/* ==========================================================================
   NEET Rank Predictor — stylesheet
   Design tokens carried over from the project's existing internal tool
   (frontend_integration/neet-rank-predictor-api-connected.html) so the
   public site shares the same brand: teal/navy/cream palette, IBM Plex
   Sans for UI text, Source Serif 4 for headings.
   ========================================================================== */

:root {
  --teal: #0d7377;
  --teal-dark: #0a5c5f;
  --navy: #14213d;
  --cream: #f6f5f1;
  --panel: #ffffff;
  --border: #e4e0d3;
  --border-soft: #f1efe8;
  --muted: #5c5a50;
  --muted-2: #8a8878;
  --success-bg: #eaf6ee;
  --success-fg: #1f7a3f;
  --warn-bg: #fdf3e2;
  --warn-fg: #92650f;
  --risk-bg: #fbeae9;
  --risk-fg: #a4342b;
  --focus: #0d7377;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(20, 33, 61, 0.06), 0 6px 20px rgba(20, 33, 61, 0.05);
}

* { box-sizing: border-box; }
html { scroll-padding-top: env(safe-area-inset-top, 0px); }

body {
  margin: 0;
  font-family: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  background: var(--cream);
  color: var(--navy);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.serif { font-family: "Source Serif 4", Georgia, serif; }

img, svg { max-width: 100%; display: block; }

a { color: var(--teal-dark); }

:focus-visible {
  outline: 2.5px solid var(--focus);
  outline-offset: 2px;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: 24px;
}

/* ---------- header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 245, 241, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top, 0px);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--teal);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 17px;
  flex-shrink: 0;
}
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }

nav.site-nav { display: none; gap: 26px; }
nav.site-nav a {
  font-size: 14px; font-weight: 600; color: var(--muted); text-decoration: none;
}
nav.site-nav a:hover { color: var(--teal-dark); }

@media (min-width: 760px) {
  nav.site-nav { display: flex; }
}

.status-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; color: var(--muted);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 5px 10px 5px 8px; background: var(--panel);
  white-space: nowrap;
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted-2); flex-shrink: 0; }
.status-pill[data-state="ok"] .status-dot { background: #2e9e57; }
.status-pill[data-state="down"] .status-dot { background: #c0392b; }

/* ---------- hero ---------- */
.hero { padding: 52px 0 40px; }
.hero-eyebrow { color: var(--teal-dark); font-weight: 700; font-size: 13.5px; margin: 0 0 10px; }
.hero h1 {
  font-size: clamp(30px, 4.5vw, 46px);
  line-height: 1.12;
  margin: 0 0 16px;
  max-width: 14ch;
}
.hero p.lead {
  font-size: 17px; color: var(--muted); max-width: 62ch; margin: 0 0 22px;
}
.hero-facts { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 13.5px; color: var(--muted); }
.hero-facts strong { color: var(--navy); font-variant-numeric: tabular-nums; }

/* ---------- predictor card ---------- */
.predictor-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 26px;
}

@media (min-width: 640px) {
  .predictor-card { padding: 34px; }
}

.predictor-card h2 { font-size: 21px; margin: 0 0 6px; }
.predictor-card .sub { color: var(--muted); font-size: 14px; margin: 0 0 24px; max-width: 58ch; }

.field-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 560px) {
  .field-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .field-grid { grid-template-columns: repeat(3, 1fr); }
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field.span-2 { grid-column: span 1; }
@media (min-width: 560px) {
  .field.span-2 { grid-column: span 2; }
}
@media (min-width: 900px) {
  .field.span-2 { grid-column: span 1; }
}

.field label { font-size: 12.5px; font-weight: 600; color: var(--muted); }
.field .hint { font-size: 11.5px; color: var(--muted-2); }

.field input, .field select {
  font: inherit;
  font-size: 14.5px;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--navy);
  width: 100%;
}
.field input:focus, .field select:focus { border-color: var(--teal); }
.field input.invalid { border-color: var(--risk-fg); }
.field select:disabled, .field input:disabled { background: #f4f3ef; color: var(--muted-2); }

.field-error { font-size: 12px; color: var(--risk-fg); min-height: 15px; }

.advanced-toggle {
  background: none; border: none; padding: 0; margin: 4px 0 18px;
  font-size: 13px; font-weight: 600; color: var(--teal-dark);
  cursor: pointer; display: inline-flex; align-items: center; gap: 5px;
}
.advanced-toggle svg { transition: transform 0.15s ease; }
.advanced-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

.predictor-actions {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-top: 22px;
}

.btn-primary {
  background: var(--teal); color: #fff; border: none;
  font: inherit; font-weight: 700; font-size: 15px;
  padding: 12px 26px; border-radius: var(--radius-sm);
  cursor: pointer; transition: background 0.12s ease;
}
.btn-primary:hover { background: var(--teal-dark); }
.btn-primary:disabled { background: #b9c6c5; cursor: not-allowed; }

.btn-secondary {
  background: none; border: 1.5px solid var(--border); color: var(--navy);
  font: inherit; font-weight: 600; font-size: 14px;
  padding: 10px 18px; border-radius: var(--radius-sm); cursor: pointer;
}
.btn-secondary:hover { border-color: var(--teal); color: var(--teal-dark); }

.spinner {
  width: 15px; height: 15px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.45); border-top-color: #fff;
  animation: spin 0.7s linear infinite; display: inline-block; vertical-align: -2px; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- results ---------- */
.results-section { margin-top: 40px; }
.results-summary {
  display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap; gap: 8px; margin-bottom: 16px;
}
.results-summary h3 { font-size: 18px; margin: 0; }
.results-summary .count { font-size: 13.5px; color: var(--muted); }

.state-box {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  color: var(--muted);
  background: rgba(255,255,255,0.5);
}
.state-box.error { border-color: rgba(164,52,43,0.35); background: var(--risk-bg); color: var(--risk-fg); }
.state-box p { margin: 0 0 14px; font-size: 14.5px; }
.state-box:last-child p:last-child { margin-bottom: 0; }

.result-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 720px) {
  .result-grid { grid-template-columns: repeat(2, 1fr); }
}

.result-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px;
}
.result-card-head { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; margin-bottom: 10px; }
.result-card-head h4 { margin: 0; font-size: 15.5px; line-height: 1.35; }
.result-card .place { font-size: 12.5px; color: var(--muted); margin-top: 3px; }

.chance-badge {
  flex-shrink: 0; font-size: 11px; font-weight: 700; padding: 4px 9px; border-radius: 999px; white-space: nowrap;
}
.chance-badge[data-chance="High Chance"] { background: var(--success-bg); color: var(--success-fg); }
.chance-badge[data-chance="Moderate Chance"] { background: var(--warn-bg); color: var(--warn-fg); }
.chance-badge[data-chance="Borderline"] { background: var(--risk-bg); color: var(--risk-fg); }

.result-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 12px; font-size: 13px; }
.result-meta div { display: flex; flex-direction: column; gap: 2px; }
.result-meta span.k { font-size: 11px; color: var(--muted-2); }
.result-meta span.v { font-weight: 600; color: var(--navy); font-variant-numeric: tabular-nums; }

/* ---------- colleges / states browse ---------- */
.college-search-row {
  display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap;
}
.college-search-row input[type="search"] {
  flex: 1; min-width: 220px;
  font: inherit; font-size: 14.5px;
  padding: 10px 12px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; color: var(--navy);
}
.college-search-row input[type="search"]:focus { border-color: var(--teal); }

.state-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  margin-bottom: 24px;
}
.state-chip {
  font: inherit; font-size: 13px; font-weight: 600; color: var(--navy);
  background: var(--panel); border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 9px 10px; cursor: pointer; text-align: center;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.state-chip:hover { border-color: var(--teal); }
.state-chip[aria-pressed="true"] { background: var(--teal); border-color: var(--teal); color: #fff; }

.college-results .state-box-inline {
  color: var(--muted); font-size: 14px; text-align: center;
  border: 1px dashed var(--border); border-radius: var(--radius); padding: 24px; margin: 0;
}
.college-results .state-box-inline.error { border-color: rgba(164,52,43,0.35); background: var(--risk-bg); color: var(--risk-fg); }

.college-results-summary {
  font-size: 13px; color: var(--muted); margin-bottom: 12px;
}

.college-list { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 640px) { .college-list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .college-list { grid-template-columns: repeat(3, 1fr); } }

.college-item {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 13.5px;
}
.college-item .name { font-weight: 600; color: var(--navy); display: block; margin-bottom: 3px; }
.college-item .state { color: var(--muted); font-size: 12px; }

/* ---------- info sections ---------- */
.info-section { margin-top: 64px; }
.info-section h2 { font-size: 24px; margin: 0 0 8px; }
.info-section .section-sub { color: var(--muted); margin: 0 0 26px; max-width: 62ch; }

.info-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 700px) { .info-grid { grid-template-columns: repeat(3, 1fr); } }

.info-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px;
}
.info-card h3 { font-size: 15px; margin: 0 0 8px; }
.info-card p { font-size: 13.5px; color: var(--muted); margin: 0; }

.disclaimer {
  margin-top: 56px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
  font-size: 12.5px; color: var(--muted-2); max-width: 74ch;
}

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--border); margin-top: 60px; padding: 28px 0 calc(28px + env(safe-area-inset-bottom, 0px)); }
.footer-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 24px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  font-size: 12.5px; color: var(--muted-2);
}

/* ---------- utility ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}