url-badge {
    background: #192236;
    border: 1px solid var(--border-strong);
    color: var(--accent-blue);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    user-select: all;
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-ui);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
    user-select: none;
}

.btn-primary {
    background: #1e293b;
    border-color: #3b82f6;
    color: #fff;
}
.btn-primary:hover:not(:disabled) {
    background: #2563eb;
}

.btn-secondary {
    background: var(--bg-elevated);
    border-color: var(--border-strong);
    color: var(--text-main);
}
.btn-secondary:hover:not(:disabled) {
    background: #202634;
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--accent-crimson);
    color: #fca5a5;
}
.btn-danger:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.3);
}

.btn-giant {
    width: 100%;
    padding: 16px;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    font-family: var(--font-mono);
    border-radius: var(--radius-md);
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    color: var(--text-muted);
    padding: 4px 6px;
    cursor: pointer;
}
.btn-icon:hover { color: #fff; border-color: var(--border-strong); }

.lab-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    padding: 4px 8px;
}

/* ==============================================================================
   PHONE RECEIVER / STREAMER OLED VIEW (phone.html)
   ============================================================================== */
.phone-body {
    padding: 14px;
    background-color: #06070a;
}

.phone-layout {
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0 auto;
}

.phone-header {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px;
    text-align: center;
}

.phone-brand-tag {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--accent-blue);
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}

.phone-title {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: #fff;
}

.phone-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.phone-node-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.phone-node-card.active {
    border-color: rgba(16, 185, 129, 0.5);
    background: #0b1414;
}

.node-state-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.node-led {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-dim);
}

.phone-node-card.active .node-led {
    background: var(--accent-emerald);
    box-shadow: 0 0 10px var(--accent-emerald);
}

.node-info {
    display: flex;
    flex-direction: column;
}

.node-label {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
}

.node-val {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: #fff;
}

.node-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Oscilloscope */
.scope-module {
    background: var(--bg-inset);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.scope-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.scope-title {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--text-muted);
}

.scope-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-emerald);
}

.scope-spec {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--text-dim);
}

.scope-canvas-container {
    position: relative;
    width: 100%;
    height: 60px;
    background: #080a0e;
    border: 1px solid #1a1e2a;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

#vu-meter-canvas {
    width: 100%;
    height: 100%;
}

.scope-grid-overlay {
    position: absolute;
    right: 6px;
    top: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 4px 0;
    pointer-events: none;
}

.grid-line {
    font-size: 0.6rem;
    font-family: var(--font-mono);
    color: rgba(255, 255, 255, 0.2);
}

/* Phone Metrics */
.phone-metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.phone-metric-cell {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.phone-metric-cell .cell-num strong {
    font-size: 1.4rem;
    color: #fff;
    font-family: var(--font-mono);
}

.phone-metric-cell .cell-num strong.highlight {
    color: var(--accent-blue);
}

.phone-guide-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.guide-head {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--accent-blue);
    font-weight: 700;
}

.phone-guide-card p {
    font-size: 0.74rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.phone-terminal .terminal-feed {
    max-height: 80px;
}