/* Signals Design System — PDD §26.3 */

/* === Custom Properties === */
:root {
    /* Color Palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-panel: #1a1a1a;
    --color-text-primary: #e8e8e8;
    --color-text-secondary: #999999;
    --color-text-muted: #666666;
    --color-accent: #4a9eff;
    --color-danger: #ff4a4a;
    --color-success: #4aff7a;
    --color-warning: #ffb84a;
    --color-signal-cheap: #999999;
    --color-signal-costly: #4aff7a;

    /* Spacing Scale (4px base) */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Typography */
    --font-family: system-ui, -apple-system, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;

    /* Touch Targets */
    --touch-min: 44px;

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

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

/* === Base === */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100dvh;
    padding:
        env(safe-area-inset-top)
        env(safe-area-inset-right)
        env(safe-area-inset-bottom)
        env(safe-area-inset-left);
    -webkit-tap-highlight-color: transparent;
}

/* === Layout === */
.app-main {
    max-width: 720px;
    margin: 0 auto;
    padding: var(--space-md);
}

.page-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Game container (legacy) */
.game-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    touch-action: manipulation;
}

/* === Responsive Game Layout === */
.game-layout {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto auto;
    gap: var(--space-md);
    min-height: calc(100dvh - var(--space-md) * 2);
    touch-action: manipulation;
}

.game-col-left,
.game-col-right {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Mobile tab bar */
.tab-bar {
    display: flex;
    gap: var(--space-xs);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-xs);
}

.tab-btn {
    flex: 1;
    min-height: var(--touch-min);
    padding: var(--space-sm);
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-muted);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    cursor: pointer;
    touch-action: manipulation;
}

.tab-btn.active {
    background: var(--color-bg-panel);
    color: var(--color-text-primary);
}

/* Mobile: hide inactive tab panels */
.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* Actions pinned at bottom on mobile */
.game-actions-pinned {
    position: sticky;
    bottom: 0;
    background: var(--color-bg-primary);
    padding: var(--space-sm) 0;
    z-index: 10;
}

/* Outcome drawer */
.game-outcome-drawer {
    background: var(--color-bg-panel);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
}

.game-outcome-drawer > button {
    width: 100%;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-family: var(--font-family);
    cursor: pointer;
    text-align: left;
    padding: var(--space-sm) 0;
}

.game-panel {
    background: var(--color-bg-panel);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.game-panel-header {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

/* === Typography === */
.heading-primary {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
}

.heading-secondary {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
}

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }

/* === Scenarios === */
.scenario-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.scenario-card {
    background: var(--color-bg-panel);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    min-height: var(--touch-min);
    display: flex;
    align-items: center;
}

.scenario-title {
    color: var(--color-accent);
    text-decoration: none;
    font-size: var(--font-size-lg);
}

.scenario-title:hover {
    text-decoration: underline;
}

/* === Placeholder Pages === */
.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 50dvh;
    gap: var(--space-md);
}

.placeholder-title {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
}

/* === Game Component Panels === */

/* Dialogue / signal feed */
.dialogue-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    min-height: 200px;
}

/* Action buttons */
.actions-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.action-btn {
    min-height: var(--touch-min);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-accent);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    cursor: pointer;
    touch-action: manipulation;
}

.action-btn:hover:not(:disabled) {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
}

.action-cost {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-left: var(--space-xs);
}

/* Belief panel */
.beliefs-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.belief-npc {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
}

.belief-npc-name {
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
}

.belief-trust {
    display: inline-block;
    padding: 2px var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: #fff;
    width: fit-content;
}

/* Belief axis rows — confidence styling per PDD §17.5.2 */
.belief-axis {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Low confidence: blurred/translucent, dashed border, qualifier */
.belief-axis--low {
    opacity: 0.5;
    filter: blur(0.5px);
}

.belief-axis--low .belief-bar-track {
    border-style: dashed;
}

/* Medium confidence: normal opacity, solid border */
.belief-axis--med {
    opacity: 0.85;
}

/* High confidence: full opacity, bold label, filled bar */
.belief-axis--high {
    opacity: 1;
}

.belief-axis--high .belief-label {
    font-weight: 700;
}

.belief-label {
    flex: 0 0 130px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.belief-bar-track {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    overflow: hidden;
}

.belief-bar-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.belief-qualifier {
    flex: 0 0 auto;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-style: italic;
}

/* Signal history (virtual scrolling container) */
.history-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    max-height: 400px;
    overflow-y: auto;
}

/* Signal cards */
.signal-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    position: relative;
}

.signal-card-cheap {
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-signal-cheap);
}

.signal-card-costly {
    background: rgba(74, 255, 122, 0.06);
    color: var(--color-signal-costly);
    border: 1px solid rgba(74, 255, 122, 0.3);
    box-shadow: 0 0 8px rgba(74, 255, 122, 0.1);
}

.signal-card-hard {
    background: rgba(74, 255, 122, 0.08);
    color: var(--color-signal-costly);
    border: 1px solid rgba(74, 255, 122, 0.5);
    box-shadow: 0 0 12px rgba(74, 255, 122, 0.15);
}

.signal-card-hard::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    border: 2px solid rgba(74, 255, 122, 0.2);
    pointer-events: none;
}

.signal-emitter {
    font-size: var(--font-size-sm);
    font-weight: bold;
}

.signal-body {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.signal-content {
    flex: 1;
}

.signal-badge {
    font-size: var(--font-size-sm);
    padding: 2px var(--space-xs);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.signal-badge-cheap {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-muted);
}

.signal-badge-costly {
    background: rgba(74, 255, 122, 0.15);
    color: var(--color-signal-costly);
}

.signal-badge-hard {
    background: rgba(74, 255, 122, 0.2);
    color: var(--color-signal-costly);
}

.signal-cheap {
    color: var(--color-signal-cheap);
}

.signal-costly {
    color: var(--color-signal-costly);
    font-weight: bold;
}

/* Resource display */
.resources-panel {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Outcome log */
.outcome-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-height: 300px;
    overflow-y: auto;
}

/* === Post-Game Masterclass === */

.masterclass-screen {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    grid-column: 1 / -1;
}

.masterclass-header {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    text-align: center;
    padding: var(--space-md) 0;
}

.masterclass-section {
    background: var(--color-bg-panel);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.masterclass-section-header {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding-bottom: var(--space-sm);
}

/* Belief vs Reality Timeline */
.timeline-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.timeline-npc-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.timeline-npc-label {
    font-weight: 600;
    color: var(--color-text-primary);
}

.timeline-dual-track {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.timeline-belief-track,
.timeline-truth-track {
    display: flex;
    gap: 2px;
    align-items: flex-end;
    height: 40px;
}

.timeline-truth-track {
    align-items: flex-start;
    opacity: 0.7;
}

.timeline-bar {
    flex: 1;
    border-radius: 2px;
    min-width: 4px;
    position: relative;
}

.timeline-belief-track .timeline-bar {
    background: var(--color-accent);
}

.timeline-truth-track .timeline-bar {
    background: var(--color-success);
}

.timeline-turn-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-align: center;
}

.timeline-divergence-peak {
    box-shadow: 0 0 6px var(--color-danger);
    border: 1px solid var(--color-danger);
}

/* Signal Audit */
.audit-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-height: 400px;
    overflow-y: auto;
}

.audit-entry {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    border-left: 3px solid transparent;
}

.audit-truthful {
    border-left-color: var(--color-success);
    background: rgba(74, 255, 122, 0.04);
}

.audit-distorted {
    border-left-color: var(--color-warning);
    background: rgba(255, 184, 74, 0.04);
}

.audit-deceptive {
    border-left-color: var(--color-danger);
    background: rgba(255, 74, 74, 0.04);
}

.audit-badge {
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    padding: 2px var(--space-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.audit-truthful .audit-badge {
    color: var(--color-success);
    background: rgba(74, 255, 122, 0.12);
}

.audit-distorted .audit-badge {
    color: var(--color-warning);
    background: rgba(255, 184, 74, 0.12);
}

.audit-deceptive .audit-badge {
    color: var(--color-danger);
    background: rgba(255, 74, 74, 0.12);
}

/* Decision Trace (masterclass) */
.trace-npc-group {
    margin-bottom: var(--space-md);
}

.trace-turn-header {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

/* Inference Score */
.score-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    text-align: center;
}

.score-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
}

.score-tier {
    font-size: var(--font-size-lg);
    font-weight: 600;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-lg);
    background: rgba(74, 158, 255, 0.15);
    color: var(--color-accent);
}

.score-stats {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Verdict Card */
.verdict-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #0a0a1a 100%);
    border: 1px solid rgba(74, 158, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.verdict-header {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    text-align: center;
    font-weight: 700;
}

.verdict-npc-line {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    padding: var(--space-xs) 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.verdict-misread {
    padding: var(--space-sm);
    background: rgba(255, 74, 74, 0.06);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-danger);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.verdict-tier-badge {
    display: inline-block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-lg);
    background: rgba(74, 158, 255, 0.15);
    color: var(--color-accent);
    text-align: center;
    align-self: center;
}

.verdict-seed {
    font-family: monospace;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
}

.verdict-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.verdict-share-btn {
    min-height: var(--touch-min);
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    background: var(--color-accent);
    color: var(--color-bg-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
}

.verdict-share-btn:hover {
    opacity: 0.9;
}

.verdict-canvas {
    display: none;
}

/* Signal divergence overlay (post-game history) */
.signal-div {
    font-size: var(--font-size-sm);
    padding: 2px var(--space-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
    white-space: nowrap;
}

.signal-div-truthful {
    color: var(--color-success);
    background: rgba(74, 255, 122, 0.12);
}

.signal-div-distorted {
    color: var(--color-warning);
    background: rgba(255, 184, 74, 0.12);
}

.signal-div-deceptive {
    color: var(--color-danger);
    background: rgba(255, 74, 74, 0.12);
}

/* === Responsive Breakpoints === */

/* Tablet / Desktop: >= 768px */
@media (min-width: 768px) {
    .app-main {
        max-width: 1024px;
    }

    .game-container {
        grid-template-columns: 1fr 1fr;
    }

    /* Responsive game layout: two columns */
    .game-layout {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr auto auto;
    }

    /* Hide tab bar on desktop */
    .tab-bar {
        display: none;
    }

    /* Show all tab panels on desktop regardless of active state */
    .tab-panel {
        display: block !important;
    }

    /* Left column: row 1, col 1 */
    .game-col-left {
        grid-column: 1;
        grid-row: 1;
    }

    /* Right column: row 1, col 2 */
    .game-col-right {
        grid-column: 2;
        grid-row: 1;
    }

    /* Actions: in right column, below beliefs */
    .game-actions-pinned {
        grid-column: 2;
        position: static;
        background: transparent;
        padding: 0;
    }

    /* Outcome drawer spans both columns */
    .game-outcome-drawer {
        grid-column: 1 / -1;
    }
}

/* === Mastery Page === */

.mastery-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    padding: var(--space-md);
    background: var(--color-bg-panel);
    border-radius: var(--radius-md);
}

.mastery-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) 0;
}

.mastery-archetype-card {
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    background: var(--color-bg-panel);
    border-radius: var(--radius-md);
}

.mastery-archetype-name {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    text-transform: capitalize;
    margin-bottom: var(--space-sm);
}

.mastery-progress-track {
    height: 8px;
    background: var(--color-bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--space-xs);
}

.mastery-progress-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.mastery-encounters {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* === Home Page === */

.home-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.home-section-title {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.challenge-card {
    display: block;
    background: var(--color-bg-panel);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-decoration: none;
    color: inherit;
    min-height: var(--touch-min);
    transition: border-color 0.15s;
}

.challenge-card:hover {
    border-color: var(--color-text-primary);
}

.challenge-card.challenge-done {
    border-color: var(--color-text-muted);
    opacity: 0.7;
}

.challenge-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.challenge-title {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
}

.challenge-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.challenge-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 9999px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.challenge-badge-daily {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.challenge-badge-weekly {
    background: var(--color-warning);
    color: var(--color-bg-primary);
}

.challenge-done-label {
    font-size: var(--font-size-sm);
    color: var(--color-success);
}

.mastery-summary {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.mastery-summary-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.mastery-summary-value {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    font-weight: 600;
}

.mastery-summary-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.nav-link {
    color: var(--color-accent);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

.nav-link:hover {
    text-decoration: underline;
}

/* === Scenario Resume === */

.scenario-resume {
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    margin-left: var(--space-xs);
}

.scenario-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-lg);
}

.btn-primary {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    cursor: pointer;
    min-height: var(--touch-min);
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-text-muted);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    cursor: pointer;
    min-height: var(--touch-min);
}

.btn-secondary:hover {
    border-color: var(--color-text-secondary);
}