:root {
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #1c1e21;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-light: #eff4ff;
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
  --error-border: #fecaca;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14161a;
    --card-bg: #1e2126;
    --text: #f0f1f3;
    --text-muted: #9aa0ab;
    --border: #2c3036;
    --primary: #5b8def;
    --primary-light: #1c2636;
    --error-bg: #2a1616;
    --error-text: #f87171;
    --error-border: #4c1f1f;
    --date-icon-filter: invert(1);
  }
}

:root[data-theme="dark"] {
  --bg: #14161a;
  --card-bg: #1e2126;
  --text: #f0f1f3;
  --text-muted: #9aa0ab;
  --border: #2c3036;
  --primary: #5b8def;
  --primary-light: #1c2636;
  --error-bg: #2a1616;
  --error-text: #f87171;
  --error-border: #4c1f1f;
  --date-icon-filter: invert(1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.breadcrumb .lang-link {
  float: right;
}

.header {
  text-align: center;
  margin-bottom: 24px;
}

.header h1 {
  font-size: 1.6rem;
  margin: 0 0 6px;
}

.subtitle {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.95rem;
}

.intro {
  color: var(--text-muted);
  margin: 10px 0 0;
  font-size: 0.85rem;
  line-height: 1.5;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  border: 1px dashed var(--border);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ad-slot-top {
  margin-bottom: 20px;
}

.ad-slot-bottom {
  margin-top: 20px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg);
  transition: border-color 0.15s ease;
}

.input-group:focus-within {
  border-color: var(--primary);
}

.input-group input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 12px 14px;
  font-size: 1rem;
  color: var(--text);
  min-width: 0;
}

.input-group input::-webkit-calendar-picker-indicator {
  filter: var(--date-icon-filter, none);
  cursor: pointer;
}

.input-group input:focus {
  outline: none;
}

.input-group .unit {
  padding: 0 14px;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-left: 1px solid var(--border);
  align-self: stretch;
  display: flex;
  align-items: center;
}

.error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.85rem;
  margin-bottom: 18px;
}

.error.hidden {
  display: none;
}

.result {
  background: var(--primary-light);
  border-radius: 12px;
  padding: 20px;
}

.result-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.result-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.result-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.result-item-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

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

.footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 20px;
}

/* ───────── Guide d'utilisation ───────── */

.guide {
  margin-top: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.guide h2 {
  font-size: 1.25rem;
  margin: 0 0 4px;
}

.guide h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin: 24px 0 8px;
}

.guide h4 {
  font-size: 0.95rem;
  margin: 16px 0 4px;
}

.guide p {
  margin: 0 0 12px;
}

.guide ol,
.guide ul {
  margin: 0 0 12px;
  padding-left: 22px;
}

.guide li {
  margin-bottom: 6px;
}

.guide li ul {
  margin-top: 6px;
}

.guide .formula {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  background: var(--primary-light);
  border-radius: 8px;
  padding: 10px 14px;
  overflow-x: auto;
}

.guide .faq h4:first-child {
  margin-top: 0;
}

.guide .faq p:last-child {
  margin-bottom: 0;
}

.guide a {
  color: var(--primary);
}

/* ───────── Éphéméride ───────── */

.search-block {
  margin: 0;
}

.search-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.date-row,
.name-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.select-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 0 0 84px;
}

.select-group.select-mois {
  flex: 1 1 auto;
  min-width: 0;
}

.select-group label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.select-group select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239aa0ab' stroke-width='2'/%3E%3C/svg%3E") no-repeat right 12px center;
  padding: 12px 32px 12px 12px;
  font-size: 1rem;
  color: var(--text);
  cursor: pointer;
}

.select-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.name-row .input-group {
  flex: 1;
}

.btn {
  flex: 0 0 auto;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.btn:hover {
  filter: brightness(1.08);
}

.btn:focus-visible,
.nav-day:focus-visible,
.date-chip:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.btn-secondary {
  background: var(--primary-light);
  color: var(--primary);
}

.separator {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.separator::before,
.separator::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--border);
}

.message {
  margin-top: 18px;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.9rem;
  line-height: 1.5;
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

.message.hidden,
.hidden {
  display: none !important;
}

.message .date-chip {
  margin-top: 6px;
}

.result {
  margin-top: 20px;
  padding: 22px 20px;
}

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.result-date-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.result-date {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
}

.result-today {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  background: var(--card-bg);
  border-radius: 999px;
  padding: 2px 10px;
}

.nav-day {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.nav-day:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.result-name {
  text-align: center;
  font-size: 2.1rem;
  line-height: 1.15;
  color: var(--primary);
  margin: 14px 0 4px;
  overflow-wrap: anywhere;
}

.result-title {
  text-align: center;
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
}

.result-variants,
.result-other {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0 0 8px;
  line-height: 1.6;
}

.date-chip {
  display: inline-block;
  margin: 2px 3px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--primary);
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.date-chip:hover {
  border-color: var(--primary);
}

.result-section {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.result-section h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.result-text p {
  margin: 0 0 12px;
  line-height: 1.7;
  font-size: 0.97rem;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.result-text p:last-child {
  margin-bottom: 0;
}

.ad-slot-inline {
  margin-top: 20px;
  min-height: 250px;
}

.result.loading .result-text {
  opacity: 0.4;
}

@media (max-width: 480px) {
  .card,
  .guide {
    padding: 18px 16px;
  }

  .date-row {
    flex-wrap: wrap;
  }

  .date-row .btn {
    flex: 1 1 100%;
  }

  .result {
    padding: 18px 14px;
  }

  .result-name {
    font-size: 1.75rem;
  }

  .result-text p {
    text-align: left;
  }
}