/* ==========================================================================
   Layr — Light editorial aesthetic
   Warm off-white canvas, deep ink text, teal accents
   ========================================================================== */

/* --- Palette & tokens --- */
:root {
  --bg-primary: #faf9f7;
  --bg-card: #ffffff;
  --bg-subtle: #f2f0ed;
  --border: #e2dfda;
  --border-hover: #c8c4be;

  --ink-900: #1a1a1a;
  --ink-700: #3d3d3d;
  --ink-500: #6b6b6b;
  --ink-400: #8a8a8a;

  --accent: #0f7b6c;
  --accent-hover: #0a6358;
  --accent-light: #e8f5f2;
  --accent-muted: rgba(15, 123, 108, 0.08);

  /* Pico overrides */
  --pico-primary: var(--accent);
  --pico-primary-hover: var(--accent-hover);
  --pico-background-color: var(--bg-primary);
  --pico-card-background-color: var(--bg-card);
  --pico-color: var(--ink-900);

  /* Custom tokens */
  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --radius: 8px;
  --container-max: 1080px;
}

/* --- Base --- */
html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--ink-900);
  position: relative;
  overflow-x: hidden;
}

/* Subtle dot-grid background texture */
.dot-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.4;
}

body > *:not(.dot-grid) {
  position: relative;
  z-index: 1;
}

.container {
  display: flex;
  flex-direction: column;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-hover);
}

/* --- Header --- */
header {
  background: rgba(250, 249, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

header nav {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-900) !important;
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  object-fit: contain;
}

.brand-text {
  position: relative;
  top: 1px;
}

.nav-link {
  color: var(--ink-500) !important;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--ink-900) !important;
}

.nav-cta {
  font-size: 0.85rem !important;
  padding: 8px 20px !important;
  border-radius: 6px !important;
  background: var(--accent) !important;
  color: #fff !important;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: none !important;
  transition: background 0.2s, transform 0.15s !important;
}

.nav-cta:hover {
  background: var(--accent-hover) !important;
  transform: translateY(-1px);
}

/* --- Hero --- */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.3;
  color: var(--ink-900);
  max-width: 900px;
  margin: 0 auto;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--ink-500);
  margin-top: 24px;
  letter-spacing: 0.01em;
}

.section-tagline {
  color: var(--ink-500);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.rotate-wrap {
  display: block;
  position: relative;
  overflow: hidden;
  height: 2.6em;
}

.rotate-slot {
  display: block;
  color: var(--accent);
  font-weight: 400;
  transition: opacity 0.35s ease, transform 0.35s ease;
  transform: translateY(0);
  opacity: 1;
}

.rotate-slot.out-up {
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.rotate-slot.in-below {
  opacity: 0;
  transform: translateY(100%);
  transition: none;
}

/* --- Demo section --- */
.demo {
  padding: 40px 0 60px;
}

.demo .flowchart {
  gap: 32px;
  align-items: start;
}

.demo .flowchart > div {
  display: flex;
  flex-direction: column;
}

.demo h2 {
  font-size: 1.1rem;
  font-family: var(--font-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-400);
  margin-bottom: 16px;
}

.demo blockquote {
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px 28px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-style: italic;
  color: var(--ink-900);
  margin: 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.demo pre {
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  padding: 24px;
  margin: 0;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.65;
}

.demo code {
  color: #c8d6e5;
  background: none;
}

/* --- Use cases cards --- */
.use-cases {
  padding: 60px 0;
}

.use-cases h2 {
  margin-bottom: 28px;
}

.card-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.3s, transform 0.2s, box-shadow 0.3s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.card-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-muted);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}

.card p {
  color: var(--ink-500);
  line-height: 1.6;
  margin: 0;
}

/* --- Comparison table --- */
.comparison {
  padding: 60px 0 80px;
}

.comparison h2 {
  margin-bottom: 28px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.comparison table {
  margin: 0;
  border-collapse: collapse;
  width: 100%;
  background: var(--bg-card);
}

.comparison th,
.comparison td {
  padding: 14px 20px;
  text-align: left;
  border-color: var(--border);
  font-size: 0.9rem;
}

.comparison thead {
  background: var(--bg-subtle);
}

.comparison th {
  font-family: var(--font-body);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-400);
}

.comparison th.highlight-col,
.comparison td.highlight-col {
  color: var(--accent);
  font-weight: 600;
}

.comparison tbody tr {
  transition: background 0.15s;
}

.comparison tbody tr:hover {
  background: var(--bg-subtle);
}

/* --- Blog list --- */
.blog-list {
  padding: 60px 0;
}

.blog-list h1 {
  margin-bottom: 40px;
}

.blog-entry {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.blog-entry:first-of-type {
  border-top: 1px solid var(--border);
}

.blog-entry time {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-400);
}

.blog-entry h2 {
  font-size: 1.6rem;
  margin: 6px 0 8px;
}

.blog-entry p {
  color: var(--ink-500);
  margin: 0;
}

/* --- Post --- */
.post {
  padding: 60px 0;
  max-width: 720px;
}

.post-header {
  margin-bottom: 40px;
}

.post-header time {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-400);
}

.post-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 8px 0 12px;
}

.post-author {
  color: var(--accent);
  font-weight: 600;
  margin: 0;
}

.post-body {
  line-height: 1.75;
  color: var(--ink-700);
}

.post-body h2, .post-body h3 {
  color: var(--ink-900);
  margin-top: 2em;
}

/* --- 404 --- */
.not-found {
  padding: 120px 0;
  text-align: center;
}

.not-found-code {
  font-family: var(--font-display);
  font-size: clamp(6rem, 15vw, 12rem);
  line-height: 1;
  color: var(--border);
  margin: 0;
}

.not-found-msg {
  color: var(--ink-400);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* --- Footer --- */
footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 28px 0;
  background: transparent;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-icon {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  object-fit: contain;
}

.footer-meta {
  font-size: 0.82rem;
  color: var(--ink-400);
}

.footer-meta a {
  color: var(--ink-400);
}

.footer-meta a:hover {
  color: var(--accent);
}

.footer-sep {
  margin: 0 8px;
}

/* --- Section alternation (override Pico) --- */
section:nth-of-type(even) {
  background: transparent;
}

/* --- Reveal animation --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children in demo */
#example-input.reveal { transition-delay: 0.1s; }
#example-output.reveal { transition-delay: 0.35s; }

/* Hero entrance */
.hero {
  animation: heroIn 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    padding: 60px 0 50px;
  }

  .demo .flowchart {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  header nav {
    flex-direction: column;
    gap: 12px;
  }
}