:root {
    --bg:       #f5f5f5;
    --surface:  #ffffff;
    --border:   #e0e0e0;
    --text:     #212121;
    --text-dim: #757575;

    --green:    #2e7d32;
    --green-bg: #e8f5e9;
    --red:      #c62828;
    --red-bg:   #ffebee;
    --amber:    #e65100;
    --amber-bg: #fff3e0;
    --blue:     #1565c0;
    --blue-bg:  #e3f2fd;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: stretch;
    justify-content: center;
    padding: 0;
}

.hidden { display: none !important; }

/* ─── Screen ─────────────────────────────────────────────── */
.screen {
    width: 100%;
    max-width: 820px;
    margin: 0 auto;
}

#startScreen {
    width: 100%;
    max-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px 16px;
}

#startScreen .container {
    background: transparent;
    border: none;
    padding: 32px;
    max-width: 600px;
}

/* ─── Card (shared surface) ──────────────────────────────── */
.container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
}

#gameScreen {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    max-width: 820px;
    margin: 0 auto;
}

#daySummaryScreen,
#winScreen,
#loseScreen {
    padding: 24px 16px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

/* ═══════════════════════════════════════════════════════════
   START SCREEN
   ═══════════════════════════════════════════════════════════ */
.title-block {
    text-align: center;
    margin-bottom: 24px;
}

.title-kicker {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.title-block h1 {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 700;
    color: var(--text);
    line-height: 1.15;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-dim);
    margin-top: 8px;
}

.intro-text {
    background: var(--blue-bg);
    border: 1px solid #bbdefb;
    border-radius: 6px;
    padding: 16px 20px;
    margin-bottom: 24px;
}

.intro-text p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 10px;
    color: var(--text);
}

.intro-text p:last-child { margin-bottom: 0; }

.warn  { color: var(--amber); font-weight: 600; }
.goal  { color: var(--blue);  font-weight: 600; }

.start-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.auto-solve-hint {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ─── Buttons ─────────────────────────────────────────────── */
.btn-primary {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    background: var(--blue);
    border: none;
    border-radius: 6px;
    padding: 10px 28px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s;
}

.btn-primary:hover { background: #1976d2; }

.btn-auto-solve {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 24px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s;
}

.btn-auto-solve:hover { background: var(--bg); }

/* ═══════════════════════════════════════════════════════════
   GAME SCREEN
   ═══════════════════════════════════════════════════════════ */

/* ─── HUD Header ──────────────────────────────────────────── */
.header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.hud-left  { display: flex; align-items: baseline; gap: 4px; }
.hud-right { display: flex; align-items: baseline; gap: 4px; justify-content: flex-end; }

.hud-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    text-transform: uppercase;
}

.hud-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--blue);
}

.hud-sep, .hud-total {
    font-size: 1rem;
    color: var(--text-dim);
}

.hud-center { text-align: center; }

.hud-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ─── Auto-Solve Badge ────────────────────────────────────── */
.auto-solve-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #f3e5f5;
    border: 1px solid #ce93d8;
    color: #6a1b9a;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.badge-spin {
    display: inline-block;
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* Step-mode toggle */
.step-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.85em;
    color: #6a1b9a;
}

.step-toggle input { display: none; }

.step-toggle-slider {
    position: relative;
    display: inline-block;
    width: 30px;
    height: 16px;
    background: #ce93d8;
    border-radius: 8px;
    transition: background 0.2s;
    flex-shrink: 0;
}

.step-toggle-slider::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.2s;
}

.step-toggle input:checked + .step-toggle-slider {
    background: #8e24aa;
}

.step-toggle input:checked + .step-toggle-slider::after {
    transform: translateX(14px);
}

/* ─── Resource Bars ───────────────────────────────────────── */
.resources {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.resource { text-align: center; }

.resource-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 5px;
    white-space: nowrap;
}

.resource-bar-container {
    background: #eee;
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 4px;
}

.resource-bar {
    height: 100%;
    background: var(--green);
    border-radius: 3px;
    transition: width 0.4s ease, background 0.4s ease;
    width: 100%;
}

.resource-bar.low      { background: var(--amber); }
.resource-bar.critical { background: var(--red); }

.resource-value {
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ─── Event Modal ─────────────────────────────────────────── */
.event-display {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.event-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    max-width: 440px;
    width: 90%;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.event-kicker {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--amber);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.event-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.event-card p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin-bottom: 24px;
}

/* ─── Patient Card ────────────────────────────────────────── */
.patient-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    margin: 0 auto;
    max-width: 680px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}

.card-kicker {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.patient-name-block h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

/* AI Score block */
.ai-score {
    text-align: right;
    min-width: 100px;
}

.ai-label {
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.score-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--blue);
    line-height: 1;
    margin-bottom: 6px;
}

.ai-score-bar-wrap {
    background: #eee;
    height: 4px;
    border-radius: 2px;
    overflow: hidden;
}

.ai-score-bar {
    height: 100%;
    background: var(--blue);
    border-radius: 2px;
    transition: width 0.4s ease;
    width: 0%;
}

/* Patient info rows */
.card-body { margin-bottom: 16px; }

.info-row {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

.info-row:last-child { border-bottom: none; }

.info-icon {
    font-size: 0.9em;
    min-width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.info-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    min-width: 130px;
    flex-shrink: 0;
}

.info-row span:last-child {
    font-size: 0.9rem;
    color: var(--text);
    flex: 1;
}

.symptoms-row span:last-child {
    color: var(--amber);
    font-weight: 600;
}

/* Decision buttons */
.card-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.btn-turn-away,
.btn-admit {
    flex: 1;
    padding: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.15s;
}

.btn-turn-away {
    background: var(--red-bg);
    color: var(--red);
    border: 1px solid #ef9a9a;
}

.btn-turn-away:hover { background: #ffcdd2; }

.btn-admit {
    background: var(--green-bg);
    color: var(--green);
    border: 1px solid #a5d6a7;
}

.btn-admit:hover { background: #c8e6c9; }

.btn-turn-away:disabled,
.btn-admit:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ─── Auto-Solve Indicator ────────────────────────────────── */
.auto-solve-indicator {
    margin-top: 16px;
    padding: 14px 18px;
    background: #f3e5f5;
    border: 1px solid #ce93d8;
    border-radius: 6px;
    text-align: center;
}

.auto-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: #6a1b9a;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.auto-decision {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.auto-decision.admit     { color: var(--green); }
.auto-decision.turn-away { color: var(--red); }

.auto-reason {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin: 0 0 10px;
    line-height: 1.5;
}

.btn-execute-step {
    display: block;
    width: 100%;
    padding: 8px;
    background: #e1bee7;
    color: #4a148c;
    border: 1px solid #ce93d8;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-execute-step:hover { background: #ce93d8; }

/* ─── Feedback Toast ──────────────────────────────────────── */
.feedback-display {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    pointer-events: none;
}

.feedback-message {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 24px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.feedback-message.admit-toast {
    background: var(--green-bg);
    color: var(--green);
    border: 1px solid #a5d6a7;
}

.feedback-message.turn-away-toast {
    background: var(--red-bg);
    color: var(--red);
    border: 1px solid #ef9a9a;
}

.feedback-message.neutral-toast {
    background: var(--surface);
    color: var(--text-dim);
    border: 1px solid var(--border);
}

/* ═══════════════════════════════════════════════════════════
   DAY SUMMARY SCREEN
   ═══════════════════════════════════════════════════════════ */
.summary-header {
    text-align: center;
    margin-bottom: 24px;
}

.summary-kicker {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 4px;
}

#daySummaryScreen h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
}

.summary-content {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 24px;
    max-height: 55vh;
    overflow-y: auto;
}

.summary-item {
    padding: 10px 14px;
    margin-bottom: 8px;
    background: var(--bg);
    border-radius: 4px;
    border-left: 3px solid var(--border);
}

.summary-item:last-child { margin-bottom: 0; }

.summary-item h3 {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}

.summary-item p {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.5;
}

.summary-item.admitted    { border-left-color: var(--green); }
.summary-item.turned-away { border-left-color: var(--red); }

/* ═══════════════════════════════════════════════════════════
   WIN / LOSE SCREENS
   ═══════════════════════════════════════════════════════════ */
.win-container,
.lose-container { text-align: center; }

.result-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 5px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.win-badge  { background: var(--green-bg); color: var(--green); border: 1px solid #a5d6a7; }
.lose-badge { background: var(--red-bg);   color: var(--red);   border: 1px solid #ef9a9a; }

.win-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 700;
    color: var(--green);
    line-height: 1.1;
    margin-bottom: 12px;
}

.lose-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 700;
    color: var(--red);
    line-height: 1.1;
    margin-bottom: 12px;
}

.result-text {
    font-size: 0.95rem;
    color: var(--text-dim);
    margin-bottom: 24px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.final-stats {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 20px;
    text-align: left;
}

.final-stats h2 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-dim);
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 14px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 7px 0;
    border-bottom: 1px solid #f0f0f0;
}

.stat-row:last-child { border-bottom: none; }

.stat-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
}

.stat-value {
    font-size: 0.85rem;
    color: var(--text);
}

.stat-value.good { color: var(--green); }
.stat-value.bad  { color: var(--red); }

.reflection {
    background: var(--amber-bg);
    border: 1px solid #ffcc80;
    border-left: 3px solid var(--amber);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 24px;
    text-align: left;
}

.reflection h2 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--amber);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.reflection p {
    font-size: 0.88rem;
    color: var(--text);
    line-height: 1.65;
    margin-bottom: 10px;
}

.reflection p:last-child { margin-bottom: 0; }

.reflection ul {
    margin-left: 18px;
    margin-bottom: 10px;
}

.reflection li {
    font-size: 0.87rem;
    color: var(--text);
    margin-bottom: 5px;
    line-height: 1.5;
}

.reflection strong { font-weight: 700; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 600px) {
    #startScreen {
        padding: 12px;
    }

    #startScreen .container {
        padding: 24px 16px;
    }

    .container, #gameScreen { padding: 20px 16px; }

    .resources { grid-template-columns: repeat(3, 1fr); gap: 8px; }

    .header {
        grid-template-columns: 1fr 1fr;
        gap: 4px;
    }

    .hud-center { grid-column: 1 / -1; order: -1; }

    .card-header { flex-direction: column; gap: 12px; }

    .ai-score { text-align: left; }

    .card-actions { flex-direction: column; }

    .start-buttons { flex-direction: column; align-items: center; }
}