/* =====================================================
   Symptom Checker — custom styles  (static/css/predict.css)
   Tailwind handles layout; this file handles the symptom
   cards, toggle switch, tones and popup bars.
   ===================================================== */

:root {
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --card-text: #334155;
  --card-muted: #94a3b8;
  --switch-off: #cbd5e1;
  --yes: #10b981;
  --yes-soft: #ecfdf5;
  --yes-ring: rgba(16, 185, 129, .28);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05), 0 1px 3px rgba(15, 23, 42, .06);
  --shadow-lg: 0 12px 28px -8px rgba(79, 70, 229, .25);
}

@media (prefers-color-scheme: dark) {
  :root {
    --card-bg: #172033;
    --card-border: #2a3650;
    --card-text: #e2e8f0;
    --card-muted: #7c8aa5;
    --switch-off: #3b4a68;
    --yes: #34d399;
    --yes-soft: rgba(16, 185, 129, .12);
    --yes-ring: rgba(52, 211, 153, .3);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow-lg: 0 12px 28px -8px rgba(0, 0, 0, .6);
  }
}

body { font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif; }

/* ---------- Symptom card ---------- */
.symptom {
  --t1: #6366f1;           /* tone gradient start */
  --t2: #8b5cf6;           /* tone gradient end   */
  --tsoft: #eef2ff;        /* tone soft bg        */

  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--card-bg);
  border: 1.5px solid var(--card-border);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  user-select: none;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}

/* soft colored glow in the corner */
.symptom::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--t1) 0%, transparent 70%);
  opacity: .08;
  transition: opacity .25s ease, transform .35s ease;
  pointer-events: none;
}

.symptom:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--t1);
}
.symptom:hover::before { opacity: .2; transform: scale(1.2); }
.symptom:active { transform: translateY(-1px) scale(.985); }
.symptom[hidden] { display: none; }

/* ---------- Tones (colour per category) ---------- */
.symptom[data-tone="rose"]    { --t1: #f43f5e; --t2: #fb7185; --tsoft: #fff1f2; }
.symptom[data-tone="sky"]     { --t1: #0ea5e9; --t2: #38bdf8; --tsoft: #f0f9ff; }
.symptom[data-tone="violet"]  { --t1: #7c3aed; --t2: #a78bfa; --tsoft: #f5f3ff; }
.symptom[data-tone="amber"]   { --t1: #f59e0b; --t2: #fbbf24; --tsoft: #fffbeb; }
.symptom[data-tone="orange"]  { --t1: #f97316; --t2: #fb923c; --tsoft: #fff7ed; }
.symptom[data-tone="teal"]    { --t1: #14b8a6; --t2: #2dd4bf; --tsoft: #f0fdfa; }
.symptom[data-tone="pink"]    { --t1: #ec4899; --t2: #f472b6; --tsoft: #fdf2f8; }
.symptom[data-tone="indigo"]  { --t1: #4f46e5; --t2: #818cf8; --tsoft: #eef2ff; }
.symptom[data-tone="slate"]   { --t1: #64748b; --t2: #94a3b8; --tsoft: #f1f5f9; }

@media (prefers-color-scheme: dark) {
  .symptom[data-tone="rose"]    { --tsoft: rgba(244, 63, 94, .15); }
  .symptom[data-tone="sky"]     { --tsoft: rgba(14, 165, 233, .15); }
  .symptom[data-tone="violet"]  { --tsoft: rgba(124, 58, 237, .18); }
  .symptom[data-tone="amber"]   { --tsoft: rgba(245, 158, 11, .15); }
  .symptom[data-tone="orange"]  { --tsoft: rgba(249, 115, 22, .15); }
  .symptom[data-tone="teal"]    { --tsoft: rgba(20, 184, 166, .15); }
  .symptom[data-tone="pink"]    { --tsoft: rgba(236, 72, 153, .15); }
  .symptom[data-tone="indigo"]  { --tsoft: rgba(79, 70, 229, .2); }
  .symptom[data-tone="slate"]   { --tsoft: rgba(100, 116, 139, .2); }
}

/* ---------- Icon tile ---------- */
.symptom__icon {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--tsoft);
  color: var(--t1);
  transition: background .25s ease, color .25s ease, transform .3s cubic-bezier(.34, 1.56, .64, 1), box-shadow .25s ease;
}
.symptom__icon svg { width: 22px; height: 22px; stroke-width: 2.1; }
.symptom:hover .symptom__icon { transform: rotate(-6deg) scale(1.08); }

/* ---------- Text ---------- */
.symptom__text {
  position: relative;
  z-index: 1;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.symptom__name {
  font-size: .93rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--card-text);
  word-break: break-word;
  cursor: pointer;
  transition: color .2s ease;
}
.symptom__status {
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--card-muted);
  transition: color .2s ease;
}

/* ---------- Toggle switch ---------- */
.symptom__switch {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  background: var(--switch-off);
  transition: background .25s ease;
}
.symptom__switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, .25);
  transition: transform .28s cubic-bezier(.34, 1.56, .64, 1);
}

/* ---------- Selected (Yes) state ---------- */
.symptom.is-yes {
  background: var(--yes-soft);
  border-color: var(--yes);
  box-shadow: 0 0 0 4px var(--yes-ring), var(--shadow-sm);
}
.symptom.is-yes::before { background: radial-gradient(circle, var(--yes) 0%, transparent 70%); opacity: .22; }
.symptom.is-yes .symptom__icon {
  background: linear-gradient(135deg, var(--t1), var(--t2));
  color: #fff;
  box-shadow: 0 6px 14px -4px var(--t1);
}
.symptom.is-yes .symptom__name   { color: var(--yes); }
.symptom.is-yes .symptom__status { color: var(--yes); font-weight: 700; }
.symptom.is-yes .symptom__switch { background: var(--yes); }
.symptom.is-yes .symptom__switch::after { transform: translateX(20px); }

/* little "pulse" when a card gets selected */
.symptom.just-on { animation: pulse-yes .35s ease; }
@keyframes pulse-yes {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.025); }
  100% { transform: scale(1); }
}

/* keyboard focus */
.symptom:focus-within { outline: 3px solid var(--t1); outline-offset: 2px; }

/* ---------- Popup bars ---------- */
.bar-fill { transition: width .8s cubic-bezier(.22, 1, .36, 1); }

/* ---------- Mobile ---------- */
@media (max-width: 480px) {
  .symptom { padding: 12px 14px; gap: 12px; }
  .symptom__icon { width: 42px; height: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  .symptom, .symptom__icon, .symptom__switch::after, .bar-fill { transition: none; animation: none; }
}