/* ═══════════════════════════════════════════════════════════════
   ECG RESCATE — Sistema Visual
   Paleta: negro clínico + verde monitor + rojo alerta + ámbar
   Tipografía: Space Grotesk (UI) + JetBrains Mono (datos/señal)
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg-deep:      #050a0e;
  --bg-card:      #0b1117;
  --bg-panel:     #0f1923;
  --bg-input:     #131f2b;
  --border:       #1e3040;
  --border-hi:    #2a4560;

  --green-signal: #00e676;
  --green-dim:    #00c853;
  --green-glow:   rgba(0, 230, 118, 0.15);

  --red-alert:    #ff1744;
  --red-dim:      #d50000;
  --amber:        #ffab00;
  --blue-info:    #448aff;

  --text-primary: #e8f4f8;
  --text-sec:     #7a9db5;
  --text-dim:     #3d6278;

  --font-ui:   'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --grid-green:  rgba(0, 230, 118, 0.06);
  --grid-line:   rgba(0, 230, 118, 0.12);
}

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

html { font-size: 15px; }

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-ui);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── HEADER ─────────────────────────────────────────────────── */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.6rem;
  color: var(--green-signal);
  animation: heartbeat 1.4s ease infinite;
  display: block;
  line-height: 1;
}

@keyframes heartbeat {
  0%,100% { transform: scale(1); }
  14%     { transform: scale(1.2); }
  28%     { transform: scale(1); }
  42%     { transform: scale(1.15); }
}

.logo-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.logo-sub {
  font-size: 0.7rem;
  color: var(--text-sec);
  display: block;
  letter-spacing: 0.03em;
}

.mode-switcher {
  display: flex;
  gap: 0.4rem;
  background: var(--bg-deep);
  padding: 0.25rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-sec);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s;
}

.mode-btn.active {
  background: var(--green-glow);
  color: var(--green-signal);
  border: 1px solid rgba(0,230,118,0.3);
}

.mode-btn:hover:not(.active) {
  background: var(--bg-panel);
  color: var(--text-primary);
}

.score-display {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.9rem;
}

.score-item { text-align: center; }
.score-num {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--green-signal);
  display: block;
  line-height: 1;
}
.score-lbl { font-size: 0.65rem; color: var(--text-dim); }
.score-sep { color: var(--border-hi); font-size: 1.2rem; }

/* ── STATUS BANNER ───────────────────────────────────────────── */
.status-banner {
  background: #1a2a10;
  border-bottom: 1px solid #2d4a1a;
  padding: 0.5rem 1.5rem;
  font-size: 0.8rem;
  color: var(--amber);
  text-align: center;
}

.hidden { display: none !important; }

/* ── MAIN LAYOUT ─────────────────────────────────────────────── */
.main-content {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1rem;
  padding: 1rem 1.5rem;
  flex: 1;
  min-height: 0;
}

/* ── ECG SECTION ─────────────────────────────────────────────── */
.ecg-section { display: flex; flex-direction: column; }

.ecg-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.patient-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  flex-wrap: wrap;
}

.patient-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-sec);
  font-family: var(--font-mono);
}

.pinfo-sep { color: var(--border-hi); }

.pinfo-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pinfo-badge.normal   { background: rgba(34,197,94,0.2);   color: #22c55e; }
.pinfo-badge.warning  { background: rgba(245,158,11,0.2);  color: #f59e0b; }
.pinfo-badge.critical { background: rgba(239,68,68,0.2);   color: #ef4444; }
.pinfo-badge.moderate { background: rgba(59,130,246,0.2);  color: #60a5fa; }
.pinfo-badge.unknown  { background: rgba(107,114,128,0.2); color: #9ca3af; }

.ecg-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ctrl-label { font-size: 0.75rem; color: var(--text-dim); }

select#leadSelect {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
}

.ctrl-btn {
  background: var(--green-glow);
  border: 1px solid rgba(0,230,118,0.3);
  color: var(--green-signal);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.ctrl-btn:hover { background: rgba(0,230,118,0.25); }
.ctrl-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── ECG CANVAS AREA ─────────────────────────────────────────── */
.ecg-container {
  position: relative;
  flex: 1;
  min-height: 300px;
  background:
    repeating-linear-gradient(var(--grid-green) 0 1px, transparent 1px 20px),
    repeating-linear-gradient(90deg, var(--grid-green) 0 1px, transparent 1px 20px),
    repeating-linear-gradient(var(--grid-line) 0 1px, transparent 1px 100px),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 100px),
    var(--bg-deep);
  background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px, auto;
}

#ecgCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.ecg-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5,10,14,0.85);
  backdrop-filter: blur(2px);
}

.loading-pulse {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--text-sec);
  font-size: 0.85rem;
}

.pulse-ring {
  width: 48px;
  height: 48px;
  border: 2px solid var(--green-signal);
  border-radius: 50%;
  animation: pulse-out 1.2s ease-out infinite;
}

@keyframes pulse-out {
  0%   { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}

.ecg-footer {
  display: flex;
  gap: 1.5rem;
  padding: 0.45rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.ecg-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* ── SIDE PANEL ──────────────────────────────────────────────── */
.side-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-content {
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  height: 100%;
  overflow-y: auto;
}

.panel-header { border-bottom: 1px solid var(--border); padding-bottom: 0.8rem; }
.panel-title  { font-size: 1rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; }
.panel-desc   { font-size: 0.78rem; color: var(--text-sec); margin-top: 0.2rem; }

/* ── QUIZ OPTIONS ────────────────────────────────────────────── */
.options-grid {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.option-btn {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.18s;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--green-signal);
  background: var(--green-glow);
}

.option-btn.selected {
  border-color: var(--amber);
  background: rgba(255,171,0,0.1);
  color: var(--amber);
}

.option-btn.correct {
  border-color: var(--green-signal);
  background: rgba(0,230,118,0.12);
  color: var(--green-signal);
}

.option-btn.wrong {
  border-color: var(--red-alert);
  background: rgba(255,23,68,0.1);
  color: #ff6b6b;
  opacity: 0.7;
}

.option-letter {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* ── FEEDBACK ────────────────────────────────────────────────── */
.feedback-box {
  background: var(--bg-input);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  border: 1px solid var(--border);
}

.feedback-box.correct-fb { border-color: rgba(0,230,118,0.4); background: rgba(0,230,118,0.05); }
.feedback-box.wrong-fb   { border-color: rgba(255,23,68,0.4);  background: rgba(255,23,68,0.05); }

.feedback-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  line-height: 1;
}

.feedback-result {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
}

.feedback-explanation {
  font-size: 0.78rem;
  color: var(--text-sec);
  line-height: 1.5;
}

/* ── BUTTONS ─────────────────────────────────────────────────── */
.btn-confirm, .btn-reveal {
  width: 100%;
  padding: 0.7rem;
  border-radius: 8px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  margin-top: auto;
}

.btn-confirm {
  background: var(--green-signal);
  color: #000;
}

.btn-confirm:hover { background: var(--green-dim); }

.btn-reveal {
  background: transparent;
  border: 1.5px solid var(--border-hi);
  color: var(--text-sec);
}

.btn-reveal:hover { border-color: var(--text-sec); color: var(--text-primary); }

/* ── WAVE STEPS (LEARN MODE) ─────────────────────────────────── */
.wave-steps { display: flex; flex-direction: column; gap: 0.5rem; }

.wave-step {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s;
}

.wave-step:hover { border-color: var(--border-hi); }
.wave-step.open  { border-color: var(--green-signal); }

.wave-step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.9rem;
}

.wave-step-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.85rem;
}

.wave-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--green-glow);
  color: var(--green-signal);
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  border: 1px solid rgba(0,230,118,0.25);
}

.wave-chevron {
  font-size: 0.7rem;
  color: var(--text-dim);
  transition: transform 0.2s;
}

.wave-step.open .wave-chevron { transform: rotate(180deg); }

.wave-step-body {
  display: none;
  padding: 0 0.9rem 0.8rem;
  font-size: 0.78rem;
  color: var(--text-sec);
  line-height: 1.55;
}

.wave-step.open .wave-step-body { display: block; }

.wave-row {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.3rem;
}

.wave-lbl { color: var(--text-dim); min-width: 70px; flex-shrink: 0; }
.wave-val { color: var(--text-primary); }
.wave-val.ok    { color: var(--green-signal); }
.wave-val.warn  { color: var(--amber); }
.wave-val.alert { color: var(--red-alert); }

/* ── DIAGNOSIS REVEAL ────────────────────────────────────────── */
.diagnosis-reveal { display: flex; flex-direction: column; gap: 0.6rem; }
.diag-divider { height: 1px; background: var(--border); }
.diag-header  { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }

.diag-badge {
  font-size: 1rem;
  font-weight: 700;
  padding: 0.6rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.diag-explanation {
  font-size: 0.78rem;
  color: var(--text-sec);
  line-height: 1.55;
}

/* ── PROGRESS BAR ────────────────────────────────────────────── */
.progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.5rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.progress-bar-track {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green-signal), var(--green-dim));
  border-radius: 2px;
  transition: width 0.4s ease;
}

.progress-pct {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green-signal);
  min-width: 35px;
  text-align: right;
}

/* ── PRACTICE MODE ───────────────────────────────────────────── */
.practice-search input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.8rem;
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
}

.practice-search input:focus { border-color: var(--green-signal); }
.practice-search input::placeholder { color: var(--text-dim); }

.conditions-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: 340px;
  overflow-y: auto;
}

.condition-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.8rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.18s;
  gap: 0.5rem;
}

.condition-item:hover { border-color: var(--green-signal); background: var(--green-glow); }
.condition-item.active { border-color: var(--green-signal); background: var(--green-glow); }
.condition-item.no-data { opacity: 0.4; cursor: not-allowed; }

.condition-item-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
}

.condition-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.condition-name {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.condition-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  flex-shrink: 0;
  background: var(--border);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

.practice-result {
  background: var(--bg-input);
  border: 1px solid var(--green-signal);
  border-radius: 10px;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.practice-label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.practice-condition-name { font-size: 1rem; font-weight: 700; color: var(--green-signal); }
.practice-stats { font-size: 0.75rem; color: var(--text-sec); font-family: var(--font-mono); }

/* ── SCROLLBAR ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 3px; }

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .main-content { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  .ecg-container { min-height: 220px; }
  .side-panel { max-height: 420px; }
  .score-display { display: none; }
}