/* ============================================================
   MPH+ Diagnostic Game — Stylesheet
   Design tokens shared with Scenario Engine
============================================================ */

/* ── Tokens ────────────────────────────────────────────────── */
:root {
  --deep-scene:    #0D1B2A;
  --field-surface: #1A2B3C;
  --surface-2:     #1f3347;
  --surface-3:     #243d56;
  --alert-red:     #CC2936;
  --tech-white:    #F0F2F4;
  --gray:          #7B8FA6;
  --amber:         #E8960C;
  --success:       #6FCF97;
  --cyan:          #4DC9CC;
  --purple:        #9B72CF;
  --blue:          #3D7CC9;

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

  --font-heading: 'Barlow Condensed', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --shell-width:   860px;
  --gutter:        16px;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--deep-scene);
  color: var(--tech-white);
  font-family: var(--font-body);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Shell ─────────────────────────────────────────────────── */
#dg-shell {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 0 var(--gutter) 60px;
}

/* ── Nav / top bar ─────────────────────────────────────────── */
.dg-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--surface-2);
  margin-bottom: 24px;
}
.dg-nav-brand {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--tech-white);
  text-transform: uppercase;
}
.dg-nav-brand span { color: var(--success); }
.dg-nav-actions { display: flex; gap: 10px; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
}
.btn:hover   { opacity: .88; }
.btn:active  { transform: scale(.97); }

.btn--primary   { background: var(--success);    color: #071a0e; }
.btn--secondary { background: var(--surface-2);  color: var(--tech-white); }
.btn--ghost     { background: transparent; color: var(--gray); border: 1px solid var(--surface-3); }
.btn--danger    { background: var(--alert-red);  color: #fff; }

.btn:disabled { opacity: .35; cursor: not-allowed; pointer-events: none; }

/* ── Progress bar ──────────────────────────────────────────── */
.dg-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.dg-progress__label {
  font-family: var(--font-heading);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--gray);
  white-space: nowrap;
}
.dg-progress__bar {
  flex: 1;
  height: 4px;
  background: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
}
.dg-progress__fill {
  height: 100%;
  background: var(--success);
  border-radius: 2px;
  transition: width .35s ease;
}

/* ── Case header ───────────────────────────────────────────── */
.dg-case-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}
.dg-case-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.1;
  flex: 1;
}

/* Category badge */
.dg-cat-badge {
  font-family: var(--font-heading);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}
.dg-cat-cardiac       { background: rgba(204,41,54,.15); color: var(--alert-red); }
.dg-cat-respiratory   { background: rgba(77,201,204,.12); color: var(--cyan); }
.dg-cat-neurological  { background: rgba(155,114,207,.15); color: var(--purple); }
.dg-cat-trauma        { background: rgba(232,150,12,.13); color: var(--amber); }
.dg-cat-toxicology    { background: rgba(111,207,151,.12); color: var(--success); }

/* Difficulty */
.dg-difficulty {
  font-family: var(--font-heading);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
}
.dg-diff-basic        { background: rgba(111,207,151,.1); color: var(--success); }
.dg-diff-intermediate { background: rgba(232,150,12,.1);  color: var(--amber); }
.dg-diff-advanced     { background: rgba(204,41,54,.12);  color: var(--alert-red); }

/* ── Scene strip ───────────────────────────────────────────── */
.dg-scene-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--field-surface);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  margin-bottom: 8px;
}
.dg-scene-label {
  font-family: var(--font-heading);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--gray);
}
.dg-scene-setting { font-size: .875rem; font-weight: 600; }
.dg-scene-time    { font-size: .8rem;  color: var(--gray); margin-left: auto; }
.dg-scene-desc    { font-size: .875rem; color: var(--gray); line-height: 1.55; margin-bottom: 18px; }

/* ── Content grid ──────────────────────────────────────────── */
.dg-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
@media (max-width: 600px) {
  .dg-content-grid {
    grid-template-columns: 1fr;
  }
  .dg-monitor-col { order: -1; }
}

/* ── Info column ───────────────────────────────────────────── */
.dg-section         { margin-bottom: 16px; }
.dg-section-title   {
  font-family: var(--font-heading);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 7px;
}
.dg-patient-meta    { display: flex; flex-direction: column; gap: 4px; }
.dg-patient-row     { display: flex; gap: 8px; font-size: .875rem; }
.dg-pr-label        { color: var(--gray); min-width: 52px; }
.dg-pr-value        { font-weight: 600; }
.dg-chief-complaint { font-size: .95rem; font-weight: 600; line-height: 1.4; }
.dg-antecedents     { padding-left: 18px; font-size: .85rem; line-height: 1.65; }
.dg-antecedents li  { color: var(--gray); }
.dg-antecedents li::marker { color: var(--surface-3); }
.dg-body-text       { font-size: .875rem; line-height: 1.6; color: var(--gray); }

/* ── Monitor panel ─────────────────────────────────────────── */
.dg-monitor {
  background: var(--field-surface);
  border-radius: var(--radius-lg);
  padding: 14px;
  border: 1px solid var(--surface-2);
}

/* ECG strip */
.dg-ecg-container   { margin-bottom: 12px; }
.dg-ecg-label {
  display: block;
  font-family: var(--font-heading);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 5px;
}
.dg-ecg-strip {
  background: #0a1520;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--surface-2);
}
.dg-ecg-strip svg   { display: block; width: 100%; height: 56px; }
.dg-ecg-desc {
  font-size: .78rem;
  color: var(--gray);
  margin-top: 5px;
  line-height: 1.45;
}

/* Vitals grid */
.dg-vitals-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.dg-vitals-grid--compact { grid-template-columns: 1fr 1fr; gap: 5px; }

.dg-vital {
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 2px solid transparent;
  transition: border-color .2s;
}
.dg-vital.is-warning { border-left-color: var(--amber); }
.dg-vital.is-danger  { border-left-color: var(--alert-red); }

.dg-vital-label {
  font-family: var(--font-heading);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
}
.dg-vital-value {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1;
}
.dg-vital.is-warning .dg-vital-value { color: var(--amber); }
.dg-vital.is-danger  .dg-vital-value { color: var(--alert-red); }

.dg-monitor-rhythm {
  font-size: .78rem;
  color: var(--gray);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--surface-2);
  text-align: center;
}

/* ── Multi-patient monitor ─────────────────────────────────── */
.dg-multi-monitor {
  background: var(--field-surface);
  border-radius: var(--radius-lg);
  padding: 14px;
  border: 1px solid var(--surface-2);
}

/* Tabs */
.dg-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--surface-2);
  padding-bottom: 8px;
}
.dg-tab {
  font-family: var(--font-heading);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 5px 14px;
  background: var(--surface-2);
  color: var(--gray);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .15s, color .15s;
}
.dg-tab.is-active,
.dg-tab:hover { background: var(--surface-3); color: var(--tech-white); }

.dg-tab-panel            { display: none; }
.dg-tab-panel.is-active  { display: block; }

.dg-patient-summary {
  font-family: var(--font-heading);
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.dg-patient-desc   { font-size: .82rem; color: var(--gray); margin-bottom: 10px; line-height: 1.5; }

.dg-patient-findings {
  margin-top: 8px;
  padding-left: 16px;
  font-size: .82rem;
  line-height: 1.6;
}
.dg-patient-findings li { color: var(--gray); }

/* ── Findings section ──────────────────────────────────────── */
.dg-findings-section { margin-bottom: 20px; }
.dg-findings-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 0;
  list-style: none;
}
.dg-findings-list li {
  font-size: .875rem;
  padding: 7px 12px;
  background: var(--field-surface);
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--surface-3);
  line-height: 1.45;
}

/* ── Question + options ────────────────────────────────────── */
.dg-question-section { margin-bottom: 24px; }
.dg-question {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .03em;
  margin-bottom: 14px;
  padding: 12px 16px;
  background: var(--field-surface);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--success);
}
.dg-options         { display: flex; flex-direction: column; gap: 7px; }
.dg-option-btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  background: var(--field-surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-md);
  color: var(--tech-white);
  font-family: var(--font-body);
  font-size: .9rem;
  text-align: left;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s;
}
.dg-option-btn:hover  { background: var(--surface-2); border-color: var(--surface-3); }
.dg-option-btn:active { transform: scale(.99); }

.dg-option-btn.is-selected  { border-color: var(--success); background: rgba(111,207,151,.08); }
.dg-option-btn.is-disabled  { opacity: .4; cursor: not-allowed; pointer-events: none; }

.dg-option-letter {
  font-family: var(--font-heading);
  font-size: .85rem;
  font-weight: 700;
  width: 22px;
  height: 22px;
  min-width: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  margin-top: 1px;
}
.dg-option-text { line-height: 1.4; }

/* ── Feedback ──────────────────────────────────────────────── */
.dg-feedback {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--surface-2);
  margin-bottom: 20px;
}
.dg-feedback.is-correct    { border-color: rgba(111,207,151,.35); }
.dg-feedback.is-acceptable { border-color: rgba(232,150,12,.35); }
.dg-feedback.is-incorrect  { border-color: rgba(204,41,54,.35); }

.dg-feedback-banner {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.dg-feedback.is-correct    .dg-feedback-banner { background: rgba(111,207,151,.1); }
.dg-feedback.is-acceptable .dg-feedback-banner { background: rgba(232,150,12,.1); }
.dg-feedback.is-incorrect  .dg-feedback-banner { background: rgba(204,41,54,.1); }

.dg-feedback-verdict {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.dg-feedback.is-correct    .dg-feedback-verdict { color: var(--success); }
.dg-feedback.is-acceptable .dg-feedback-verdict { color: var(--amber); }
.dg-feedback.is-incorrect  .dg-feedback-verdict { color: var(--alert-red); }

.dg-feedback-selected {
  font-size: .85rem;
  color: var(--gray);
  margin-left: auto;
}
.dg-feedback-correct-label {
  width: 100%;
  font-size: .875rem;
  color: var(--tech-white);
  margin-top: 4px;
}

.dg-feedback-body  { padding: 18px 20px; }
.dg-fb-section-title {
  font-family: var(--font-heading);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 7px;
}
.dg-fb-text { font-size: .875rem; line-height: 1.65; color: var(--tech-white); }
.dg-fb-list {
  padding-left: 18px;
  font-size: .85rem;
  line-height: 1.65;
}
.dg-fb-list li { margin-bottom: 3px; }

.dg-fb-differentials li { color: var(--gray); }

.dg-fb-prehospital {
  margin-top: 16px;
  padding: 14px;
  background: rgba(61,124,201,.1);
  border-left: 3px solid var(--blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.dg-fb-prehospital .dg-fb-section-title { color: var(--blue); }

/* ── Navigation row ────────────────────────────────────────── */
.dg-nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
}

/* ── Summary ───────────────────────────────────────────────── */
.dg-summary {
  max-width: 640px;
  margin: 20px auto 0;
}
.dg-summary-header { text-align: center; margin-bottom: 24px; }
.dg-summary-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.dg-summary-sub { font-size: .95rem; color: var(--gray); }

.dg-summary-score {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 28px;
}
.dg-score-block {
  flex: 1;
  max-width: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 10px;
  border-radius: var(--radius-lg);
  background: var(--field-surface);
  border: 1px solid var(--surface-2);
}
.dg-score-block.is-correct    { border-color: rgba(111,207,151,.3); }
.dg-score-block.is-acceptable { border-color: rgba(232,150,12,.3); }
.dg-score-block.is-incorrect  { border-color: rgba(204,41,54,.3); }

.dg-score-num {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
}
.dg-score-block.is-correct    .dg-score-num { color: var(--success); }
.dg-score-block.is-acceptable .dg-score-num { color: var(--amber); }
.dg-score-block.is-incorrect  .dg-score-num { color: var(--alert-red); }
.dg-score-lbl {
  font-size: .78rem;
  color: var(--gray);
  margin-top: 5px;
}

.dg-summary-cases   { margin-bottom: 28px; }
.dg-summary-case-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  margin-bottom: 5px;
  background: var(--field-surface);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--surface-3);
}
.dg-summary-case-row.is-correct    { border-left-color: var(--success); }
.dg-summary-case-row.is-acceptable { border-left-color: var(--amber); }
.dg-summary-case-row.is-incorrect  { border-left-color: var(--alert-red); }

.dg-scr-title   { font-size: .9rem; font-weight: 600; }
.dg-scr-verdict {
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.is-correct    .dg-scr-verdict { color: var(--success); }
.is-acceptable .dg-scr-verdict { color: var(--amber); }
.is-incorrect  .dg-scr-verdict { color: var(--alert-red); }

/* ── Nav back link ──────────────────────────────────────────── */
.dg-nav-back {
  font-family: var(--font-heading); font-size: .78rem; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase;
  color: var(--gray); text-decoration: none;
  transition: color .15s;
}
.dg-nav-back:hover { color: var(--tech-white); }

/* ── IDLE / start screen ───────────────────────────────────── */
#dg-start-screen {
  text-align: center;
  padding: 56px 20px 72px;
}
.dg-start-logo {
  font-family: var(--font-heading);
  font-size: clamp(52px, 10vw, 96px);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.02em;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.dg-start-logo span { color: var(--success); }
.dg-start-sub {
  font-size: 1rem;
  color: var(--gray);
  max-width: 440px;
  margin: 0 auto 32px;
  line-height: 1.6;
}
.dg-start-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.dg-start-meta-item {
  padding: 14px 20px;
  border: 1px solid rgba(240,242,244,.07);
  border-radius: 8px;
  background: rgba(26,43,60,.5);
  min-width: 80px;
  font-family: var(--font-heading);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--gray);
  text-transform: uppercase;
}
.dg-start-meta-item strong { color: var(--tech-white); font-size: 1.2rem; display: block; }

/* ── Hidden util ───────────────────────────────────────────── */
.dg-hidden { display: none !important; }