/* ═══════════════════════════════════════════════════════
   KinNoKi Labs — Apple HIG Redesign
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@400;500;600;700&display=swap');

/* OpenDyslexic Fallback/WebFont */
@font-face {
  font-family: 'OpenDyslexic';
  src: url('https://cdn.jsdelivr.net/npm/opendyslexic@2.0.0/fonts/Regular/OpenDyslexic-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
}

/* ── Reset & Base ─────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #F5F5F7; /* Apple HIG Light Background */
  --color-surface: #ffffff;
  --color-text: #1d1d1f;
  --color-text-muted: #86868b;
  --color-border: rgba(0, 0, 0, 0.1);
  --color-nav-bg: rgba(245, 245, 247, 0.72);
  --font-primary: "Lexend", -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 800px;
  --radius-bento: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #000000; /* Apple HIG Dark Background */
    --color-surface: #1c1c1e;
    --color-text: #f5f5f7;
    --color-text-muted: #86868b;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-nav-bg: rgba(0, 0, 0, 0.72);
  }
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6; /* HIG Spacing */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.font-opendyslexic {
  --font-primary: "OpenDyslexic", -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Sticky Navigation ────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-brand img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--color-text);
}

.font-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  font-family: inherit;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.2s;
}

.font-toggle:hover {
  background: var(--color-border);
}

/* ── Bento Box Layout ─────────────────────────── */

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.bento-box {
  background: var(--color-surface);
  border-radius: var(--radius-bento);
  padding: 2rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

/* ── Metallic CTA Button ──────────────────────── */

.btn-metallic {
  display: inline-block;
  background: linear-gradient(135deg, #e6e6e6 0%, #ffffff 50%, #d4d4d4 100%);
  color: #1d1d1f;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1), inset 0 1px 1px rgba(255,255,255,0.8);
  border: 1px solid rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-top: 1rem;
}

@media (prefers-color-scheme: dark) {
  .btn-metallic {
    background: linear-gradient(135deg, #a68b5c 0%, #f1d596 50%, #997843 100%); /* Gold shine in dark mode */
    color: #000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5), inset 0 1px 1px rgba(255,255,255,0.3);
    border: 1px solid rgba(255,255,255,0.1);
  }
}

.btn-metallic:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
  text-decoration: none;
}

/* ── Typography ────────────────────────────────── */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 { font-size: 2.4rem; margin-bottom: 1rem; }
h2 { font-size: 1.6rem; margin-bottom: 0.75rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--color-border);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration-color: var(--color-text);
}

/* ── Post List ─────────────────────────────────── */

.post-list {
  list-style: none;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.post-item {
  display: block;
  text-decoration: none;
}

.post-item h2 {
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.post-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 0.5rem;
}

.post-description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ── Footer ────────────────────────────────────── */

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ── Responsive ────────────────────────────────── */
@media (max-width: 600px) {
  html { font-size: 16px; }
  .bento-box { padding: 1.5rem; }
}