/*
 * Slowbase — application stylesheet
 */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── Design Tokens ─── */
:root {
  --background: hsl(38, 25%, 95%);
  --foreground: hsl(220, 20%, 14%);
  --foreground-muted: hsl(220, 10%, 42%);
  --foreground-subtle: hsl(220, 8%, 58%);

  --accent: hsl(218, 80%, 48%);
  --accent-hover: hsl(218, 80%, 42%);

  --border: hsl(38, 12%, 85%);
  --border-hover: hsl(38, 10%, 72%);

  --surface: hsl(38, 18%, 97%);

  --font-serif: 'Lora', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Fira Mono', monospace;
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }

body {
  font-family: var(--font-mono);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

/* ─── Noise Overlay ─── */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("/assets/noise-b0b454e7.png");
  background-size: 180px 180px;
  background-repeat: repeat;
}

/* ─── Layout ─── */
.page-wrapper { position: relative; min-height: 100vh; }

.container { margin-inline: auto; max-width: 1080px; padding-inline: 1.5rem; }
.container-md { margin-inline: auto; max-width: 768px; padding-inline: 1.5rem; }
.container-sm { margin-inline: auto; max-width: 672px; padding-inline: 1.5rem; }
.container-xs { margin-inline: auto; max-width: 512px; padding-inline: 1.5rem; }

.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-16 { margin-bottom: 4rem; }
.py-24 { padding-block: 6rem; }
.italic { font-style: italic; }
.uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: 0.05em; }

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-serif); font-weight: 400; }

.wordmark {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--foreground);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--foreground);
  margin-bottom: 1.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--foreground);
}

.serif-lg {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.5vw, 1.875rem);
  color: var(--foreground);
  line-height: 1.4;
}

.serif-md {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--foreground-muted);
}

.mono-body {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--foreground-muted);
  line-height: 1.7;
}

.mono-body-sm {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--foreground-muted);
  line-height: 1.7;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--foreground-muted);
}

.mono-tiny {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.4;
}

.muted { color: var(--foreground-muted); }
.subtle { color: var(--foreground-subtle); }

.hero-sub {
  font-family: var(--font-mono);
  font-size: clamp(0.8125rem, 1.5vw, 1rem);
  color: var(--foreground-muted);
  max-width: 36rem;
  margin-inline: auto;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  background-color: var(--background);
}

.header-inner {
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-nav { display: flex; align-items: center; gap: 1.25rem; }

/* ─── Buttons ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 1rem;
  background-color: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.25rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s;
  text-decoration: none;
}

.btn-primary:hover { background-color: var(--accent-hover); }

.btn-lg { padding: 0.625rem 1.5rem; font-size: 1rem; }

.shadow-glow { box-shadow: 0 0 16px hsla(218, 80%, 48%, 0.25); }
.shadow-glow:hover { box-shadow: 0 0 28px hsla(218, 80%, 48%, 0.4); }

/* ─── Section ─── */
.section { position: relative; }
.section-border { border-top: 1px solid var(--border); }

/* ─── Hero ─── */
.hero-section {
  overflow: hidden;
  padding-block: max(14vh, 5rem) 6rem;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 48rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Blueprint grid */
.blueprint-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
  fill: hsla(218, 80%, 48%, 0.5);
  stroke: hsla(218, 80%, 48%, 0.5);
  -webkit-mask-image: linear-gradient(to top, rgba(255,255,255,0.68), transparent);
  mask-image: linear-gradient(to top, rgba(255,255,255,0.68), transparent);
  opacity: 0.3;
}

/* ─── Hill chart ─── */
.hill-chart-wrap {
  position: relative;
  max-width: 42rem;
  margin-inline: auto;
  margin-bottom: 3rem;
}

.hill-svg { width: 100%; display: block; }

.hill-label {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.125rem;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.hill-label-left { left: 25%; top: 58.75%; }
.hill-label-right { left: 75%; top: 63.3%; }

.hill-phase {
  position: absolute;
  pointer-events: none;
  transform: translate(-50%, -50%);
  white-space: nowrap;
}

.hill-phase-left { left: 25%; top: 93.3%; }
.hill-phase-right { left: 75%; top: 93.3%; }

/* ─── Loop grid ─── */
.loop-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--border);
}

@media (max-width: 768px) {
  .loop-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .loop-grid { grid-template-columns: 1fr; }
}

.loop-card {
  background-color: var(--background);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.loop-card-meta { display: flex; align-items: center; gap: 0.5rem; }

.loop-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--foreground);
}

/* ─── Badges ─── */
.badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  border: 1px solid;
}

.badge-neutral {
  background-color: var(--surface);
  color: var(--foreground-subtle);
  border-color: var(--border);
}

.badge-accent {
  background-color: hsla(218, 80%, 48%, 0.08);
  color: var(--accent);
  border-color: hsla(218, 80%, 48%, 0.2);
}

/* ─── Missing tags ─── */
.missing-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.tag {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--foreground-muted);
}

/* ─── Steps ─── */
.steps { display: flex; flex-direction: column; }

.step {
  display: flex;
  gap: 1rem;
  padding-bottom: 3rem;
}

.step-last { padding-bottom: 0; }

.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.step-dot {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background-color: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-line {
  width: 1px;
  flex: 1;
  background-color: hsla(38, 12%, 85%, 0.5);
  margin-top: 0.25rem;
}

.step-body { padding-top: 0.125rem; }

.step-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

/* ─── Pillars ─── */
.pillars { display: flex; flex-direction: column; gap: 1.5rem; }

.pillar-card {
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  padding: 1.5rem;
  transition: border-color 0.15s;
}

.pillar-card:hover { border-color: var(--border-hover); }

.pillar-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.pillar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 560px) {
  .pillar-grid { grid-template-columns: 1fr; }
}

/* ─── Structure grid ─── */
.structure-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background-color: var(--border);
}

@media (max-width: 560px) {
  .structure-grid { grid-template-columns: 1fr; }
}

.structure-cell {
  background-color: var(--background);
  padding: 1.5rem;
}

/* ─── Waitlist Form ─── */
.waitlist-form { width: 100%; }

.waitlist-row {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.waitlist-input {
  flex: 1;
  min-width: 0;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  background-color: var(--surface);
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.15s;
}

.waitlist-input:focus { border-color: var(--accent); }
.waitlist-input::placeholder { color: var(--foreground-subtle); }

@media (max-width: 480px) {
  .waitlist-row { flex-direction: column; }
}

/* ─── Footer ─── */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
}

.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; }

.footer-link {
  color: var(--foreground-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s;
}

.footer-link:hover { color: var(--foreground); }

/* ─── Utility ─── */
.hide-sm { display: inline; }

@media (max-width: 560px) {
  .hide-sm { display: none; }
}