/* ============================================================
   Datone Protocol — style.css
   Design: Thor Eriksen / Build: Tony Reeves / 2026-06-01
   ============================================================ */

/* --- FONTS --- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;450;500;600&family=Noto+Serif+TC:wght@400;500;600;700&display=swap');

/* --- RESET & VARS --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-deep:        #0d0d1a;
  --bg-indigo:      #1a1a2e;
  --bg-indigo-lift: #22223a;
  --bg-card:        #1e1e36;
  --accent-gold:     #c8a96e;
  --accent-gold-dim: #8a7448;
  --accent-gold-glow: rgba(200, 169, 110, 0.15);
  --text-cream:      #f5f0e8;
  --text-cream-dim:  #b8b4a8;
  --text-muted:      #7a7680;
  --sage:            #8fa88a;
  --sage-dim:        #637a5f;
  --border-subtle:   rgba(200, 169, 110, 0.12);
  --border-card:     rgba(255, 255, 255, 0.05);

  --font-heading: 'Cormorant Garamond', 'Noto Serif TC', Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-cjk:     'Noto Serif TC', 'Cormorant Garamond', serif;

  --max-width: 1100px;
  --nav-height: 64px;
}

html {
  scroll-behavior: smooth;
  font-size: 17px;
  background: var(--bg-deep);
  color: var(--text-cream);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(200,169,110,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 20% 40%, rgba(143,168,138,0.04) 0%, transparent 60%),
    var(--bg-deep);
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 500; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; font-family: var(--font-body); font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent-gold); }

p, li { font-size: 0.95rem; color: var(--text-cream-dim); }
a { color: var(--accent-gold); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--text-cream); }

.highlight { color: var(--accent-gold); }
.sage-text { color: var(--sage); }

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-gold-dim);
  display: block;
  margin-bottom: 0.5rem;
}

/* --- NAV --- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-height);
  background: rgba(13, 13, 26, 0.85);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center;
}

.nav-inner {
  width: 100%; max-width: var(--max-width); margin: 0 auto;
  padding: 0 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-heading); font-size: 1.2rem; font-weight: 600;
  color: var(--accent-gold); letter-spacing: 0.03em;
}
.nav-logo-icon { width: 28px; height: 28px; }

.nav-links {
  display: flex; gap: 1.8rem; align-items: center;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem; font-weight: 450; color: var(--text-cream-dim);
  letter-spacing: 0.03em; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1px; background: var(--accent-gold); transform: scaleX(0);
  transition: transform 0.25s; transform-origin: right;
}
.nav-links a:hover { color: var(--text-cream); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

.nav-cta a {
  display: inline-block; padding: 0.45rem 1.2rem;
  border: 1px solid var(--accent-gold); border-radius: 4px;
  color: var(--accent-gold); font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.04em;
  transition: all 0.25s;
}
.nav-cta a:hover { background: var(--accent-gold); color: var(--bg-deep); }

.mobile-toggle {
  display: none; background: none; border: none; color: var(--accent-gold);
  font-size: 1.5rem; cursor: pointer; padding: 0.25rem;
}

/* --- SECTIONS --- */
section { padding: 5rem 1.5rem; position: relative; }

.section-inner {
  max-width: var(--max-width); margin: 0 auto;
}

/* --- HERO --- */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding-top: var(--nav-height);
  background:
    radial-gradient(circle at 70% 20%, var(--accent-gold-glow) 0%, transparent 45%),
    radial-gradient(circle at 30% 80%, rgba(143,168,138,0.06) 0%, transparent 40%);
  text-align: center;
}

#hero .section-inner {
  display: flex; flex-direction: column; align-items: center; gap: 1.8rem;
  max-width: 780px;
}

.logo-mark {
  width: 80px; height: 80px;
  margin-bottom: 0.5rem;
}

.hero-quote {
  font-family: var(--font-cjk); font-size: 1.8rem; font-weight: 500;
  color: var(--accent-gold); letter-spacing: 0.08em;
  margin: 1rem 0 0.3rem;
}
.hero-quote-trans {
  font-family: var(--font-heading); font-style: italic;
  font-size: 1rem; color: var(--text-muted); max-width: 500px;
}

.hero-cta-row {
  display: flex; gap: 1rem; margin-top: 1rem;
  flex-wrap: wrap; justify-content: center;
}
.btn-primary, .btn-secondary {
  display: inline-block; padding: 0.7rem 1.8rem;
  border-radius: 4px; font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.03em; transition: all 0.25s; cursor: pointer;
}
.btn-primary {
  background: var(--accent-gold); color: var(--bg-deep); border: none;
}
.btn-primary:hover { background: #d4b67a; color: var(--bg-deep); }
.btn-secondary {
  background: transparent; color: var(--accent-gold);
  border: 1px solid var(--accent-gold-dim);
}
.btn-secondary:hover { border-color: var(--accent-gold); background: var(--accent-gold-glow); }

/* --- WHAT IS DATONE --- */
#about { background: var(--bg-indigo); }

.about-intro {
  max-width: 700px; margin-bottom: 3.5rem;
}
.about-intro p { font-size: 1.05rem; line-height: 1.75; }

.tenets-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem; margin-bottom: 4rem;
}

.tenet-card {
  background: var(--bg-card); border: 1px solid var(--border-card);
  border-radius: 6px; padding: 1.8rem 1.5rem;
  position: relative; overflow: hidden;
  transition: border-color 0.3s, transform 0.2s;
}
.tenet-card:hover {
  border-color: var(--border-subtle);
  transform: translateY(-2px);
}
.tenet-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: linear-gradient(90deg, var(--accent-gold), var(--sage-dim));
  opacity: 0.6;
}
.tenet-card h3 { color: var(--accent-gold); margin-bottom: 0.6rem; font-size: 1.2rem; }
.tenet-card p { font-size: 0.88rem; }

.layers-diagram {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem; margin: 2rem 0 3rem;
}
.layer-card {
  border: 1px solid var(--border-card); border-radius: 6px;
  padding: 1.5rem; text-align: center;
  background: rgba(255,255,255,0.02);
}
.layer-card:nth-child(1) { border-top: 3px solid var(--accent-gold); }
.layer-card:nth-child(2) { border-top: 3px solid var(--sage-dim); }
.layer-card:nth-child(3) { border-top: 3px solid var(--accent-gold-dim); }
.layer-card .layer-icon { font-size: 1.8rem; margin-bottom: 0.6rem; }
.layer-card h4 { margin-bottom: 0.4rem; }
.layer-card p { font-size: 0.85rem; }

.about-closing { max-width: 700px; }
.about-closing p { font-size: 1rem; }

/* --- FOR COMPANIES --- */
#companies { background: var(--bg-deep); }

.companies-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem;
  align-items: start; margin-top: 2.5rem;
}

.steps-list {
  list-style: none; display: flex; flex-direction: column; gap: 1.2rem;
}
.step-item {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1rem 1.2rem; background: var(--bg-card);
  border-radius: 6px; border-left: 3px solid var(--accent-gold-dim);
}
.step-num {
  font-family: var(--font-heading); font-size: 1.6rem; font-weight: 600;
  color: var(--accent-gold); line-height: 1; min-width: 2rem;
}
.step-item h4 { color: var(--text-cream); text-transform: none; letter-spacing: 0; font-family: var(--font-heading); font-size: 1.1rem; font-weight: 500; }
.step-item p { font-size: 0.85rem; }

.benefits-list { display: flex; flex-direction: column; gap: 1.2rem; }

.benefit-item {
  padding: 1.2rem 1.4rem; border: 1px solid var(--border-card);
  border-radius: 6px; background: rgba(255,255,255,0.015);
}
.benefit-item h4 { color: var(--sage); margin-bottom: 0.3rem; }
.benefit-item p { font-size: 0.85rem; }

.live-callout {
  margin-top: 3rem; padding: 1.5rem 2rem;
  border: 1px solid var(--accent-gold-dim); border-radius: 6px;
  background: var(--accent-gold-glow); text-align: center;
}
.live-callout p { font-size: 0.92rem; }
.live-callout strong { color: var(--accent-gold); }

/* --- FOR AGENTS --- */
#agents { background: var(--bg-indigo); }

.agents-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem;
  margin-top: 2.5rem;
}

code, pre {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.82rem; line-height: 1.55;
}

.code-block {
  background: #0d0d1f; border: 1px solid var(--border-card);
  border-radius: 6px; padding: 1.8rem; overflow-x: auto;
  color: var(--text-cream);
}

.code-block .key { color: var(--sage); }
.code-block .string { color: #c8ae6e; }
.code-block .number { color: #d4b67a; }
.code-block .bracket { color: var(--text-muted); }
.code-block .comment { color: #556; font-style: italic; }

.tools-col h4 { margin-bottom: 1rem; }
.tools-tags {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.tool-tag {
  display: inline-block; padding: 0.35rem 0.75rem;
  border: 1px solid var(--border-subtle); border-radius: 4px;
  font-size: 0.78rem; font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--text-cream-dim); background: rgba(255,255,255,0.02);
}

/* --- PROTOCOL SPEC --- */
#spec { background: var(--bg-deep); }

.spec-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem; margin-top: 2.5rem;
}

.spec-card {
  background: var(--bg-card); border: 1px solid var(--border-card);
  border-radius: 6px; padding: 1.8rem;
}
.spec-card h3 { color: var(--accent-gold); margin-bottom: 0.8rem; }
.spec-card p, .spec-card li { font-size: 0.88rem; }
.spec-card ul { padding-left: 1.2rem; }
.spec-card li { margin-bottom: 0.3rem; }

.tool-ref-list {
  display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.8rem;
}

/* --- AGENT REGISTRY --- */
#registry { background: var(--bg-indigo); }

.registry-intro { max-width: 600px; margin-bottom: 2rem; }

.table-wrap {
  overflow-x: auto; border: 1px solid var(--border-card);
  border-radius: 6px;
}

table {
  width: 100%; border-collapse: collapse;
  font-size: 0.88rem;
}

thead { border-bottom: 2px solid var(--border-subtle); }
th {
  text-align: left; padding: 0.9rem 1.2rem;
  font-family: var(--font-body); font-size: 0.75rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent-gold-dim); background: rgba(13,13,26,0.5);
}
td {
  padding: 0.8rem 1.2rem;
  border-bottom: 1px solid var(--border-card);
}
tr:hover td { background: rgba(200,169,110,0.04); }
.agent-name { font-weight: 500; color: var(--text-cream); }
.entity-tag {
  display: inline-block; padding: 0.15rem 0.6rem;
  border-radius: 3px; font-size: 0.72rem; font-weight: 500;
  background: rgba(143,168,138,0.15); color: var(--sage);
}

/* --- JOIN --- */
#join {
  background:
    radial-gradient(ellipse 80% 100% at 50% 100%, var(--accent-gold-glow) 0%, transparent 60%),
    var(--bg-deep);
  text-align: center;
}
#join .section-inner {
  display: flex; flex-direction: column; align-items: center; gap: 1.8rem;
}

.join-code {
  max-width: 650px; width: 100%;
  margin: 0.5rem 0;
}

.join-cta-row { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }

/* --- FOOTER --- */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 1.5rem 2rem;
  background: #0a0a16;
}

.footer-inner {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1.5rem;
}

.footer-left { display: flex; flex-direction: column; gap: 0.4rem; }
.footer-tagline {
  font-family: var(--font-heading); font-style: italic;
  font-size: 1rem; color: var(--accent-gold-dim);
}
.footer-copy { font-size: 0.78rem; color: var(--text-muted); }

.footer-links {
  display: flex; gap: 1.8rem; flex-wrap: wrap;
}
.footer-links a { font-size: 0.82rem; color: var(--text-muted); }
.footer-links a:hover { color: var(--text-cream); }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: var(--nav-height); left: 0; right: 0;
    background: rgba(13,13,26,0.97); backdrop-filter: blur(16px);
    padding: 1.5rem; gap: 1.2rem;
    border-bottom: 1px solid var(--border-subtle);
  }
  .mobile-toggle { display: block; }

  .companies-layout, .agents-layout {
    grid-template-columns: 1fr; gap: 2rem;
  }

  .hero-quote { font-size: 1.3rem; }

  section { padding: 3.5rem 1.2rem; }

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

@media (max-width: 480px) {
  .tenets-grid { grid-template-columns: 1fr; }
  .layers-diagram { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: 1fr; }
  .hero-cta-row { flex-direction: column; align-items: center; }
  .join-cta-row { flex-direction: column; align-items: center; }
}

/* --- ANIMATIONS --- */
@keyframes pulse-ring {
  0%, 100% { r: 26; opacity: 0.25; }
  50% { r: 34; opacity: 0.08; }
}

.animate-pulse-ring {
  animation: pulse-ring 4s ease-in-out infinite;
}