/* shared.css — platform-wide base.
 *
 * Brand: creme-warmbraun (alchemy-fox look).
 * Loaded by every platform page before its page-specific stylesheet.
 */

:root {
  --brand-bg-deep: #e9dfce;
  --brand-bg-base: #f5efe3;
  --brand-bg-elevated: #fbf6ec;
  --brand-bg-card: #ffffff;
  --brand-border: #d8cdb6;
  --brand-border-strong: #b09a71;
  --brand-text-primary: #3a3633;
  --brand-text-secondary: #6e665d;
  --brand-text-muted: #978d80;
  --brand-accent: #b8934e;
  --brand-accent-soft: rgba(184, 147, 78, 0.12);
  --brand-accent-strong: #a07a3a;

  --brand-radius-sm: 6px;
  --brand-radius-md: 12px;
  --brand-radius-lg: 20px;
  --brand-radius-pill: 999px;

  --brand-space-1: 0.5rem;
  --brand-space-2: 1rem;
  --brand-space-3: 1.5rem;
  --brand-space-4: 2.5rem;
  --brand-space-5: 4rem;

  --brand-font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --brand-font-serif:  "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;

  --brand-shadow-sm: 0 1px 2px rgba(58, 54, 51, 0.06);
  --brand-shadow-md: 0 8px 24px -12px rgba(58, 54, 51, 0.18);
  --brand-shadow-lg: 0 24px 60px -30px rgba(58, 54, 51, 0.30);

  --brand-max-width: 1200px;
}

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

html {
  color-scheme: light;
  background: var(--brand-bg-deep);
}

body {
  margin: 0;
  font-family: var(--brand-font-system);
  color: var(--brand-text-primary);
  background: var(--brand-bg-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { font-family: var(--brand-font-serif); letter-spacing: 0.005em; line-height: 1.15; margin: 0 0 var(--brand-space-2); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 500; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 500; }
h3 { font-size: 1.25rem; font-weight: 600; }

p { margin: 0 0 var(--brand-space-2); }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

img { max-width: 100%; height: auto; display: block; }

.container {
  width: min(100%, var(--brand-max-width));
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  border-radius: var(--brand-radius-pill);
  border: 1px solid var(--brand-accent);
  background: var(--brand-accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--brand-shadow-sm);
}
.btn:hover { background: var(--brand-accent-strong); border-color: var(--brand-accent-strong); text-decoration: none; transform: translateY(-1px); box-shadow: var(--brand-shadow-md); }
.btn:focus-visible { outline: 2px solid var(--brand-accent-strong); outline-offset: 2px; }

.btn-ghost {
  background: transparent;
  color: var(--brand-text-primary);
  border-color: var(--brand-border-strong);
}
.btn-ghost:hover { background: var(--brand-accent-soft); color: var(--brand-text-primary); border-color: var(--brand-accent); }

.btn-sm { padding: 0.45rem 0.9rem; font-size: 0.9rem; }
.btn-lg { padding: 0.95rem 1.75rem; font-size: 1.05rem; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 239, 227, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--brand-border);
}
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
  gap: 1rem;
}
.site-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--brand-font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--brand-text-primary);
}
.site-nav__brand:hover { text-decoration: none; }
.site-nav__brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--brand-accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  font-weight: 700;
}
.site-nav__links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}
.site-nav__links a {
  color: var(--brand-text-secondary);
  font-weight: 500;
}
.site-nav__links a:hover {
  color: var(--brand-text-primary);
  text-decoration: none;
}
@media (max-width: 640px) {
  .site-nav__links a:not(.btn) { display: none; }
}

.site-footer {
  margin-top: var(--brand-space-5);
  border-top: 1px solid var(--brand-border);
  padding-block: var(--brand-space-4);
  color: var(--brand-text-muted);
  background: var(--brand-bg-elevated);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: center;
}
.site-footer nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.site-footer a { color: var(--brand-text-secondary); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  border-radius: var(--brand-radius-pill);
  background: var(--brand-accent-soft);
  color: var(--brand-accent-strong);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.card {
  background: var(--brand-bg-card);
  border: 1px solid var(--brand-border);
  border-radius: var(--brand-radius-lg);
  padding: var(--brand-space-3);
  box-shadow: var(--brand-shadow-sm);
}

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

.skip-link {
  position: absolute; left: -9999px; top: 0;
  padding: 0.5rem 1rem; background: var(--brand-text-primary); color: #fff;
  z-index: 100;
}
.skip-link:focus { left: 0; text-decoration: none; }