:root {
  --bg: #05060a;
  --bg-card: #0b0d16;
  --accent: #ffb347;
  --accent-soft: rgba(255, 179, 71, 0.16);
  --border: #202334;
  --text-main: #f5f5ff;
  --text-muted: #a0a4c0;
  --error: #ff4d6b;
  --ok: #4fd37a;
  --input-bg: #090b12;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  background: radial-gradient(circle at top, #131629 0, #05060a 48%, #020308 100%);
  color: var(--text-main);
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 40px;
}

.shell {
  width: 100%;
  max-width: 1080px;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

header p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.logo-wrap {
  width: 160px;
  max-width: 40vw;
  filter: drop-shadow(0 0 18px rgba(255, 179, 71, 0.35));
}

.logo-wrap svg {
  width: 100%;
  height: auto;
  display: block;
}

.back-link {
  margin-top: 4px;
  font-size: 0.8rem;
  color: var(--accent);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
}

.back-link:hover {
  border-color: var(--accent);
  background: rgba(255, 179, 71, 0.12);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
}

@media (max-width: 880px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.grid-secondary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 22px;
}

@media (max-width: 880px) {
  .grid-secondary {
    grid-template-columns: minmax(0, 1fr);
  }
}

.card {
  background:
    linear-gradient(135deg, rgba(255, 179, 71, 0.05), transparent 48%) border-box,
    var(--bg-card);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 18px 18px 16px;
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(10, 12, 24, 0.9);
}

.card h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.card small {
  display: block;
  margin-bottom: 14px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.section-block {
  margin-top: 22px;
}

form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  margin-top: 4px;
}

@media (max-width: 640px) {
  form {
    grid-template-columns: minmax(0, 1fr);
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
}

.field label {
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

.field-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.84rem;
  color: var(--text-muted);
}

input[type="number"],
select {
  width: 100%;
  padding: 7px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  appearance: none;
}

input[type="number"]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(255, 179, 71, 0.36);
}

input[type="radio"],
input[type="checkbox"] {
  accent-color: var(--accent);
}

.hint {
  font-size: 0.76rem;
  color: var(--text-muted);
  opacity: 0.9;
}

.full-span {
  grid-column: 1 / -1;
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
}

.btn {
  border-radius: 999px;
  padding: 8px 16px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, #ffda8f, #ff9f1a);
  color: #221509;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.65),
    0 14px 32px rgba(0, 0, 0, 0.8);
  transition: transform 0.05s ease-out, box-shadow 0.05s ease-out, filter 0.05s;
}

.btn:disabled {
  cursor: wait;
  opacity: 0.6;
  box-shadow: none;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.7),
    0 18px 40px rgba(0, 0, 0, 0.95);
}

.btn.secondary {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
  box-shadow: none;
}

.btn.secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.result {
  background: radial-gradient(circle at top left, var(--accent-soft), transparent 60%);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 12px 12px 10px;
  font-size: 0.9rem;
  min-height: 58px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.result-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--text-muted);
}

.result-main {
  font-size: 1.1rem;
  font-weight: 600;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 2px 9px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.pill span {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  display: inline-block;
}

.pill.low span {
  background: #4fd37a;
}
.pill.moderate span {
  background: #ffd35b;
}
.pill.high span {
  background: #ff865b;
}

.algo-tag {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.error-msg {
  font-size: 0.85rem;
  color: var(--error);
}

.raw-toggle {
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  text-decoration: underline dotted;
  align-self: flex-end;
}

.raw-block {
  margin-top: 6px;
  padding: 8px;
  border-radius: 8px;
  background: rgba(3, 5, 12, 0.9);
  border: 1px dashed #2a3045;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.72rem;
  max-height: 160px;
  overflow: auto;
  white-space: pre-wrap;
}

.esc-card {
  margin-top: 22px;
}

.esc-card h3 {
  margin: 6px 0 4px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-main);
}

.esc-card p {
  margin: 0 0 4px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.esc-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 18px;
  margin-top: 4px;
}

@media (max-width: 720px) {
  .esc-cols {
    grid-template-columns: minmax(0, 1fr);
  }
}

.esc-note {
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.85;
}

.legend-card {
  margin-top: 18px;
}

.legend-list {
  margin: 4px 0 4px;
  padding-left: 18px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.legend-list li + li {
  margin-top: 4px;
}

.subheading {
  margin: 10px 0 4px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
}

.mod-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px 14px;
  margin-top: 4px;
}

.mod-grid .field {
  font-size: 0.8rem;
}

.mod-grid .field label {
  color: var(--text-main);
}

.mod-diabetes {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed #2a3045;
}

.mods-applied {
  margin-top: 4px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mods-applied ul {
  margin: 2px 0 0;
  padding-left: 16px;
}

.mods-applied li {
  margin: 0;
}

footer {
  margin-top: 26px;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  opacity: 0.8;
}

/* ============================
   Header comune Heart Tools
   (SCORE2 + CHA2DS2-VA/HAS-BLED)
   ============================ */

.ht-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}

.ht-logo {
  flex: 0 0 auto;
  width: 120px;
  max-width: 32vw;
  filter: drop-shadow(0 0 18px rgba(255, 179, 71, 0.35));
}

.ht-logo svg {
  width: 100%;
  height: auto;
  display: block;
}

.ht-header-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ht-header-text h1 {
  margin: 0;
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ht-subtitle {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.ht-back-link {
  margin-top: 4px;
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ht-back-link:hover {
  border-color: var(--accent);
  background: rgba(255, 179, 71, 0.12);
}

/* ============================
   Responsive layout
   ============================ */

/* Tablet / mobile: header a colonna, card strette in verticale */
@media (max-width: 880px) {
  body {
    padding: 20px 14px 32px;
  }

  .ht-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .ht-header-text {
    align-items: center;
  }

  .grid,
  .grid-secondary {
    grid-template-columns: minmax(0, 1fr);
  }

  form {
    grid-template-columns: minmax(0, 1fr);
  }

  .actions {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 8px;
  }

  .actions .btn {
    flex: 1 1 45%;
  }

  .card {
    padding: 16px 14px 14px;
  }
}

/* Smartphone stretti: padding ridotto, bottoni full-width, righe verticali */
@media (max-width: 480px) {
  body {
    padding: 16px 10px 28px;
  }

  .card {
    padding: 14px 12px 12px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .field-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .result-main {
    font-size: 1.15rem;
  }

  .pill {
    font-size: 0.8rem;
    padding: 3px 10px;
    white-space: normal;
  }
}