@import url("assets/brand/friends-design-tokens.css");

:root {
  --bg: var(--friends-color-bg);
  --bg-deep: var(--friends-color-bg-alt);
  --surface: rgba(255, 253, 248, 0.9);
  --surface-strong: rgba(255, 255, 255, 0.78);
  --border: rgba(31, 26, 21, 0.12);
  --text: var(--friends-color-text-primary);
  --muted: var(--friends-color-text-secondary);
  --accent: var(--friends-color-accent);
  --accent-soft: rgba(242, 162, 58, 0.14);
  --accent-text: var(--friends-color-accent-text);
  --radius-xl: var(--friends-radius-shell);
  --radius-lg: var(--friends-radius-panel);
  --radius-md: var(--friends-radius-card);
  --max-width: 980px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(242, 162, 58, 0.16), transparent 28%),
    linear-gradient(180deg, var(--friends-color-bg-warm) 0%, var(--bg) 36%, #f4ecdf 100%);
  font-family: var(--friends-font-sans);
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("assets/graphics/soft-grid.svg") center top / 1440px auto repeat-y;
  opacity: 0.42;
  pointer-events: none;
}

a {
  color: inherit;
}

.page-shell {
  position: relative;
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(10px);
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 999px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(117, 92, 64, 0.12);
  background: #fff;
}

.brand-name {
  display: block;
  font-size: 1.08rem;
  font-weight: 540;
}

.brand-subtitle {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pill-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.68);
  text-decoration: none;
}

.hero {
  display: grid;
  gap: 18px;
  margin-top: 18px;
  padding: 30px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.85rem, 3.5vw, 2.6rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 560;
}

.hero p {
  margin: 0;
  max-width: 68ch;
  color: var(--muted);
}

.hero-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid rgba(117, 92, 64, 0.12);
  color: var(--muted);
  font-size: 0.95rem;
}

.toc {
  margin-top: 18px;
  padding: 22px;
}

.toc h2,
.content h2 {
  margin: 0 0 14px;
  font-size: 1.24rem;
  font-weight: 540;
}

.toc-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.toc-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(117, 92, 64, 0.12);
  text-decoration: none;
}

.content {
  margin-top: 18px;
  padding: 18px;
}

.content section {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(117, 92, 64, 0.12);
}

.content section + section {
  margin-top: 16px;
}

.content h3 {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 540;
}

.content p {
  margin: 0;
}

.content p + p,
.content ul + p,
.content p + ul,
.content ul + ul {
  margin-top: 14px;
}

.content ul {
  margin: 0;
  padding-left: 20px;
}

.content li + li {
  margin-top: 10px;
}

.lang-label {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  padding: 0 12px;
  min-height: 32px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-size: 0.85rem;
  font-weight: 540;
}

.appendix-links a {
  overflow-wrap: anywhere;
}

@media (max-width: 820px) {
  .topbar {
    position: static;
    border-radius: 24px;
    flex-wrap: wrap;
  }

  .hero,
  .toc,
  .content {
    border-radius: 24px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(calc(100% - 20px), var(--max-width));
    padding-top: 10px;
  }

  .hero,
  .content section {
    padding: 22px;
  }

  .hero h1 {
    font-size: clamp(2rem, 11vw, 3rem);
  }

}