:root {
  --bg: #f5f8f8;
  --card: #ffffff;
  --text: #14232b;
  --muted: #5d6f78;
  --line: #dbe4e7;
  --primary: #0f766e;
  --good: #15803d;
  --good-bg: #e7f6ec;
  --bad: #b91c1c;
  --bad-bg: #fdecec;
  --pick: #e0f2f1;
}
/* Theme: follows the system unless the user picks one (data-theme on <html>, set by the toggle). */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
      --bg: #0e171b;
      --card: #162329;
      --text: #e8eff1;
      --muted: #9bb0b8;
      --line: #29393f;
      --primary: #2dd4bf;
      --good: #4ade80;
      --good-bg: #123320;
      --bad: #f87171;
      --bad-bg: #3a1717;
      --pick: #12353a;
  }
}
:root[data-theme="dark"] {
    --bg: #0e171b;
    --card: #162329;
    --text: #e8eff1;
    --muted: #9bb0b8;
    --line: #29393f;
    --primary: #2dd4bf;
    --good: #4ade80;
    --good-bg: #123320;
    --bad: #f87171;
    --bad-bg: #3a1717;
    --pick: #12353a;
}
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}
h1 { font-size: 26px; margin: 0 0 4px; }
h2 { font-size: 19px; margin: 0; }
p { margin: 0; }
a { color: var(--primary); }

.page { max-width: 760px; margin: 0 auto; padding: 20px 16px 80px; display: flex; flex-direction: column; gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.muted { color: var(--muted); font-size: 14px; }
.error { color: var(--bad); }
.row { display: flex; gap: 8px; }
.row > * { flex: 1; }
.between { display: flex; justify-content: space-between; gap: 12px; }

.btn {
  min-height: 46px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--primary);
  background: var(--primary); color: #fff; font-size: 16px; font-weight: 600; cursor: pointer;
}
.btn.secondary { background: var(--card); color: var(--primary); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:focus-visible, .opt:focus-visible, input:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn { color: #06201c; } :root:not([data-theme="light"]) .btn.secondary { color: var(--primary); } }
:root[data-theme="dark"] .btn { color: #06201c; }
:root[data-theme="dark"] .btn.secondary { color: var(--primary); }

input.text {
  width: 100%; min-height: 46px; padding: 0 14px; font-size: 16px; color: var(--text);
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
}

/* layout: left sidebar on wide screens, hamburger dropdown on narrow ones */
.shell { display: flex; min-height: 100vh; }
.content { flex: 1; min-width: 0; }
.content .page { margin: 0 auto; }
.side {
  width: 232px; flex: none; position: sticky; top: 0; height: 100vh; align-self: flex-start;
  background: var(--card); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 4px; padding: 20px 12px;
}
.side-head { display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 800; font-size: 18px; padding: 4px 12px 18px; white-space: nowrap; }
.burger, .scrim { display: none; }
.links { display: flex; flex-direction: column; gap: 4px; }
.side a.tab {
  padding: 11px 12px; border-radius: 10px; text-decoration: none; color: var(--muted); font-weight: 600;
  border-left: 3px solid transparent;
}
.side a.tab:hover { background: var(--bg); }
.side a.tab.active { color: var(--primary); background: var(--pick); border-left-color: var(--primary); }
.side a.tab:focus-visible, .burger:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .side { width: 100%; height: auto; padding: 0; z-index: 20; border-right: 0; border-bottom: 1px solid var(--line); }
  .side-head { padding: 4px 8px 4px 16px; min-height: 56px; }
  .brand { padding: 0; }
  .burger {
    display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px;
    background: none; border: 0; border-radius: 10px; color: var(--text); cursor: pointer;
  }
  .links {
    display: none; position: absolute; top: 100%; left: 0; right: 0; z-index: 2; padding: 8px 12px 12px;
    background: var(--card); border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgb(0 0 0 / 0.18);
  }
  .side.open .links { display: flex; }
  .side.open .scrim { display: block; position: fixed; inset: 0; z-index: 1; background: rgb(0 0 0 / 0.35); border: 0; cursor: default; }
  .side a.tab { padding: 14px 12px; }
}

/* test */
.progress { height: 6px; background: var(--line); border-radius: 3px; }
.progress > div { height: 6px; background: var(--primary); border-radius: 3px; }
.opt {
  display: flex; gap: 12px; text-align: left; width: 100%; padding: 14px; border-radius: 12px; font-size: 16px;
  border: 2px solid var(--line); background: var(--card); color: var(--text); cursor: pointer;
}
.opt.on { border-color: var(--primary); background: var(--pick); }
.opt b { width: 20px; flex: none; }

/* review */
.review { border-width: 1px; }
.review.ok { border-color: var(--good); }
.review.no { border-color: var(--bad); }
.review .head { background: none; border: 0; padding: 0; text-align: left; color: inherit; font: inherit; cursor: pointer; width: 100%; }
.tag-ok { color: var(--good); font-weight: 700; }
.tag-no { color: var(--bad); font-weight: 700; }
.ropt { padding: 10px; border-radius: 8px; background: var(--bg); display: flex; flex-direction: column; gap: 4px; }
.ropt.correct { background: var(--good-bg); }
.ropt.picked { background: var(--bad-bg); }
.score { text-align: center; font-size: 52px; font-weight: 800; }
.bar { height: 8px; background: var(--line); border-radius: 4px; }
.bar > div { height: 8px; border-radius: 4px; }
ul.tight { margin: 4px 0; padding-left: 20px; }
.centered { min-height: 60vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 10px; padding: 24px; }
.spinner { width: 34px; height: 34px; border: 4px solid var(--line); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 3s; } }

/* top-right actions (theme toggle + sign out) */
.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; justify-content: flex-end; align-items: center; gap: 8px;
  padding: 12px 20px 0; pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.tb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 40px; min-width: 40px; padding: 0 12px;
  border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text);
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
}
.tb-btn:hover { border-color: var(--primary); }
.tb-btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
@media (max-width: 760px) {
  /* sits in the nav bar, left of the hamburger */
  .topbar { position: fixed; top: 0; right: 60px; height: 56px; padding: 0; z-index: 25; }
  .tb-btn { height: 38px; padding: 0 10px; }
}

/* Laravel/Livewire additions */
[x-cloak] { display: none !important; }
form.inline { display: inline; margin: 0; }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt { position: relative; }
.opt:has(input:checked) { border-color: var(--primary); background: var(--pick); }
.opt:has(input:focus-visible) { outline: 3px solid var(--primary); outline-offset: 2px; }
a.btn { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
.overlay { position: fixed; inset: 0; z-index: 50; background: var(--bg); }

/* difficulty badge on review cards */
.review-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.diff {
  flex: none; display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg); color: var(--muted); font-size: 12px; font-weight: 700; white-space: nowrap;
}
.diff .dots { display: inline-flex; gap: 2px; }
.diff .dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--line); }
.diff .dots i.on { background: var(--primary); }

/* study plan card */
.plan .eyebrow { font-size: 13px; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; color: var(--primary); }
.plan-form { display: flex; flex-direction: column; gap: 10px; padding: 12px; border-radius: 10px; background: var(--bg); border: 1px solid var(--line); }
.steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; counter-reset: step; }
.steps li {
  counter-increment: step; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg);
}
.steps li > div { flex: 1; min-width: 0; }
.steps li > div::before { content: counter(step) "."; font-weight: 800; color: var(--primary); margin-right: 6px; float: left; }
.steps li .btn { flex: none; min-height: 40px; padding: 0 18px; }

/* brand */
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { flex: none; border-radius: 7px; }
.brand-prep { color: var(--primary); margin-left: -4px; }

/* ---------------------------------------------------------------- public landing page */
.site { background: var(--bg); }
.site-wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--card) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header-inner { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.site-header .brand { padding: 0; color: var(--text); text-decoration: none; font-size: 19px; }
.site-links { display: flex; gap: 4px; margin-left: 12px; }
.site-links a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 15px; padding: 8px 10px; border-radius: 8px; }
.site-links a:hover { color: var(--text); background: var(--bg); }
.site-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.site-actions a.tb-btn { text-decoration: none; }
.site-cta-sm { min-height: 40px; font-size: 15px; }

.eyebrow { font-size: 13px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--primary); }
.eyebrow.center, .section-title { text-align: center; }
.section-title { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.15; margin: 6px 0 32px; letter-spacing: -0.02em; }
.section-title.left { text-align: left; margin-bottom: 14px; }

.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding-top: 64px; padding-bottom: 72px; }
.hero-copy { display: flex; flex-direction: column; gap: 18px; }
.hero-title { font-size: clamp(36px, 5.2vw, 58px); line-height: 1.05; letter-spacing: -0.03em; margin: 0; }
.hero-title .hl { color: var(--primary); }
.hero-sub { font-size: 19px; line-height: 1.55; color: var(--muted); max-width: 34em; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-ctas .btn { padding: 0 22px; }
.hero-demo { margin: 0; display: flex; flex-direction: column; gap: 10px; }
.hero-demo .card { box-shadow: 0 24px 60px -24px rgb(15 118 110 / 0.45); gap: 10px; }
.hero-demo figcaption { text-align: center; font-size: 13px; }
.demo-more { font-size: 13px; font-style: italic; }

.site-section { padding: 72px 0; }
.site-section.alt { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.site-section.alt .card { background: var(--bg); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { gap: 10px; padding: 22px; }
.feature h3, .how-steps h3 { font-size: 18px; margin: 0; }
.feature-icon { width: 42px; height: 42px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; background: var(--pick); color: var(--primary); }

.how-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.how-steps li { padding: 22px; gap: 10px; }
.how-num { width: 34px; height: 34px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--primary); color: #fff; font-weight: 800; }
:root[data-theme="dark"] .how-num { color: #06201c; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .how-num { color: #06201c; } }

.coverage { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.cov-row { display: flex; flex-direction: column; gap: 4px; font-size: 14px; }

.faq { max-width: 760px; display: flex; flex-direction: column; gap: 12px; }
.faq details { padding: 0; gap: 0; }
.faq summary { cursor: pointer; padding: 18px 20px; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--primary); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 20px 18px; }
.faq summary:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 12px; }

.cta-band { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 12px; }
.cta-band h2 { font-size: clamp(26px, 3.4vw, 34px); margin: 4px 0 0; letter-spacing: -0.02em; }
.cta-band img { border-radius: 14px; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 14px; }
.site-footer .site-wrap { display: flex; flex-direction: column; gap: 6px; }

@media (max-width: 900px) {
  .hero, .coverage { grid-template-columns: 1fr; }
  .hero { padding-top: 40px; gap: 36px; }
  .feature-grid, .how-steps { grid-template-columns: 1fr 1fr; }
  .site-links { display: none; }
}
@media (max-width: 600px) {
  .feature-grid, .how-steps { grid-template-columns: 1fr; }
  .site-section { padding: 52px 0; }
  .site-header .brand { font-size: 17px; }
  .site-header .brand img { width: 26px; height: 26px; }
  .site-actions { gap: 6px; }
  .site-actions a.tb-btn { padding: 0 10px; }
  .site-cta-sm { padding: 0 12px; }
}
.site-actions .tb-btn, .site-actions .btn { white-space: nowrap; }
.site-section, .hero { scroll-margin-top: 72px; }
@media (max-width: 600px) {
  .site-header-inner { gap: 8px; }
  .site-header .theme-toggle { display: none; } /* the system theme still applies; the toggle is inside the app too */
}
@media (max-width: 420px) {
  .site-header .brand-text { display: none; } /* logo mark only; both buttons stay */
}
.hero > *, .coverage > * { min-width: 0; } /* let grid columns shrink on very narrow screens */