/* Sereno — colonial midnight watchman aesthetic
   Night indigo + lantern amber. Editorial serif + mono for chain data. */

:root {
  --night: #070b14;
  --night-2: #0c1220;
  --ink: #e8e2d4;
  --ink-dim: #9a927f;
  --lantern: #e8a54b;
  --lantern-hot: #ffc56e;
  --copper: #b87333;
  --fog: rgba(232, 226, 212, 0.06);
  --line: rgba(232, 226, 212, 0.12);
  --danger: #c45c4a;
  --audit: #6b9e8a;
  --serif: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Outfit", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1080px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1.05rem;
  line-height: 1.65;
  background: var(--night);
  overflow-x: hidden;
}

/* Atmosphere */
.sky {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 50% at 70% -10%, rgba(232, 165, 75, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 40% at 10% 20%, rgba(80, 100, 160, 0.15), transparent 50%),
    radial-gradient(ellipse 100% 80% at 50% 100%, #050810, var(--night));
}

.lantern-glow {
  position: fixed;
  top: -8rem;
  right: 8%;
  width: 28rem;
  height: 28rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 165, 75, 0.18), transparent 65%);
  filter: blur(8px);
  pointer-events: none;
  z-index: -1;
  animation: breathe 8s var(--ease) infinite alternate;
}

@keyframes breathe {
  from { opacity: 0.55; transform: scale(1); }
  to { opacity: 1; transform: scale(1.08); }
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 20, 0.72);
  border-bottom: 1px solid var(--line);
}

.mark {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--ink);
}

.mark-bell {
  font-size: 1.1rem;
  filter: grayscale(0.3);
}

.mark-text {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.88rem;
  font-weight: 400;
}

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

nav a:hover {
  color: var(--lantern-hot);
}

.nav-cta {
  color: var(--night) !important;
  background: var(--lantern);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-weight: 500;
}

.nav-cta:hover {
  background: var(--lantern-hot);
  color: var(--night) !important;
}

/* Layout */
.band {
  padding: 5.5rem 1.5rem;
}

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

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lantern);
  margin: 0 0 1.25rem;
}

h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  line-height: 1.05;
  margin: 0 0 1.5rem;
  letter-spacing: -0.02em;
}

h1 .line {
  display: block;
}

h1 .soft {
  color: var(--ink-dim);
  font-weight: 400;
  font-style: italic;
}

h1 .line:first-child {
  color: var(--lantern-hot);
}

.lede {
  max-width: 38rem;
  font-size: 1.15rem;
  color: var(--ink-dim);
  margin: 0 0 2rem;
}

.lede em {
  color: var(--ink);
  font-style: italic;
  font-family: var(--serif);
  font-size: 1.2em;
}

.lede strong {
  color: var(--ink);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s, border-color 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: var(--lantern);
  color: var(--night);
}

.btn.primary:hover {
  background: var(--lantern-hot);
}

.btn.ghost {
  border-color: var(--line);
  color: var(--ink);
  background: var(--fog);
}

.btn.ghost:hover {
  border-color: var(--lantern);
  color: var(--lantern-hot);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.hero-meta dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 0.25rem;
}

.hero-meta dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
}

/* Problem band */
.problem {
  background: linear-gradient(180deg, transparent, rgba(196, 92, 74, 0.06), transparent);
}

.problem h2,
.how h2,
.proof h2,
.pitch h2,
.cta h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 1.75rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.card {
  padding: 1.5rem;
  border-radius: 4px 16px 16px 4px;
  border: 1px solid var(--line);
  background: rgba(12, 18, 32, 0.8);
}

.card.bad {
  border-left: 3px solid var(--danger);
}

.card h3 {
  font-family: var(--serif);
  font-size: 1.45rem;
  margin: 0 0 0.5rem;
  color: var(--danger);
}

.card p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.98rem;
}

.band-close {
  margin: 1.75rem 0 0;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-style: italic;
  color: var(--ink);
}

/* Stages */
.stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: st;
}

.stages li {
  counter-increment: st;
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.35rem 1.25rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  position: relative;
}

.stages li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  right: 0;
  top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-dim);
  opacity: 0.5;
}

.stage-tag {
  grid-row: span 2;
  align-self: start;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--night);
  background: var(--lantern);
  padding: 0.35rem 0.55rem;
  border-radius: 3px;
  width: fit-content;
}

.stage-tag.private {
  background: transparent;
  color: var(--lantern);
  border: 1px solid var(--lantern);
}

.stage-tag.audit {
  background: var(--audit);
  color: var(--night);
}

.stages strong {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 600;
}

.stages p {
  margin: 0;
  grid-column: 2;
  color: var(--ink-dim);
  max-width: 36rem;
}

/* Proof */
.section-lede {
  color: var(--ink-dim);
  max-width: 36rem;
  margin: -0.75rem 0 2rem;
}

.proof-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
}

.proof-card {
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(12, 18, 32, 0.75);
}

.proof-card.featured {
  grid-row: span 2;
  border-color: rgba(232, 165, 75, 0.35);
  background:
    linear-gradient(145deg, rgba(232, 165, 75, 0.08), transparent 50%),
    rgba(12, 18, 32, 0.9);
  box-shadow: 0 0 0 1px rgba(232, 165, 75, 0.08), 0 20px 50px rgba(0, 0, 0, 0.35);
}

.proof-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lantern);
}

.proof-card h3 {
  font-family: var(--serif);
  font-size: 1.6rem;
  margin: 0.5rem 0 1rem;
}

.mono {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink);
  word-break: break-all;
}

.wrap {
  margin: 0 0 1rem;
}

.proof-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.proof-links a {
  color: var(--lantern-hot);
  font-size: 0.88rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.proof-links a:hover {
  border-bottom-color: var(--lantern);
}

button.copy {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

button.copy:hover {
  color: var(--lantern);
  border-color: var(--lantern);
}

ul.plain {
  margin: 0.75rem 0 0;
  padding: 0 0 0 1.1rem;
  color: var(--ink-dim);
  font-size: 0.95rem;
}

ul.plain strong {
  color: var(--ink);
  font-weight: 500;
}

.note {
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--copper);
  background: var(--fog);
  font-size: 0.92rem;
  color: var(--ink-dim);
}

.note strong {
  color: var(--ink);
}

.note code {
  font-family: var(--mono);
  font-size: 0.82em;
  color: var(--lantern);
}

/* Pitch */
.pitch blockquote {
  margin: 0 0 2.5rem;
  padding: 0;
  border: none;
}

.pitch blockquote p {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-style: italic;
  line-height: 1.45;
  color: var(--ink);
  max-width: 40rem;
  margin: 0;
}

.pitch blockquote strong {
  font-style: normal;
  color: var(--lantern-hot);
  font-weight: 600;
}

.pitch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pitch-grid h3 {
  font-family: var(--serif);
  font-size: 1.25rem;
  margin: 0 0 0.4rem;
  color: var(--lantern);
}

.pitch-grid p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-dim);
}

/* CTA */
.cta-box {
  text-align: center;
  padding: 3rem 1.5rem;
  border: 1px solid rgba(232, 165, 75, 0.25);
  border-radius: 20px;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(232, 165, 75, 0.12), transparent 60%),
    rgba(12, 18, 32, 0.9);
}

.cta-box .mono {
  margin: 0 auto 1.5rem;
  max-width: 28rem;
  color: var(--ink-dim);
}

.cta-box .hero-actions {
  justify-content: center;
  margin-bottom: 0;
}

/* Footer */
footer {
  padding: 2.5rem 1.5rem 3rem;
  text-align: center;
  border-top: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 0.88rem;
}

.foot-soft {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--lantern);
  opacity: 0.85;
  margin: 0.5rem 0 0;
}

/* Motion */
.fade-up {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s var(--ease) forwards;
}

.delay-1 { animation-delay: 0.12s; }
.delay-2 { animation-delay: 0.24s; }
.delay-3 { animation-delay: 0.36s; }
.delay-4 { animation-delay: 0.5s; }

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

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--lantern);
  color: var(--night);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  z-index: 200;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.toast[hidden] {
  display: none;
}

/* Responsive */
@media (max-width: 800px) {
  nav a:not(.nav-cta) {
    display: none;
  }

  .split,
  .proof-grid,
  .pitch-grid,
  .hero-meta {
    grid-template-columns: 1fr;
  }

  .proof-card.featured {
    grid-row: auto;
  }

  .stages li {
    grid-template-columns: 1fr;
  }

  .stage-tag {
    grid-row: auto;
  }

  .stages p {
    grid-column: 1;
  }

  .stages li::before {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }
}