@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;600;700&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600&display=swap");

:root {
  --bg: #f5efe4;
  --surface: #fffdf8;
  --surface-soft: #f3eadb;
  --ink: #1f1d1a;
  --ink-soft: #5b554c;
  --line: #ddcdb4;
  --accent: #b25a2e;
  --accent-strong: #8f3f18;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(47, 33, 20, 0.08);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Source Serif 4", "Georgia", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, #fff7ea 0%, rgba(255, 247, 234, 0) 36%),
    radial-gradient(circle at 95% 15%, #ebdcc4 0%, rgba(235, 220, 196, 0) 32%),
    var(--bg);
  line-height: 1.55;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.layout {
  width: min(1200px, 94vw);
  margin: 1.75rem auto;
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 1rem;
}

.sidebar {
  position: sticky;
  top: 1rem;
  align-self: start;
  background: linear-gradient(170deg, var(--surface), var(--surface-soft));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: conic-gradient(from 40deg, #c07a4f, #e4bf93, #b7683d, #c07a4f);
  border: 1px solid #b56f46;
}

.brand-text {
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-note {
  margin: 0.45rem 0 0.95rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav a {
  border-radius: 8px;
  padding: 0.44rem 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
  font-size: 0.93rem;
}

.nav a:hover,
.nav a[aria-current="page"] {
  background: #f7ead9;
  color: #48210f;
}

.main {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem;
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.1;
}

.hero p {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
  color: var(--accent);
  font-weight: 700;
}

.grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.card,
.panel,
.post-card,
.tool-shell {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fffdfa;
  padding: 0.9rem;
}

.card h2,
.panel h2,
.post-card h2,
.tool-shell h2 {
  margin: 0 0 0.35rem;
  font-size: 1.18rem;
}

.post-card p,
.tool-shell p,
.panel li,
.post-content p,
.post-content li {
  margin: 0.45rem 0;
  color: #4c463e;
}

.post-content ul {
  padding-left: 1.2rem;
  margin: 0.5rem 0;
}

.post-content li {
  font-size: 0.95rem;
  line-height: 1.4;
}

.card-link {
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
}

.panel {
  margin-top: 0.9rem;
}

.post-list {
  margin-top: 1rem;
  display: grid;
  gap: 0.8rem;
}

.post-meta {
  margin: 0 0 0.2rem;
  font-size: 0.84rem;
  color: #7a7062;
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
}

.tool-placeholder {
  margin-top: 0.65rem;
  padding: 0.85rem;
  border: 1px dashed #c49b75;
  border-radius: 10px;
  background: #fcf5ea;
}

.hidden {
  display: none;
}

.footer {
  margin-top: 1.1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  color: #6c6256;
  font-size: 0.92rem;
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
}

.link-list {
  padding-left: 1.2rem;
  margin: 0.5rem 0;
}

.link-list li {
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
  color: #4c463e;
}

.footer p {
  margin: 0.2rem 0;
}

.reveal {
  animation: rise 420ms ease both;
}

@keyframes rise {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 920px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    animation: none;
  }
}