:root {
  --bg-top: #f3f1ea;
  --bg-bottom: #dce7ea;
  --card: rgba(255, 255, 255, 0.82);
  --card-strong: rgba(255, 255, 255, 0.94);
  --ink: #20313a;
  --muted: #5f7278;
  --line: rgba(32, 49, 58, 0.12);
  --accent: #145c6d;
  --accent-soft: #d7edf1;
  --alert: #8b3f28;
  --alert-soft: #fff1e9;
  --good: #235f49;
  --good-soft: #e6f4ee;
  --shadow: 0 24px 60px rgba(32, 49, 58, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  color-scheme: light dark;
}

[data-theme="dark"] {
  --bg-top: #141c20;
  --bg-bottom: #1a2428;
  --card: rgba(30, 42, 50, 0.88);
  --card-strong: rgba(36, 50, 58, 0.95);
  --ink: #d8e2e6;
  --muted: #8fa4ab;
  --line: rgba(200, 220, 230, 0.12);
  --accent: #5bbdd4;
  --accent-soft: rgba(91, 189, 212, 0.14);
  --alert: #e08a6a;
  --alert-soft: rgba(224, 138, 106, 0.12);
  --good: #6cc4a0;
  --good-soft: rgba(108, 196, 160, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(20, 92, 109, 0.12), transparent 32%),
    radial-gradient(circle at top right, rgba(139, 63, 40, 0.1), transparent 22%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
}

[data-theme="dark"] body {
  background:
    radial-gradient(circle at top left, rgba(91, 189, 212, 0.08), transparent 32%),
    radial-gradient(circle at top right, rgba(224, 138, 106, 0.06), transparent 22%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero {
  padding: 12px 4px 30px;
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.theme-toggle {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card-strong);
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: inline; }

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.weekly-header h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(2.3rem, 4vw, 4.5rem);
  line-height: 0.95;
  max-width: 10ch;
}

.hero-copy {
  max-width: 70ch;
  font-size: 1.04rem;
  line-height: 1.7;
  color: var(--muted);
  margin: 16px 0 22px;
}

.alert-strip {
  display: inline-flex;
  max-width: 78ch;
  padding: 14px 18px;
  border-radius: 999px;
  background: var(--alert-soft);
  color: var(--alert);
  border: 1px solid rgba(139, 63, 40, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .alert-strip {
  box-shadow: none;
}

.required {
  color: var(--alert);
  font-weight: 700;
}

.layout {
  display: grid;
  gap: 20px;
  grid-template-columns: 1.3fr 1fr;
}

.note-card,
.history-card {
  grid-column: 1 / -1;
}

.card {
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  padding: 26px;
}

[data-theme="dark"] .card {
  border-color: var(--line);
}

.section-heading {
  margin-bottom: 20px;
}

.section-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.field-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field,
.checkbox-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.field span,
.checkbox-field span {
  font-weight: 600;
  font-size: 0.96rem;
}

.field small {
  color: var(--muted);
  line-height: 1.5;
}

input,
select,
textarea,
.dose-cell input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card-strong);
  color: var(--ink);
  font: inherit;
  padding: 13px 14px;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

textarea {
  resize: vertical;
  min-height: 88px;
}

input:focus,
select:focus,
textarea:focus,
.dose-cell input:focus {
  outline: none;
  border-color: rgba(20, 92, 109, 0.45);
  box-shadow: 0 0 0 4px rgba(20, 92, 109, 0.12);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 8px 0 18px;
  align-items: center;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 140ms ease;
}

button:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: linear-gradient(135deg, #145c6d, #2b7b6f);
  color: white;
  box-shadow: 0 12px 24px rgba(20, 92, 109, 0.24);
}

.secondary-button {
  background: var(--accent-soft);
  color: var(--accent);
}

.small-button {
  padding: 8px 14px;
  font-size: 0.88rem;
}

.quick-patterns {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.chip-button {
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 999px;
  background: rgba(20, 92, 109, 0.06);
  color: var(--muted);
  border: 1px solid var(--line);
}

.chip-button:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.weekly-panel {
  margin: 6px 0 18px;
  padding: 18px;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(215, 237, 241, 0.9), rgba(255, 255, 255, 0.75));
  border: 1px solid rgba(20, 92, 109, 0.1);
}

[data-theme="dark"] .weekly-panel {
  background:
    linear-gradient(180deg, rgba(91, 189, 212, 0.08), rgba(30, 42, 50, 0.6));
}

.weekly-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.dose-summary {
  padding: 12px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(20, 92, 109, 0.1);
  color: var(--accent);
  font-weight: 700;
}

[data-theme="dark"] .dose-summary {
  background: rgba(30, 42, 50, 0.7);
}

.week-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
}

.dose-cell {
  padding: 12px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(20, 92, 109, 0.08);
}

[data-theme="dark"] .dose-cell {
  background: rgba(30, 42, 50, 0.6);
}

.dose-cell label {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dose-day {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.86rem;
}

.checkbox-field {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 241, 233, 0.7);
  border: 1px solid rgba(139, 63, 40, 0.12);
}

[data-theme="dark"] .checkbox-field {
  background: rgba(224, 138, 106, 0.08);
}

.checkbox-field input {
  width: auto;
  margin: 0;
}

.result-root {
  min-height: 180px;
}

.empty-state {
  border: 1px dashed rgba(32, 49, 58, 0.18);
  border-radius: 20px;
  padding: 28px;
  color: var(--muted);
  line-height: 1.7;
  background: rgba(255, 255, 255, 0.54);
}

[data-theme="dark"] .empty-state {
  background: rgba(30, 42, 50, 0.4);
}

.result-panel {
  display: grid;
  gap: 16px;
}

.result-banner,
.warning-banner,
.success-banner,
.interaction-banner {
  border-radius: 20px;
  padding: 18px 20px;
  line-height: 1.6;
}

.result-banner {
  background: rgba(20, 92, 109, 0.09);
  border: 1px solid rgba(20, 92, 109, 0.14);
}

.warning-banner {
  background: var(--alert-soft);
  border: 1px solid rgba(139, 63, 40, 0.14);
  color: var(--alert);
}

.success-banner {
  background: var(--good-soft);
  border: 1px solid rgba(35, 95, 73, 0.14);
  color: var(--good);
}

.interaction-banner {
  background: rgba(180, 120, 40, 0.08);
  border: 1px solid rgba(180, 120, 40, 0.18);
  color: #8b6914;
}

[data-theme="dark"] .interaction-banner {
  color: #d4a845;
}

.result-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.result-actions button {
  padding: 8px 16px;
  font-size: 0.88rem;
}

.result-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-card {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
}

[data-theme="dark"] .metric-card {
  background: rgba(30, 42, 50, 0.6);
}

.metric-card strong {
  display: block;
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 8px;
}

.metric-card span {
  font-size: 1.12rem;
  font-weight: 700;
}

.schedule-list,
.reason-list,
.source-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.8;
}

.method-list {
  color: var(--muted);
  line-height: 1.75;
}

.method-list p {
  margin: 0 0 12px;
}

.source-list a {
  color: var(--accent);
}

.inr-trend {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--muted);
  margin-left: 8px;
}

.trend-arrow {
  font-size: 1.2em;
  font-weight: 700;
}

.trend-arrow.up { color: var(--alert); }
.trend-arrow.down { color: var(--good); }
.trend-arrow.stable { color: var(--accent); }

/* ─── History ─────────────────────────────────────────────────────── */

.history-chart {
  margin-bottom: 16px;
}

.history-chart canvas {
  width: 100%;
  height: 200px;
  border-radius: 14px;
  background: var(--card-strong);
  border: 1px solid var(--line);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.history-table th,
.history-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.history-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
}

.history-table tr:last-child td {
  border-bottom: 0;
}

.ttr-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}

.ttr-good {
  background: var(--good-soft);
  color: var(--good);
}

.ttr-warn {
  background: var(--alert-soft);
  color: var(--alert);
}

/* ─── Print ───────────────────────────────────────────────────────── */

@media print {
  body {
    background: white !important;
    color: #000 !important;
  }

  .page-shell {
    width: 100%;
    padding: 0;
  }

  .form-card,
  .note-card,
  .history-card,
  .theme-toggle,
  .result-actions,
  .alert-strip {
    display: none !important;
  }

  .layout {
    display: block;
  }

  .card {
    box-shadow: none;
    backdrop-filter: none;
    border: 1px solid #ccc;
    background: white;
    break-inside: avoid;
  }

  .result-banner,
  .warning-banner,
  .success-banner {
    border: 1px solid #999;
  }
}

/* ─── Responsive ──────────────────────────────────────────────────── */

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .note-card,
  .history-card {
    grid-column: auto;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 24px;
  }

  .card {
    padding: 20px;
  }

  .field-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .weekly-header {
    flex-direction: column;
  }

  .week-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .alert-strip {
    border-radius: var(--radius-md);
  }
}

@media (max-width: 400px) {
  .week-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 1.8rem;
  }
}