/* ─── Reset & base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:        #1a1e2e;
  --ink-light:  #4a5170;
  --ink-faint:  #8b92ad;
  --bg:         #f7f8fc;
  --surface:    #ffffff;
  --border:     #e4e6f0;
  --accent:     #3d52a0;
  --accent-dim: #eef0f9;
  --gold:       #c4962a;
  --gold-light: #fdf6e3;
  --error-bg:   #fff5f5;
  --error-txt:  #c0392b;
  --error-bdr:  #fcc;
  --radius:     10px;
  --shadow-sm:  0 1px 4px rgba(30,40,90,.07);
  --shadow-md:  0 4px 18px rgba(30,40,90,.10);
  --font-body:  'DM Sans', system-ui, sans-serif;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --transition: 160ms ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

/* Visually hidden but accessible to screen readers and search engine crawlers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Header ─────────────────────────────────────────────────── */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: .7rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.site-brand {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--ink);
  flex-shrink: 0;
}
.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: block;
  flex-shrink: 0;
}
.brand-text { font-family: var(--font-serif); font-size: 1.1rem; letter-spacing: .01em; }
.brand-sub {
  font-size: .78rem;
  color: var(--ink-faint);
  border-left: 1.5px solid var(--border);
  padding-left: 1rem;
  line-height: 1.3;
}

/* ─── Main / container ───────────────────────────────────────── */
.site-main { flex: 1; padding: .75rem 0 3rem; }
.container { max-width: 860px; margin: 0 auto; padding: 0 1.5rem; }

/* ─── Compact page title ─────────────────────────────────────── */
.page-title-row {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.page-title-moon {
  font-size: 1.1rem;
  color: var(--accent);
  flex-shrink: 0;
}
.page-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--ink);
  white-space: nowrap;
}
.page-title-sub {
  font-size: .82rem;
  color: var(--ink-faint);
  padding-left: .25rem;
  border-left: 1.5px solid var(--border);
  margin-left: .25rem;
}

/* ─── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}
.search-card { padding: 1.5rem 1.75rem; }

/* ─── Form fields ─────────────────────────────────────────────── */
.field-row {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
}
.field { display: flex; flex-direction: column; flex: 1; min-width: 160px; }
.field--narrow { flex: 0 0 190px; }
.field--count  { flex: 0 0 100px; }
.field--btn { flex: 0 0 auto; }
.field-label {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: .4rem;
}
.optional { font-weight: 400; text-transform: none; color: var(--ink-faint); }
.field-input {
  height: 44px;
  padding: 0 .875rem;
  border: 1.5px solid var(--border);
  border-radius: 7px;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.field-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(61,82,160,.12);
  background: #fff;
}
.field-input::placeholder { color: var(--ink-faint); }

.field-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: 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' stroke='%238b92ad' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2rem;
  cursor: pointer;
}

.btn-search {
  height: 44px;
  padding: 0 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-family: var(--font-body);
  font-size: .97rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn-search:hover  { background: #2d3f82; }
.btn-search:active { transform: scale(.97); }

/* ─── Alert ──────────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .9rem 1.1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: .95rem;
}
.alert--error {
  background: var(--error-bg);
  border: 1px solid var(--error-bdr);
  color: var(--error-txt);
}
.alert-icon { font-size: 1.15rem; flex-shrink: 0; }

/* ─── Disambiguation ──────────────────────────────────────────── */
.section-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: .35rem;
}
.suggestion-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .35rem;
}
.suggestion-icon { font-size: 1.2rem; }
.suggestion-header .section-title { margin-bottom: 0; }

.candidate-btn--suggestion {
  border-color: var(--gold);
  background: var(--gold-light);
}
.candidate-btn--suggestion:hover {
  border-color: var(--gold);
  background: #f5e9c8;
}
.section-hint { color: var(--ink-light); font-size: .9rem; margin-bottom: 1rem; }
.candidate-list { display: flex; flex-direction: column; gap: .5rem; }
.candidate-form  { display: contents; }
.candidate-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  cursor: pointer;
  font-family: var(--font-body);
  text-align: left;
  transition: border-color var(--transition), background var(--transition);
}
.candidate-btn:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.candidate-name  { font-weight: 600; color: var(--ink); }
.candidate-state { color: var(--ink-light); font-size: .9rem; }

/* ─── Results header ──────────────────────────────────────────── */
.results-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1rem;
}
.results-location-icon { color: var(--accent); font-size: .9rem; }
.results-location {
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--accent);
  text-transform: uppercase;
}

/* ─── Result cards ────────────────────────────────────────────── */
.results-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: stretch;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.result-card:hover { box-shadow: var(--shadow-md); }

.result-num {
  background: var(--accent);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-style: italic;
  width: 54px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-body {
  flex: 1;
  padding: 1.1rem 1.4rem;
  position: relative;
}
.result-date {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--ink);
  margin-bottom: .8rem;
  font-weight: 400;
}
.result-rows { display: flex; flex-direction: column; gap: .4rem; margin-bottom: .75rem; }
.result-row {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: .97rem;
}
.result-row-icon  { font-size: 1.05rem; width: 1.3rem; text-align: center; color: var(--accent); }
.result-row-label { color: var(--ink-light); min-width: 70px; }
.result-row-time  { font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: .4rem; }
.tz-label {
  font-size: .75rem;
  font-weight: 400;
  color: var(--ink-faint);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  letter-spacing: .02em;
}

.result-delta {
  display: inline-block;
  background: var(--gold-light);
  border: 1px solid #e5d09a;
  color: var(--gold);
  border-radius: 5px;
  font-size: .82rem;
  font-weight: 600;
  padding: .2rem .6rem;
  letter-spacing: .02em;
}

.btn-calendar {
  position: absolute;
  top: 1rem;
  right: 1.1rem;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .75rem;
  background: var(--accent-dim);
  border: 1.5px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn-calendar:hover {
  background: var(--accent);
  color: #fff;
}

.results-note {
  color: var(--ink-faint);
  font-size: .8rem;
  margin-top: .5rem;
  line-height: 1.5;
}

/* ─── Spinner overlay ────────────────────────────────────────── */
.spinner-overlay {
  position: fixed;
  inset: 0;
  background: rgba(247, 248, 252, 0.85);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.spinner-overlay[hidden] { display: none; }

.spinner-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.spinner-ring {
  width: 52px;
  height: 52px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-text {
  font-size: .95rem;
  color: var(--ink-light);
  font-weight: 500;
  letter-spacing: .02em;
}

/* ─── Inline button spinner ──────────────────────────────────── */
.btn-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
.btn-spinner--hidden { display: none; }

.candidate-spinner {
  width: 14px;
  height: 14px;
  border-color: rgba(61,82,160,.3);
  border-top-color: var(--accent);
  margin-left: .5rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Intro / educational content ────────────────────────────── */
.intro-content {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.info-section {
  margin-bottom: 2.25rem;
}
.info-section:last-child { margin-bottom: 0; }

.info-heading {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: .65rem;
}

.info-text {
  color: var(--ink-light);
  font-size: .97rem;
  line-height: 1.7;
  margin-bottom: .75rem;
}
.info-text:last-child { margin-bottom: 0; }

.info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .9rem;
  margin: .75rem 0 1rem;
}
.info-list li {
  color: var(--ink-light);
  font-size: .95rem;
  line-height: 1.65;
  padding-left: 1.1rem;
  border-left: 2px solid var(--accent-dim);
}
.info-list strong { color: var(--ink); }

/* ─── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1rem 0;
}
.site-footer p {
  font-size: .8rem;
  color: var(--ink-faint);
  text-align: center;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  .field-row   { flex-direction: column; }
  .field--narrow, .field--count, .field--btn { flex: 1; }
  .result-num  { width: 42px; font-size: 1.3rem; }
  .result-date { font-size: 1.1rem; }
}