/* Medlysi Design System 0.1 — shared tokens + components for the public pages.
   Navy for structure, teal for action, amber for emphasis. */

:root {
  --navy-950: #0a1c2a;
  --navy-900: #0f2638;
  --navy-800: #17344b;
  --navy-700: #24475f;
  --navy-600: #45596a;
  --navy-500: #5d7080;
  --navy-400: #8397a6;
  --navy-300: #9fb0bd;
  --navy-250: #c4d0d9;
  --navy-200: #cdd7df;
  --navy-100: #e2e8ee;
  --navy-50: #eef2f5;

  --teal-700: #0b7d8b;
  --teal-600: #0e9aab;
  --teal-500: #16b5c7;
  --teal-400: #4fcbd8;
  --teal-100: #d6f3f6;
  --teal-50: #ecfafb;

  --amber-ink: #8a5a0c;
  --amber-600: #d98a14;
  --amber-500: #f2a531;
  --amber-100: #fdefd6;

  --success: #2f9e6a;
  --success-ink: #22744e;
  --success-bg: #e3f4ea;
  --danger: #d6453d;
  --danger-ink: #b3332c;
  --danger-bg: #fbe7e5;

  --surface: #ffffff;
  --canvas: #f4f7fa;

  --font-ui: 'Geologica', system-ui, sans-serif;
  --font-read: 'Noto Serif', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--navy-900);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: var(--teal-600); text-decoration: none; }
a:hover { color: var(--navy-900); }
h1, h2, h3, p { margin: 0; }
button, input, select { font-family: inherit; }
[hidden] { display: none !important; }

.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
@media (max-width: 480px) { .container { padding-left: 16px; padding-right: 16px; } }

/* Wordmark */
.wordmark { font-weight: 600; letter-spacing: -0.025em; color: var(--navy-900); font-size: 22px; }
.wordmark span { color: var(--teal-500); }
.wordmark:hover { color: var(--navy-900); }
.wordmark--light { color: #fff; }
.wordmark--light span { color: var(--teal-400); }
.wordmark--light:hover { color: #fff; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(244, 247, 250, .9);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--navy-100);
}
.topbar__inner { display: flex; align-items: center; gap: 28px; padding-top: 14px; padding-bottom: 14px; }
.topbar__nav { display: flex; gap: 24px; font-size: 14px; margin-left: auto; }
.topbar__nav a { color: var(--navy-600); }
.topbar__nav a:hover { color: var(--navy-900); }
.topbar__cta { margin-left: auto; }
.topbar__nav + .topbar__cta { margin-left: 0; }
@media (max-width: 760px) { .topbar__nav { display: none; } .topbar__nav + .topbar__cta { margin-left: auto; } }

/* Buttons — pill shape everywhere, 44px touch height */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; border-radius: 999px; cursor: pointer; white-space: nowrap;
  font-weight: 600; font-size: 14px; padding: 12px 22px; min-height: 44px;
  transition: background .15s, border-color .15s, color .15s;
}
.btn--sm { padding: 10px 18px; min-height: 40px; }
.btn--lg { font-size: 16px; padding: 16px 26px; min-height: 52px; }
.btn--block { display: flex; width: 100%; }
.btn--primary { background: var(--teal-500); color: var(--navy-950); }
.btn--primary:hover { background: var(--teal-600); color: var(--navy-950); }
.btn--dark { background: var(--navy-900); color: #fff; }
.btn--dark:hover { background: var(--navy-700); color: #fff; }
.btn--outline { background: #fff; color: var(--navy-900); border: 1px solid var(--navy-200); font-weight: 500; }
.btn--outline:hover { border-color: var(--navy-900); color: var(--navy-900); }
.btn--ghost { background: transparent; color: var(--teal-600); font-weight: 500; }
.btn--ghost:hover { background: var(--teal-50); color: var(--teal-600); }
.btn:disabled { background: var(--navy-100); color: var(--navy-400); cursor: not-allowed; }

/* Type helpers */
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-600); }
.h-section { font-size: clamp(32px, 4.2vw, 48px); line-height: 1.08; letter-spacing: -0.035em; font-weight: 700; text-wrap: pretty; }
.reading { font-family: var(--font-read); color: var(--navy-600); line-height: 1.65; text-wrap: pretty; }
.mono { font-family: var(--font-mono); }

/* Fields */
.field { display: flex; flex-direction: column; gap: 6px; }
.field__label { font-size: 13px; font-weight: 500; }
.input, .select {
  width: 100%; font-size: 16px; padding: 13px 14px;
  border: 1px solid var(--navy-200); border-radius: 12px;
  background: #fff; color: var(--navy-900); outline: none;
  -webkit-appearance: none; appearance: none;
}
.input:focus, .select:focus { border-color: var(--teal-500); box-shadow: 0 0 0 3px var(--teal-100); }
.select-wrap { position: relative; }
.select-wrap::after {
  content: '▾'; position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  pointer-events: none; color: var(--navy-500); font-size: 12px;
}
.select-wrap .select { padding-right: 36px; }

/* Quiz option */
.opt {
  display: flex; gap: 12px; align-items: center; width: 100%; text-align: left;
  padding: 14px; min-height: 56px; border-radius: 16px;
  border: 1.5px solid var(--navy-100); background: #fff; color: var(--navy-900);
  font-size: 15px; line-height: 1.35; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.opt:hover:not(:disabled) { border-color: var(--navy-300); }
.opt:disabled { cursor: default; }
.opt__key {
  width: 30px; height: 30px; flex: none; border-radius: 50%;
  display: grid; place-items: center; font-size: 13px; font-weight: 600;
  background: var(--navy-50); color: var(--navy-700);
}
.opt.is-correct { background: var(--success-bg); border-color: var(--success); }
.opt.is-correct .opt__key { background: var(--success); color: #fff; }
.opt.is-wrong { background: var(--danger-bg); border-color: var(--danger); }
.opt.is-wrong .opt__key { background: var(--danger); color: #fff; }
.opt.is-muted { color: var(--navy-400); }

.feedback { border-radius: 16px; padding: 16px; display: flex; flex-direction: column; gap: 6px; }
.feedback--ok { background: var(--success-bg); }
.feedback--ok .feedback__title { color: var(--success-ink); }
.feedback--bad { background: var(--danger-bg); }
.feedback--bad .feedback__title { color: var(--danger-ink); }
.feedback__title { font-size: 14px; font-weight: 600; }
.feedback__body { font-family: var(--font-read); font-size: 14px; line-height: 1.55; color: var(--navy-700); }

.progress { height: 6px; border-radius: 999px; background: var(--navy-100); overflow: hidden; }
.progress > div { height: 100%; background: var(--teal-500); border-radius: 999px; transition: width .3s ease; }

/* Footer */
.footer { background: var(--navy-900); color: var(--navy-300); }
.footer__inner { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; font-size: 14px; padding-top: 40px; padding-bottom: 40px; }
.footer__links { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
.footer__links a { color: var(--navy-250); }
.footer__links a:hover { color: #fff; }