/* ============================================
   KALAM — Design System
   Editorial-scholarly aesthetic with handwritten accents
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;0,9..144,800;1,9..144,400;1,9..144,600&family=Kalam:wght@300;400;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color system — pen, paper, ink */
  --ink: #1a2847;
  --ink-deep: #0f1a33;
  --ink-soft: #2d3d66;
  --paper: #faf7f0;
  --paper-warm: #f5efe0;
  --paper-edge: #ebe3cf;
  --rule: #e4d9bd;
  --amber: #d4893d;
  --amber-soft: #e9b76d;
  --red-pen: #c44536;
  --graphite: #2b2b2b;
  --graphite-soft: #4a4a4a;
  --mute: #8a8170;

  /* Type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 4rem;
  --text-6xl: 5.5rem;

  /* Spacing */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;
  --sp-10: 8rem;

  /* Layout */
  --container: 1240px;
  --container-narrow: 920px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 16px;

  /* Elevation */
  --shadow-sm: 0 2px 8px rgba(26, 40, 71, 0.06);
  --shadow: 0 8px 24px rgba(26, 40, 71, 0.08);
  --shadow-lg: 0 20px 60px rgba(26, 40, 71, 0.12);
  --shadow-paper: 0 1px 2px rgba(26, 40, 71, 0.04), 0 8px 30px rgba(26, 40, 71, 0.08), 0 16px 50px rgba(26, 40, 71, 0.05);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: 'Fraunces', Georgia, serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--graphite);
  background: var(--paper);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(26, 40, 71, 0.04) 1px, transparent 0);
  background-size: 24px 24px;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -0.015em;
  font-variation-settings: 'opsz' 144;
}

h1 { font-size: clamp(2.5rem, 5.5vw, var(--text-6xl)); font-weight: 400; }
h2 { font-size: clamp(2rem, 4vw, var(--text-4xl)); font-weight: 400; }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

.hand {
  font-family: 'Kalam', cursive;
  font-weight: 400;
}

.mono {
  font-family: 'JetBrains Mono', monospace;
}

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.lede {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--graphite-soft);
  font-weight: 400;
}

.italic-note {
  font-style: italic;
  color: var(--mute);
}

/* ============================================
   Layout Utilities
   ============================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

section {
  padding: var(--sp-10) 0;
}

.section-header {
  margin-bottom: var(--sp-8);
  max-width: 680px;
}

.section-header .eyebrow {
  margin-bottom: var(--sp-3);
  display: block;
}

/* ============================================
   Announcement Bar
   ============================================ */
.announce {
  background: var(--ink-deep);
  color: var(--paper);
  padding: var(--sp-3) var(--sp-5);
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.announce strong {
  color: var(--amber-soft);
  font-weight: 600;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--paper-edge);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

.logo {
  font-family: 'Kalam', cursive;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  text-decoration: none;
  line-height: 1;
  position: relative;
}

.logo::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0.7) skew(-8deg);
  transform-origin: left;
  border-radius: 2px;
}

.logo-tag {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--mute);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  list-style: none;
}

.nav-links a {
  font-family: 'Fraunces', serif;
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--graphite);
  position: relative;
  padding: var(--sp-1) 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1.5px;
  background: var(--amber);
}

.nav-cart {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--ink);
  transition: all 0.2s ease;
}

.nav-cart:hover {
  background: var(--ink);
  color: var(--paper);
}

.cart-count {
  background: var(--amber);
  color: var(--paper);
  border-radius: 999px;
  padding: 0 6px;
  font-size: 0.625rem;
  min-width: 18px;
  text-align: center;
}

.nav-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--ink);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  font-family: 'Fraunces', serif;
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: 999px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.btn-primary:hover {
  background: var(--ink-deep);
  color: var(--paper);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.btn-secondary:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn-amber {
  background: var(--amber);
  color: var(--paper);
  border-color: var(--amber);
}

.btn-amber:hover {
  background: #b97530;
  color: var(--paper);
}

.btn-arrow {
  transition: transform 0.25s ease;
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  padding: var(--sp-9) 0 var(--sp-10);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-5);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  align-items: center;
}

.hero-copy {
  position: relative;
}

.hero-copy .eyebrow {
  display: inline-block;
  margin-bottom: var(--sp-4);
}

.hero h1 {
  margin-bottom: var(--sp-5);
  font-weight: 300;
  font-variation-settings: 'opsz' 144;
}

.hero h1 em {
  font-style: italic;
  color: var(--amber);
  font-weight: 400;
}

.hero h1 .hand-accent {
  font-family: 'Kalam', cursive;
  font-weight: 700;
  color: var(--ink);
  font-style: normal;
  font-size: 0.9em;
  display: inline-block;
  transform: rotate(-2deg);
  position: relative;
}

.hero h1 .hand-accent::after {
  content: '';
  position: absolute;
  left: -4%;
  right: -4%;
  bottom: 6%;
  height: 40%;
  background: var(--amber);
  opacity: 0.22;
  z-index: -1;
  transform: skew(-6deg);
  border-radius: 3px;
}

.hero .lede {
  margin-bottom: var(--sp-7);
  max-width: 520px;
}

.hero-ctas {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  margin-bottom: var(--sp-7);
}

.hero-meta {
  display: flex;
  gap: var(--sp-6);
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-meta span::before {
  content: '◆';
  color: var(--amber);
  margin-right: var(--sp-2);
  font-size: 0.5rem;
  vertical-align: middle;
}

/* Hero notebook display */
.hero-visual {
  position: relative;
  padding: var(--sp-5);
}

.notebook-frame {
  position: relative;
  background: var(--paper-warm);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper);
  transform: rotate(2.5deg);
  transition: transform 0.4s ease;
  overflow: hidden;
  border: 1px solid var(--paper-edge);
}

.notebook-frame:hover {
  transform: rotate(0deg) scale(1.02);
}

.notebook-frame img {
  width: 100%;
  display: block;
  mix-blend-mode: multiply;
}

.notebook-tag {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--red-pen);
  color: var(--paper);
  padding: var(--sp-1) var(--sp-3);
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: 2px;
  transform: rotate(4deg);
  box-shadow: var(--shadow-sm);
  z-index: 2;
}

.notebook-corner {
  position: absolute;
  bottom: -20px;
  left: -10px;
  font-family: 'Kalam', cursive;
  font-size: 1rem;
  color: var(--red-pen);
  transform: rotate(-4deg);
  z-index: 2;
}

.notebook-arrow {
  position: absolute;
  bottom: 10%;
  right: -60px;
  width: 80px;
  color: var(--amber);
  opacity: 0.6;
  transform: rotate(30deg);
  z-index: 1;
}

/* ============================================
   Credentials Strip
   ============================================ */
.credentials {
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-6) 0;
  overflow: hidden;
}

.credentials-inner {
  display: flex;
  gap: var(--sp-8);
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(250, 247, 240, 0.8);
}

.credentials-inner > * {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.credentials-inner strong {
  color: var(--amber-soft);
  font-weight: 600;
}

.credentials-inner .sep {
  color: var(--amber);
  opacity: 0.5;
}

/* ============================================
   Subject Grid
   ============================================ */
.subjects {
  background: var(--paper-warm);
  position: relative;
}

.subjects::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--rule);
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.subject-card {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  padding: var(--sp-6);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  min-height: 240px;
}

.subject-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--amber);
  transition: height 0.3s ease;
}

.subject-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--amber);
}

.subject-card:hover::before {
  height: 100%;
}

.subject-icon {
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: 1.75rem;
  color: var(--amber);
  margin-bottom: var(--sp-4);
  display: inline-block;
  transform: rotate(-3deg);
  align-self: flex-start;
}

.subject-name {
  font-family: 'Fraunces', serif;
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--sp-2);
  letter-spacing: -0.01em;
}

.subject-desc {
  font-size: var(--text-sm);
  color: var(--graphite-soft);
  line-height: 1.5;
  margin-bottom: var(--sp-4);
  flex: 1;
}

.subject-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.subject-count::after {
  content: '→';
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}

.subject-card:hover .subject-count::after {
  transform: translateX(4px);
  color: var(--amber);
}

/* ============================================
   Pillars (Why these notes)
   ============================================ */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
  counter-reset: pillar;
}

.pillar {
  counter-increment: pillar;
  position: relative;
  padding-top: var(--sp-7);
}

.pillar::before {
  content: counter(pillar, decimal-leading-zero);
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: 3rem;
  color: var(--amber);
  line-height: 1;
  position: absolute;
  top: -10px;
  left: -4px;
  transform: rotate(-4deg);
}

.pillar-title {
  font-family: 'Fraunces', serif;
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.pillar-text {
  font-size: var(--text-base);
  color: var(--graphite-soft);
  line-height: 1.6;
}

/* ============================================
   Specimen (big image feature)
   ============================================ */
.specimen {
  background: var(--ink);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}

.specimen .container {
  position: relative;
  z-index: 2;
}

.specimen-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--sp-8);
  align-items: center;
}

.specimen h2 {
  color: var(--paper);
  margin-bottom: var(--sp-5);
}

.specimen h2 em {
  color: var(--amber-soft);
  font-style: italic;
}

.specimen-text {
  font-size: var(--text-lg);
  color: rgba(250, 247, 240, 0.8);
  line-height: 1.6;
  margin-bottom: var(--sp-6);
}

.specimen-features {
  list-style: none;
  padding: 0;
  margin-bottom: var(--sp-7);
}

.specimen-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid rgba(250, 247, 240, 0.1);
  font-size: var(--text-base);
  color: rgba(250, 247, 240, 0.9);
}

.specimen-features li:last-child {
  border-bottom: none;
}

.specimen-features .check {
  color: var(--amber);
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.specimen-image {
  background: var(--paper-warm);
  padding: var(--sp-4);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transform: rotate(-1deg);
  border: 1px solid var(--paper-edge);
}

.specimen-image img {
  width: 100%;
  border-radius: var(--radius-sm);
}

/* ============================================
   Bundles
   ============================================ */
.bundles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.bundle-card {
  background: var(--paper);
  border: 1.5px solid var(--paper-edge);
  border-radius: var(--radius);
  padding: var(--sp-7);
  position: relative;
  transition: all 0.3s ease;
}

.bundle-card:hover {
  border-color: var(--ink);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.bundle-card.featured {
  border-color: var(--amber);
  border-width: 2px;
  background: linear-gradient(to bottom, var(--paper), var(--paper-warm));
}

.bundle-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--amber);
  color: var(--paper);
  padding: var(--sp-1) var(--sp-3);
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: 2px;
  transform: rotate(-2deg);
  box-shadow: var(--shadow-sm);
}

.bundle-name {
  font-family: 'Fraunces', serif;
  font-size: var(--text-2xl);
  color: var(--ink);
  margin-bottom: var(--sp-2);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.bundle-includes {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.bundle-price {
  display: flex;
  align-items: baseline;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}

.bundle-price .price {
  font-family: 'Fraunces', serif;
  font-size: var(--text-3xl);
  font-weight: 400;
  color: var(--ink);
}

.bundle-price .was {
  font-family: 'Fraunces', serif;
  font-size: var(--text-lg);
  color: var(--mute);
  text-decoration: line-through;
}

.bundle-price .save {
  font-family: 'Kalam', cursive;
  font-weight: 700;
  color: var(--red-pen);
  font-size: var(--text-base);
  transform: rotate(-3deg);
  display: inline-block;
}

.bundle-list {
  list-style: none;
  margin-bottom: var(--sp-6);
}

.bundle-list li {
  padding: var(--sp-2) 0;
  border-bottom: 1px dashed var(--rule);
  font-size: var(--text-base);
  color: var(--graphite);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.bundle-list li::before {
  content: '✓';
  color: var(--amber);
  font-weight: bold;
  font-family: 'Fraunces', serif;
}

.bundle-list li:last-child {
  border-bottom: none;
}

/* ============================================
   Sample CTA (email capture)
   ============================================ */
.sample-cta {
  background: var(--paper-warm);
  position: relative;
  overflow: hidden;
}

.sample-cta-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--sp-5);
  position: relative;
  z-index: 2;
}

.sample-cta .eyebrow {
  margin-bottom: var(--sp-3);
  display: block;
}

.sample-cta h2 {
  margin-bottom: var(--sp-4);
}

.sample-cta h2 .hand {
  color: var(--amber);
  font-weight: 700;
}

.sample-cta p {
  font-size: var(--text-lg);
  color: var(--graphite-soft);
  margin-bottom: var(--sp-6);
}

.sample-form {
  display: flex;
  gap: var(--sp-3);
  max-width: 520px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.sample-form input {
  flex: 1;
  min-width: 240px;
  padding: var(--sp-3) var(--sp-5);
  font-family: 'Fraunces', serif;
  font-size: var(--text-base);
  color: var(--ink);
  background: var(--paper);
  border: 1.5px solid var(--paper-edge);
  border-radius: 999px;
  outline: none;
  transition: border-color 0.2s ease;
}

.sample-form input:focus {
  border-color: var(--ink);
}

.sample-form input::placeholder {
  color: var(--mute);
}

.sample-fine {
  margin-top: var(--sp-4);
  font-size: var(--text-xs);
  color: var(--mute);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
}

/* Decorative scribble */
.sample-scribble {
  position: absolute;
  font-family: 'Kalam', cursive;
  font-size: 1.5rem;
  color: var(--amber);
  opacity: 0.3;
}

.sample-scribble.top-left {
  top: 20%;
  left: 8%;
  transform: rotate(-15deg);
}

.sample-scribble.bottom-right {
  bottom: 20%;
  right: 8%;
  transform: rotate(10deg);
}

/* ============================================
   Testimonials
   ============================================ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.testimonial {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  padding: var(--sp-6);
  position: relative;
}

.testimonial-quote {
  font-family: 'Fraunces', serif;
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--graphite);
  line-height: 1.5;
  margin-bottom: var(--sp-5);
  position: relative;
}

.testimonial-quote::before {
  content: '"';
  font-family: 'Fraunces', serif;
  font-size: 4rem;
  color: var(--amber);
  opacity: 0.3;
  position: absolute;
  top: -20px;
  left: -15px;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: var(--text-lg);
}

.testimonial-name {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  color: var(--ink);
  font-size: var(--text-base);
}

.testimonial-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  letter-spacing: 0.05em;
}

/* ============================================
   Author Teaser
   ============================================ */
.author-teaser {
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-9) 0;
}

.author-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--sp-8);
  align-items: center;
}

.author-photo {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber), var(--red-pen));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: 5rem;
  color: var(--paper);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.author-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  border-radius: 50%;
}

.author-photo::before {
  content: '';
  position: absolute;
  inset: -8px;
  border: 2px dashed var(--amber);
  border-radius: 50%;
  opacity: 0.4;
}

.author-info h2 {
  color: var(--paper);
  margin-bottom: var(--sp-3);
}

.author-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-sm);
  color: var(--amber-soft);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.author-bio {
  font-size: var(--text-lg);
  color: rgba(250, 247, 240, 0.85);
  line-height: 1.6;
  margin-bottom: var(--sp-5);
}

.author-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-6);
  padding: var(--sp-5) 0;
  border-top: 1px solid rgba(250, 247, 240, 0.15);
  border-bottom: 1px solid rgba(250, 247, 240, 0.15);
}

.author-stat-num {
  font-family: 'Fraunces', serif;
  font-size: var(--text-3xl);
  font-weight: 400;
  color: var(--amber-soft);
  line-height: 1;
  margin-bottom: var(--sp-1);
}

.author-stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: rgba(250, 247, 240, 0.7);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================
   Footer
   ============================================ */
footer {
  background: var(--ink-deep);
  color: rgba(250, 247, 240, 0.7);
  padding: var(--sp-9) 0 var(--sp-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-7);
  margin-bottom: var(--sp-7);
}

.footer-brand .logo {
  color: var(--paper);
  margin-bottom: var(--sp-3);
  display: inline-block;
}

.footer-tag {
  font-size: var(--text-sm);
  color: rgba(250, 247, 240, 0.6);
  max-width: 320px;
  line-height: 1.5;
  margin-bottom: var(--sp-5);
}

.footer-col h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--amber-soft);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: var(--sp-2);
}

.footer-col ul a {
  color: rgba(250, 247, 240, 0.7);
  font-size: var(--text-sm);
  font-family: 'Fraunces', serif;
  transition: color 0.2s ease;
}

.footer-col ul a:hover {
  color: var(--amber-soft);
}

.footer-bottom {
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(250, 247, 240, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: rgba(250, 247, 240, 0.5);
  letter-spacing: 0.05em;
}

.footer-socials {
  display: flex;
  gap: var(--sp-4);
}

.footer-socials a {
  color: rgba(250, 247, 240, 0.6);
}

.footer-socials a:hover {
  color: var(--amber-soft);
}

/* ============================================
   SHOP PAGE
   ============================================ */
.page-header {
  padding: var(--sp-8) 0 var(--sp-7);
  background: var(--paper-warm);
  border-bottom: 1px solid var(--paper-edge);
  text-align: center;
}

.page-header .eyebrow {
  margin-bottom: var(--sp-3);
  display: block;
}

.page-header h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--sp-4);
}

.page-header p {
  font-size: var(--text-lg);
  color: var(--graphite-soft);
  max-width: 640px;
  margin: 0 auto;
}

.shop-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--sp-7);
  align-items: start;
}

.shop-filters {
  position: sticky;
  top: 100px;
}

.filter-group {
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--paper-edge);
}

.filter-group:last-child {
  border-bottom: none;
}

.filter-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

.filter-list {
  list-style: none;
}

.filter-list li {
  padding: var(--sp-1) 0;
}

.filter-list label {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  cursor: pointer;
  font-size: var(--text-base);
  color: var(--graphite);
  transition: color 0.2s ease;
}

.filter-list label:hover {
  color: var(--ink);
}

.filter-list input[type='checkbox'] {
  accent-color: var(--amber);
}

.filter-list .count {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
}

.shop-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--sp-5);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--paper-edge);
}

.shop-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-sm);
  color: var(--mute);
  letter-spacing: 0.05em;
}

.shop-sort select {
  padding: var(--sp-2) var(--sp-4);
  font-family: 'Fraunces', serif;
  font-size: var(--text-sm);
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  color: var(--ink);
  cursor: pointer;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.product-card {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--amber);
}

.product-cover {
  aspect-ratio: 4 / 3;
  background: var(--paper-warm);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-5);
}

/* Real book covers — display the first page of the PDF */
.product-cover-image {
  padding: var(--sp-4);
}

.product-cover-image img {
  max-width: 75%;
  max-height: 100%;
  width: auto;
  border-radius: 2px;
  box-shadow: var(--shadow-lg);
  transform: rotate(-2deg);
  transition: transform 0.3s ease;
}

.product-card:hover .product-cover-image img {
  transform: rotate(0deg) scale(1.03);
}

.product-available-tag {
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  background: var(--red-pen);
  color: var(--paper);
  padding: 3px 10px;
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: var(--text-xs);
  border-radius: 2px;
  transform: rotate(3deg);
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.02em;
  z-index: 2;
}

/* Highlight real products with a distinct border */
.product-card-real {
  border-color: var(--amber);
  border-width: 1.5px;
}

.product-cover-art {
  width: 100%;
  max-width: 200px;
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-5);
  border-radius: var(--radius-sm);
  transform: rotate(-2deg);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
  aspect-ratio: 3 / 4;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.product-card:hover .product-cover-art {
  transform: rotate(0deg) scale(1.03);
}

.product-cover-art .subject {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  color: var(--amber-soft);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.product-cover-art h3 {
  color: var(--paper);
  font-family: 'Fraunces', serif;
  font-size: 1.125rem;
  line-height: 1.2;
  font-weight: 400;
}

.product-cover-art .vol {
  font-family: 'Kalam', cursive;
  color: var(--amber-soft);
  font-weight: 700;
  font-size: 0.875rem;
}

.product-info {
  padding: var(--sp-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--amber);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.product-name {
  font-family: 'Fraunces', serif;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--sp-2);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.product-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  margin-bottom: var(--sp-4);
  flex: 1;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.product-price {
  font-family: 'Fraunces', serif;
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--ink);
}

.product-add {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--amber);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

/* ============================================
   PRODUCT DETAIL PAGE
   ============================================ */
.product-detail {
  padding: var(--sp-8) 0;
}

.product-breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.product-breadcrumb a {
  color: var(--mute);
}

.product-breadcrumb a:hover {
  color: var(--ink);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: 100px;
}

.product-main-image {
  background: var(--paper-warm);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  padding: var(--sp-6);
  margin-bottom: var(--sp-4);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-main-image img {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}

.product-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
}

.product-thumb {
  aspect-ratio: 1;
  background: var(--paper-warm);
  border: 1.5px solid var(--paper-edge);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s ease;
  overflow: hidden;
}

.product-thumb.active,
.product-thumb:hover {
  border-color: var(--amber);
}

.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-info h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--sp-3);
}

.product-detail-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--amber);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

.product-detail-lede {
  font-size: var(--text-lg);
  color: var(--graphite-soft);
  margin-bottom: var(--sp-5);
  line-height: 1.6;
}

.product-spec {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
  padding: var(--sp-5);
  background: var(--paper-warm);
  border-radius: var(--radius);
  margin-bottom: var(--sp-6);
}

.product-spec-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.product-spec-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.product-spec-value {
  font-family: 'Fraunces', serif;
  font-size: var(--text-base);
  color: var(--ink);
  font-weight: 500;
}

.product-purchase {
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-6);
  border-radius: var(--radius);
  margin-bottom: var(--sp-6);
}

.product-purchase-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--sp-5);
}

.product-purchase-price {
  font-family: 'Fraunces', serif;
  font-size: var(--text-4xl);
  font-weight: 400;
  color: var(--paper);
  line-height: 1;
}

.product-purchase-was {
  font-family: 'Fraunces', serif;
  font-size: var(--text-lg);
  color: rgba(250, 247, 240, 0.5);
  text-decoration: line-through;
  margin-left: var(--sp-3);
}

.product-purchase-note {
  font-family: 'Kalam', cursive;
  font-weight: 700;
  color: var(--amber-soft);
  font-size: var(--text-base);
  transform: rotate(-2deg);
  display: inline-block;
}

.product-btn-group {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}

.btn-buy {
  background: var(--amber);
  color: var(--paper);
  padding: var(--sp-4) var(--sp-6);
  font-family: 'Fraunces', serif;
  font-size: var(--text-lg);
  font-weight: 500;
  border-radius: 999px;
  text-align: center;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-buy:hover {
  background: #b97530;
  color: var(--paper);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(212, 137, 61, 0.3);
}

.btn-sample {
  background: transparent;
  border: 1.5px solid rgba(250, 247, 240, 0.3);
  color: var(--paper);
  padding: var(--sp-4) var(--sp-6);
  border-radius: 999px;
  font-family: 'Fraunces', serif;
  font-size: var(--text-base);
  transition: all 0.2s ease;
  text-decoration: none;
  text-align: center;
}

.btn-sample:hover {
  border-color: var(--paper);
  color: var(--paper);
}

.purchase-trust {
  display: flex;
  gap: var(--sp-4);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: rgba(250, 247, 240, 0.6);
  letter-spacing: 0.05em;
}

.purchase-trust span::before {
  content: '✓ ';
  color: var(--amber-soft);
}

.product-inside h3 {
  margin-bottom: var(--sp-4);
  font-size: var(--text-xl);
}

.inside-list {
  list-style: none;
  margin-bottom: var(--sp-7);
}

.inside-list li {
  padding: var(--sp-3) 0;
  border-bottom: 1px dashed var(--rule);
  display: flex;
  gap: var(--sp-3);
  color: var(--graphite);
  line-height: 1.5;
}

.inside-list li::before {
  content: '§';
  color: var(--amber);
  font-weight: 700;
  font-family: 'Fraunces', serif;
  flex-shrink: 0;
  font-size: var(--text-lg);
  line-height: 1.3;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-hero {
  padding: var(--sp-9) 0;
  background: var(--paper-warm);
  border-bottom: 1px solid var(--paper-edge);
}

.about-hero-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--sp-8);
  align-items: center;
}

.about-photo {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ink), var(--amber));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: 6rem;
  color: var(--paper);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  border-radius: 50%;
}

.about-photo::before {
  content: '';
  position: absolute;
  inset: -12px;
  border: 2px dashed var(--amber);
  border-radius: 50%;
  opacity: 0.5;
}

.about-hero h1 {
  margin-bottom: var(--sp-3);
}

.about-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-sm);
  color: var(--amber);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.about-contact {
  display: flex;
  gap: var(--sp-5);
  margin-top: var(--sp-5);
  flex-wrap: wrap;
}

.about-contact a {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--ink);
  letter-spacing: 0.05em;
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid var(--paper-edge);
  border-radius: 999px;
  background: var(--paper);
  transition: all 0.2s ease;
}

.about-contact a:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.about-body {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-5);
}

.about-body h2 {
  margin-top: var(--sp-7);
  margin-bottom: var(--sp-4);
  font-size: var(--text-3xl);
}

.about-body h2:first-child {
  margin-top: 0;
}

.about-body p {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--graphite);
  margin-bottom: var(--sp-4);
}

.about-body p em {
  color: var(--amber);
  font-style: italic;
}

.about-body ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: var(--sp-5);
}

.about-body ul li {
  padding: var(--sp-2) 0;
  padding-left: var(--sp-5);
  position: relative;
  font-size: var(--text-base);
  color: var(--graphite);
}

.about-body ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--amber);
  font-weight: 700;
}

/* ============================================
   SAMPLES PAGE
   ============================================ */
.samples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}

.sample-card {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  padding: var(--sp-6);
  transition: all 0.3s ease;
  position: relative;
}

.sample-card:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* Featured sample with preview image */
.sample-card.featured-sample {
  padding: 0;
  overflow: hidden;
  border-color: var(--amber);
  border-width: 2px;
}

.sample-card.featured-sample .sample-card-preview {
  position: relative;
  background: var(--paper-warm);
  padding: var(--sp-4);
  border-bottom: 1px solid var(--paper-edge);
}

.sample-card.featured-sample .sample-card-preview img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.sample-card.featured-sample .sample-card-preview::after {
  content: 'Available now';
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-2);
  background: var(--red-pen);
  color: var(--paper);
  padding: 4px 10px;
  font-family: 'Kalam', cursive;
  font-weight: 700;
  font-size: var(--text-xs);
  border-radius: 2px;
  transform: rotate(3deg);
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.02em;
}

.sample-card.featured-sample .sample-card-body {
  padding: var(--sp-6);
}

.sample-card-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--amber);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

.sample-card h3 {
  margin-bottom: var(--sp-3);
  font-size: var(--text-xl);
}

.sample-card p {
  color: var(--graphite-soft);
  margin-bottom: var(--sp-5);
  line-height: 1.5;
}

.sample-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-4);
  border-top: 1px dashed var(--rule);
}

.sample-card-size {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--mute);
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
}

.contact-info h2 {
  margin-bottom: var(--sp-5);
}

.contact-item {
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--paper-edge);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-item-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--amber);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.contact-item-value {
  font-family: 'Fraunces', serif;
  font-size: var(--text-lg);
  color: var(--ink);
}

.contact-form {
  background: var(--paper-warm);
  padding: var(--sp-7);
  border-radius: var(--radius);
  border: 1px solid var(--paper-edge);
}

.form-group {
  margin-bottom: var(--sp-4);
}

.form-group label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-xs);
  color: var(--ink);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  font-family: 'Fraunces', serif;
  font-size: var(--text-base);
  color: var(--ink);
  background: var(--paper);
  border: 1.5px solid var(--paper-edge);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--ink);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
  font-family: 'Fraunces', serif;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-up {
  animation: fadeUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.2s; }
.fade-up-3 { animation-delay: 0.3s; }
.fade-up-4 { animation-delay: 0.4s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero-grid,
  .specimen-grid,
  .author-grid,
  .about-hero-grid,
  .contact-grid,
  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-7);
  }

  .subject-grid,
  .pillars-grid,
  .bundles-grid,
  .testimonials-grid,
  .product-grid,
  .samples-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .shop-layout {
    grid-template-columns: 1fr;
  }

  .shop-filters {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-4);
  }

  .author-photo,
  .about-photo {
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  section {
    padding: var(--sp-8) 0;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links.open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    flex-direction: column;
    padding: var(--sp-5);
    border-bottom: 1px solid var(--paper-edge);
    gap: var(--sp-3);
  }

  .subject-grid,
  .pillars-grid,
  .bundles-grid,
  .testimonials-grid,
  .product-grid,
  .samples-grid {
    grid-template-columns: 1fr;
  }

  .shop-filters {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .credentials-inner {
    flex-direction: column;
    gap: var(--sp-3);
  }

  .credentials-inner .sep {
    display: none;
  }

  .author-stats {
    grid-template-columns: 1fr;
    text-align: center;
  }
}