/* Base: reset, typography, page chrome (header, footer, flash). */

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(52rem 30rem at 110% -8%, rgba(217, 142, 43, 0.10), transparent 60%),
    radial-gradient(46rem 28rem at -12% 12%, rgba(94, 126, 78, 0.09), transparent 60%),
    var(--paper);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 var(--space-3); font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); }
h2 { font-size: clamp(1.3rem, 3vw, 1.6rem); }
h3 { font-size: 1.13rem; }
p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

a { color: var(--teal); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--teal-deep); }

code, pre, .mono { font-family: var(--font-mono); }

img, svg { max-width: 100%; height: auto; }

button { font: inherit; color: inherit; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--space-4); top: -3rem;
  background: var(--ink); color: var(--ink-on-dark);
  padding: var(--space-2) var(--space-4);
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  z-index: 50;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 0; }

/* ---------- Header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(250, 242, 229, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
}
.brand {
  display: inline-flex; align-items: center; gap: var(--space-2);
  color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.12rem;
}
.brand .logo-mark { color: var(--ink); transition: transform var(--dur-med) var(--ease-out); }
.brand:hover .logo-mark { transform: rotate(-8deg); }

.site-nav { display: flex; align-items: center; }
.nav-links { display: flex; align-items: center; gap: var(--space-4); }
.nav-links > a {
  color: var(--ink-soft); text-decoration: none; font-weight: 500; font-size: 0.95rem;
  padding: var(--space-1) var(--space-1);
  border-radius: var(--radius-s);
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-links > a:hover { color: var(--ink); }
.nav-user {
  font-size: 0.85rem; color: var(--ink-faint);
  border-left: 1px solid var(--line); padding-left: var(--space-4);
  white-space: nowrap;
}
.nav-logout { margin: 0; }

.link-button {
  background: none; border: none; padding: 0; cursor: pointer;
  color: var(--ink-soft); font-weight: 500; font-size: 0.95rem;
  text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 2px;
  transition: color var(--dur-fast) var(--ease-out);
}
.link-button:hover { color: var(--ink); text-decoration-color: currentColor; }

.nav-toggle { display: none; }

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 5px;
    background: none; border: 1px solid var(--line-strong); border-radius: var(--radius-s);
    padding: 9px 10px; cursor: pointer;
  }
  .nav-toggle-bar { width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform var(--dur-fast) var(--ease-out); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child { transform: translateY(3.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child { transform: translateY(-3.5px) rotate(-45deg); }

  .nav-links {
    display: none;
    position: absolute; top: 100%; right: var(--space-4); left: var(--space-4);
    flex-direction: column; align-items: stretch; gap: var(--space-2);
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-m);
    box-shadow: var(--shadow-lift);
    padding: var(--space-4);
  }
  .nav-links.open { display: flex; }
  .nav-links > a { padding: var(--space-2); }
  .nav-user { border-left: none; padding-left: var(--space-2); }
}

/* ---------- Flash messages ---------- */

.flash { border-bottom: 1px solid var(--line); }
.flash-inner {
  max-width: var(--content-max); margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  font-weight: 500;
}
.flash-success, .flash-celebrate { background: var(--sage-wash); color: var(--sage-deep); }
.flash-notice { background: var(--amber-wash); color: #8A5A14; }
.flash-error { background: var(--clay-wash); color: var(--clay); }
.flash-dismiss {
  background: none; border: none; cursor: pointer; font-size: 1.3rem; line-height: 1;
  color: inherit; opacity: 0.6; padding: 0 var(--space-1);
  transition: opacity var(--dur-fast) var(--ease-out);
}
.flash-dismiss:hover { opacity: 1; }

/* ---------- Main and footer ---------- */

.site-main { flex: 1; width: 100%; }

.page {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-8);
}
.page-narrow { max-width: 760px; }

.site-footer { border-top: 1px solid var(--line); background: rgba(244, 234, 217, 0.6); }
.site-footer-inner {
  max-width: var(--content-max); margin: 0 auto;
  padding: var(--space-5) var(--space-4);
  display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; justify-content: space-between;
}
.footer-note {
  display: flex; align-items: center; gap: var(--space-2);
  color: var(--ink-faint); font-size: 0.85rem; margin: 0; max-width: 40rem;
}
.footer-note .logo-mark { width: 22px; height: 22px; flex-shrink: 0; }
.footer-links { display: flex; gap: var(--space-4); font-size: 0.85rem; }

/* ---------- Error pages ---------- */

.error-page { display: grid; place-items: center; padding: var(--space-8) var(--space-4); }
.error-card {
  text-align: center; max-width: 30rem;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-l);
  box-shadow: var(--shadow-soft);
  padding: var(--space-7) var(--space-6);
}
.error-card .mascot { margin-bottom: var(--space-4); color: var(--ink); }
.error-actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; margin-top: var(--space-5); }

/* ---------- Motion preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}