/* Dog Star AI — site styles */
:root {
  --slate: #676E85;            /* tabs, headings, panel */
  --slate-50: rgba(103, 110, 133, 0.5); /* icon tiles */
  --slate-dark: #535970;
  --paper: #F2F2F2;            /* center panel, matches logo background */
  --ink: #111;
  --muted: #3c4050;
  --rule: #9aa0b4;
  --radius: 10px;
  --body: Aptos, "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--slate) url("../img/background.jpg") center top / cover fixed;
}
/* iOS ignores fixed backgrounds; fall back to scrolling */
@supports (-webkit-touch-callout: none) {
  body { background-attachment: scroll; background-repeat: repeat-y; background-size: 100% auto; }
}

a { color: var(--slate-dark); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid #2f6fd6; outline-offset: 2px;
}

.page {
  max-width: 980px;
  min-height: 100vh;
  margin: 0 auto;
  background: var(--paper);
  padding: 24px 48px 32px;
  display: flex;
  flex-direction: column;
}

/* Header / logo */
.site-header { text-align: center; margin-bottom: 28px; }
.site-header a { display: inline-block; }
.site-header img { width: 260px; max-width: 70vw; height: auto; display: block; }

/* Home: intro + tabs */
.home-top {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  align-items: start;
}
.intro h1 {
  color: var(--slate);
  font-size: 1.45rem;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: .02em;
}
.intro p { margin: 0 0 1em; }

/* Tabs */
.tabs { width: 100%; }
.tablist { display: flex; gap: 4px; }
.tab {
  flex: 0 0 auto;
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  background: var(--slate-dark);
  border: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 10px 26px;
  cursor: pointer;
  opacity: .85;
}
.tab[aria-selected="true"] { background: var(--slate); opacity: 1; }
.tab:hover { opacity: 1; }
.tabpanel {
  background: var(--slate);
  color: #fff;
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  padding: 20px 22px 22px;
}
.tabpanel[hidden] { display: none; }
.tabpanel p.note { margin: 0 0 14px; font-size: .95rem; }

/* Forms */
.form label { display: block; font-size: .9rem; margin: 10px 0 3px; }
.form .opt { opacity: .8; font-weight: 400; }
.form input[type="text"], .form input[type="email"], .form input[type="tel"],
.form select, .form textarea {
  width: 100%;
  font: inherit;
  font-size: .95rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid #2e3242;
  border-radius: 4px;
  padding: 7px 9px;
}
.form textarea { min-height: 96px; resize: vertical; }
.form fieldset { border: 0; padding: 0; margin: 12px 0 0; }
.form legend { font-size: .9rem; padding: 0; margin-bottom: 4px; }
.form .check { display: flex; align-items: center; gap: 8px; margin: 6px 0 0 14px; font-size: .95rem; }
.form .check input { width: 17px; height: 17px; margin: 0; }
.form .actions { display: flex; justify-content: flex-end; margin-top: 16px; }
.btn {
  font: inherit;
  font-weight: 600;
  color: var(--ink);
  background: #fff;
  border: 1px solid #2e3242;
  border-radius: 6px;
  padding: 8px 30px;
  cursor: pointer;
}
.btn:hover { background: #e9ebf1; }
.btn[disabled] { opacity: .6; cursor: wait; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.status { margin: 12px 0 0; font-size: .95rem; min-height: 1.2em; }
.status.ok { color: #e7ffe9; font-weight: 600; }
.status.err { color: #ffe0e0; font-weight: 600; }

/* Section icons */
.sections {
  list-style: none;
  margin: 40px auto 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px 20px;
  max-width: 760px;
}
.sections li { flex: 0 1 220px; text-align: center; }
.sections a { text-decoration: none; color: var(--ink); display: block; border-radius: var(--radius); padding: 6px; }
.sections a:hover .tile { background: var(--slate); color: #fff; }
.tile {
  width: 84px; height: 84px;
  margin: 0 auto 8px;
  display: grid; place-items: center;
  background: var(--slate-50);
  border: 1.5px solid var(--slate);
  border-radius: 12px;
  color: #111;
  transition: background .15s, color .15s;
}
.tile svg { width: 52px; height: 52px; }
.sections strong { display: block; font-size: 1rem; }
.sections span { display: block; font-size: .88rem; line-height: 1.35; color: var(--muted); }

/* Content pages */
.banner {
  position: relative;
  aspect-ratio: 3.6 / 1;
  margin: 0 -48px 28px;
  background: var(--paper);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.banner img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .4;               /* 60% transparency */
}
.banner h1 {
  position: relative;
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 800;
  color: #000;
  text-align: center;
  padding: 0 16px;
}
.content p { margin: 0 0 1.1em; }
.content .lead strong { font-size: 1.3rem; }
.content .tagline { font-style: italic; color: var(--muted); margin-top: -.3em; }
.content ol, .content ul { padding-left: 1.4em; margin: 0 0 1.1em; }
.content ol li, .content ul li { margin-bottom: .5em; }
.content h3 { font-size: 1.08rem; margin: 1.3em 0 .35em; color: var(--ink); }
.content mark.todo { background: #fff3a8; padding: 0 3px; border-radius: 3px; }
.content .disclaimer { font-size: .85rem; color: var(--muted); font-style: italic; margin-top: 2em; }
.legal-title { color: var(--slate); font-size: 1.6rem; margin: 0 0 .4em; }
.content h2 { font-size: 1.25rem; margin: 1.6em 0 .4em; color: var(--slate-dark); scroll-margin-top: 16px; }

/* Footer */
.site-footer {
  margin-top: auto;
  padding-top: 40px;
}
.site-footer hr { border: 0; border-top: 1px solid var(--rule); margin: 0 0 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; font-size: .82rem; }
.site-footer li::before { content: "› "; color: var(--slate); font-weight: 700; }
.site-footer a { color: var(--ink); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* Phones and small tablets */
@media (max-width: 820px) {
  .page { padding: 18px 16px 24px; }
  .home-top { grid-template-columns: 1fr; gap: 24px; }
  .banner { margin: 0 -16px 22px; }
  .sections li { flex-basis: 42%; }
}
@media (max-width: 380px) {
  .tab { padding: 10px 18px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }