/* Tightline site: one shared stylesheet, no build step. Palette matches the app. */
:root {
  --navy: #0e3a52;
  --navy-2: #123a51;
  --teal: #0b6e80;
  --sand: #f7f6f2;
  --ink: #0f1a20;
  --muted: #4a5a63;
  --line: #dcd9cf;
  --card: #ffffff;
  --warn-bg: #fdf1dc;
  --warn-line: #e6b566;
  --danger: #a4322a;
  --radius: 14px;
  --max: 46rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sand);
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--teal); text-underline-offset: 2px; }
a:hover { color: var(--navy); }

/* ---------- header / nav ---------- */
.site-header {
  background: var(--navy-2);
  color: #fff;
}
.site-header .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 0.95rem; }
.site-nav a { color: #cfe6ec; text-decoration: none; padding: 4px 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: #fff; text-decoration: underline; }

/* ---------- main ---------- */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px 16px 48px;
}

h1, h2, h3 { color: var(--navy); line-height: 1.25; }
h1 { font-size: 1.9rem; margin: 0.4em 0 0.3em; }
h2 { font-size: 1.35rem; margin: 1.8em 0 0.5em; padding-top: 0.4em; border-top: 1px solid var(--line); }
h3 { font-size: 1.1rem; margin: 1.3em 0 0.4em; }
p, ul, ol { margin: 0 0 1em; }
li { margin-bottom: 0.35em; }

.lead { font-size: 1.12rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.92rem; }

.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--teal) 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px 20px;
  margin-bottom: 24px;
  text-align: center;
}
.hero img { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25); }
.hero h1 { color: #fff; margin-top: 0.5em; }
.hero p { color: #e3f1f4; max-width: 34rem; margin-left: auto; margin-right: auto; }

.button {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: 999px;
  min-height: 48px;
}
.button:hover { background: var(--navy); color: #fff; }
.hero .button { background: #fff; color: var(--navy); }
.button.danger { background: var(--danger); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 0 0 16px;
}
.card > :last-child { margin-bottom: 0; }

.grid { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } }
.grid .card { margin: 0; }
.grid h3 { margin-top: 0; }

.note {
  background: var(--warn-bg);
  border-left: 4px solid var(--warn-line);
  border-radius: 8px;
  padding: 12px 14px;
  margin: 0 0 1em;
}

.todo {
  background: #fff3a8;
  color: #5a4a00;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85em;
  padding: 1px 5px;
  border-radius: 4px;
}

.table-wrap { overflow-x: auto; margin: 0 0 1em; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; background: var(--card); }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border: 1px solid var(--line); }
th { background: #eef4f5; color: var(--navy); }

details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin: 0 0 10px; }
summary { cursor: pointer; font-weight: 600; color: var(--navy); min-height: 28px; }
details[open] summary { margin-bottom: 8px; }

.toc { font-size: 0.95rem; }
.toc ol { padding-left: 1.3em; margin-bottom: 0; }

#delete-app { margin: 16px 0; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
.site-footer .inner { max-width: var(--max); margin: 0 auto; padding: 18px 16px 32px; }
.site-footer a { color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-bottom: 8px; }

@media (max-width: 420px) {
  body { font-size: 16px; }
  h1 { font-size: 1.6rem; }
}

/* Forms (delete-account.html) */
.form { display: grid; gap: 10px; margin: 12px 0; max-width: 420px; }
.form label { font-weight: 600; color: #0F1A20; }
.form input { font: inherit; font-size: 17px; padding: 12px 14px; border: 1px solid #D5DDE2; border-radius: 12px; background: #fff; color: #0F1A20; }
.form input:focus { outline: 3px solid #D8F0F3; border-color: #0B6E80; }
.btn { font: inherit; font-weight: 700; font-size: 16px; padding: 12px 18px; border-radius: 12px; border: 0; background: #0B6E80; color: #fff; cursor: pointer; }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-ghost { background: transparent; color: #0B6E80; padding-left: 0; }
.btn-danger { background: #B3261E; }
.form-msg { padding: 12px 14px; border-radius: 12px; background: #DCE8F7; color: #0F1A20; }
.form-msg.error { background: #FADCD9; }
.form-msg.ok { background: #DCF2E6; }