/* ============================================
   The Practical Thinker — Companion Site
   Theme: Modern Minimalist
   ============================================ */

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

:root {
  /* Modern Minimalist Palette */
  --color-charcoal: #36454f;
  --color-slate: #708090;
  --color-light-gray: #d3d3d3;
  --color-off-white: #f7f7f5;
  --color-white: #ffffff;
  --color-near-black: #1c2127;

  /* Semantic Colours */
  --color-bg: var(--color-off-white);
  --color-surface: var(--color-white);
  --color-text: var(--color-near-black);
  --color-text-secondary: var(--color-charcoal);
  --color-text-muted: var(--color-slate);
  --color-text-light: #94a3b0;
  --color-border: #dcdfe3;
  --color-border-light: #eceef0;

  /* Accent — used sparingly */
  --color-accent: var(--color-charcoal);
  --color-accent-subtle: #e8eaed;
  --color-accent-warm: #c9a96e;

  /* Callout accents */
  --color-accent-green: #5a9a6a;
  --color-accent-green-bg: #eef5f0;
  --color-accent-amber: #c4943a;
  --color-accent-amber-bg: #faf5eb;
  --color-accent-teal: #4a8a84;
  --color-accent-teal-bg: #edf5f4;
  --color-accent-indigo: #6670a0;
  --color-accent-indigo-bg: #eff0f6;

  /* Typography */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Source Serif 4', Georgia, 'Times New Roman', serif;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Layout */
  --max-width: 1100px;
  --max-width-narrow: 700px;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-charcoal);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--color-near-black); }

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

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 247, 245, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-light);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand .logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: 0.3rem;
  list-style: none;
  align-items: center;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  text-decoration: none;
}
.nav-link:hover {
  color: var(--color-text);
  background: var(--color-accent-subtle);
}
.nav-link.active {
  color: var(--color-text);
  background: var(--color-accent-subtle);
  font-weight: 600;
}

/* Hamburger */
.nav-toggle {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
  width: 36px;
  height: 36px;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  margin: 4px auto;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: 5rem 2rem 4rem;
  text-align: center;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

.hero-content,
.hero-inner {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.series-label,
.hero-series-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  margin-bottom: 1.2rem;
}

.hero h1,
.hero-headline {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--color-text);
  margin-bottom: 1.2rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 2.2rem;
}

.hero-ctas {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--color-charcoal);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-near-black);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1.5px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-charcoal);
  color: var(--color-near-black);
}

.btn-signup {
  background: var(--color-white);
  color: var(--color-charcoal);
  font-weight: 600;
}
.btn-signup:hover {
  background: var(--color-off-white);
  color: var(--color-near-black);
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: 4.5rem 2rem;
}

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

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

.section-title {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-align: center;
  margin-bottom: 2.5rem;
  color: var(--color-text);
}

/* ============================================
   BOOKS SECTION (index.html)
   ============================================ */
.books-section {
  padding: 4.5rem 2rem;
  background: var(--color-bg);
}

.books-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.book-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}
.book-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--color-charcoal);
  opacity: 0.15;
  transition: opacity 0.25s ease;
}
.book-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}
.book-card:hover::before {
  opacity: 0.4;
}

.book-card-header {
  margin-bottom: 1rem;
}

.book-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
  color: var(--color-text);
}

.book-subtitle {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.book-card-content {
  flex-grow: 1;
}

.book-description {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 1.2rem;
}

.book-topics {
  margin-bottom: 1.5rem;
}

.topics-label {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  background: var(--color-accent-subtle);
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

.book-card-link {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-charcoal);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-light);
}
.book-card-link:hover {
  color: var(--color-near-black);
}
.book-card-link::after {
  content: '→';
  transition: transform 0.2s ease;
}
.book-card-link:hover::after {
  transform: translateX(3px);
}

/* ============================================
   FRAMEWORK SECTION (index.html)
   ============================================ */
.framework-section {
  padding: 4.5rem 2rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.framework-content {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.framework-intro {
  margin-bottom: 2.5rem;
}

.framework-name {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.framework-tagline {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.framework-trigger {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-light);
  font-style: italic;
  margin-top: 0.6rem;
}

.framework-diagram {
  max-width: 580px;
  margin: 0 auto 2.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.framework-diagram img {
  width: 100%;
  height: auto;
  display: block;
}

.framework-questions {
  display: flex;
  align-items: stretch;
  gap: 0;
  justify-content: center;
  margin-bottom: 2rem;
}

.framework-question {
  background: var(--color-bg);
  padding: 1.4rem 1.2rem;
  border-radius: var(--radius-md);
  text-align: center;
  flex: 1;
  max-width: 180px;
  border: 1px solid var(--color-border-light);
}

.question-number {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.framework-q1 { border-top: 3px solid #b85c5c; }
.framework-q1 .question-number { color: #b85c5c; }

.framework-q2 { border-top: 3px solid var(--color-accent-amber); }
.framework-q2 .question-number { color: var(--color-accent-amber); }

.framework-q3 { border-top: 3px solid var(--color-accent-green); }
.framework-q3 .question-number { color: var(--color-accent-green); }

.question-text {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-text);
  line-height: 1.4;
}

.question-answer {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.framework-arrow {
  display: flex;
  align-items: center;
  font-size: 1.2rem;
  color: var(--color-light-gray);
  padding: 0 0.6rem;
  font-weight: 300;
}

.framework-download {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.framework-download a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--color-border);
}
.framework-download a:hover {
  text-decoration-color: var(--color-charcoal);
}

/* ============================================
   INTEGRATION / HOW BOOKS WORK TOGETHER
   ============================================ */
.integration-section {
  padding: 4.5rem 2rem;
  background: var(--color-bg);
}

.integration-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.integration-feature {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--color-text);
}

.feature-text {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}
.feature-text em {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ============================================
   QUOTE SECTION
   ============================================ */
.quote-section {
  padding: 3.5rem 2rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.pull-quote {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  text-align: center;
  padding: 0;
  border: none;
  background: none;
}

.quote-text,
.pull-quote > p {
  font-family: var(--font-body);
  font-size: 1.35rem;
  font-style: italic;
  line-height: 1.65;
  color: var(--color-text-secondary);
  position: relative;
}

.pull-quote > p::before {
  content: '\201C';
  font-size: 3rem;
  line-height: 1;
  color: var(--color-light-gray);
  display: block;
  margin-bottom: 0.3rem;
}

.pull-quote cite {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 500;
  color: var(--color-text-light);
  margin-top: 1rem;
  letter-spacing: 0.02em;
}

/* ============================================
   SIGNUP BANNER (index.html)
   ============================================ */
.signup-banner {
  padding: 4rem 2rem;
  background: var(--color-bg);
}

.signup-content {
  max-width: 540px;
  margin: 0 auto;
  text-align: center;
}

.signup-heading {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.signup-description {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.signup-form .form-group {
  display: flex;
  gap: 0.5rem;
  max-width: 420px;
  margin: 0 auto;
}

.form-input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.65rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s ease;
}
.form-input::placeholder { color: var(--color-text-light); }
.form-input:focus { border-color: var(--color-charcoal); }

/* ============================================
   CTA BANNER (resources.html)
   ============================================ */
.cta-banner-section {
  padding: 0 2rem 4.5rem;
}

.cta-banner {
  background: var(--color-charcoal);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  text-align: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.cta-banner h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.cta-banner p {
  color: rgba(255,255,255,0.65);
  margin-bottom: 1.5rem;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.95rem;
}

.email-form {
  display: flex;
  gap: 0.5rem;
  max-width: 400px;
  margin: 0 auto;
}

.email-form input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.65rem 1rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08);
  color: var(--color-white);
  outline: none;
  transition: border-color 0.2s ease;
}
.email-form input::placeholder { color: rgba(255,255,255,0.35); }
.email-form input:focus { border-color: rgba(255,255,255,0.4); }

/* ============================================
   RESOURCE CARDS (resources.html)
   ============================================ */
.resources-section {
  padding-top: 2rem;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.2rem;
}

.resource-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}
.resource-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.resource-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-bottom: 0.8rem;
}
.resource-icon--framework { background: var(--color-accent-teal-bg); }
.resource-icon--article { background: var(--color-accent-subtle); }
.resource-icon--template { background: var(--color-accent-amber-bg); }
.resource-icon--visual { background: var(--color-accent-indigo-bg); }

.resource-type {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  margin-bottom: 0.3rem;
}

.resource-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}

.resource-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 1rem;
}

.resource-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.8rem;
  border-top: 1px solid var(--color-border-light);
}

.resource-book {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-light);
}

.resource-download {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-charcoal);
}
.resource-download:hover { color: var(--color-near-black); }

/* --- Filter Bar --- */
.filter-bar {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  justify-content: center;
}

.filter-btn {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover {
  border-color: var(--color-charcoal);
  color: var(--color-charcoal);
}
.filter-btn.active {
  background: var(--color-charcoal);
  color: var(--color-white);
  border-color: var(--color-charcoal);
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.section-narrow h2,
.section-inner.section-narrow h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 1.3rem;
  margin-top: 0;
  color: var(--color-text);
}

.section-narrow h2:not(:first-of-type) {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border-light);
}

.section-narrow > p,
.section-inner.section-narrow > p {
  margin-bottom: 1.2rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* Book Detail (about page) */
.book-detail {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border-light);
}
.book-detail:last-of-type {
  border-bottom: none;
}

.book-detail h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 0.2rem;
  color: var(--color-text);
}

.book-detail-subtitle {
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin-bottom: 1.3rem;
}

.book-detail h4 {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 1.2rem;
  margin-bottom: 0.4rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.72rem;
}

.book-detail p {
  margin-bottom: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.philosophy-quote {
  font-style: italic;
  padding: 1rem 1.4rem;
  background: var(--color-accent-subtle);
  border-left: 3px solid var(--color-charcoal);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 0.8rem 0;
  color: var(--color-text-secondary);
}

/* About CTA */
.about-diagram {
  max-width: 420px;
  margin: 2rem auto;
  padding: 1.5rem;
  background: var(--color-accent-subtle);
  border-radius: var(--radius-md);
  text-align: center;
}

.about-diagram img {
  width: 100%;
  height: auto;
  margin-bottom: 0.8rem;
}

.about-diagram-caption {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-style: italic;
  color: var(--color-text-muted);
}

.about-cta {
  text-align: center;
  padding: 2.5rem 0 0;
  border-top: 1px solid var(--color-border-light);
  margin-top: 2.5rem;
}

.about-cta h2 {
  margin-top: 0 !important;
  border-top: none !important;
  padding-top: 0 !important;
}

.about-cta-buttons {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

/* ============================================
   FOOTERS
   ============================================ */

/* Footer variant 1 (index, about) */
.footer {
  border-top: 1px solid var(--color-border-light);
  padding: 2rem 0;
  background: var(--color-bg);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright p {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: var(--color-text-light);
}

.footer-nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-nav a {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: var(--color-text-light);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--color-text); }

/* Footer variant 2 (resources) */
.site-footer {
  border-top: 1px solid var(--color-border-light);
  padding: 2rem 2rem;
  background: var(--color-bg);
}

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

.footer-text {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: var(--color-text-light);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  color: var(--color-text-light);
}
.footer-links a:hover { color: var(--color-text); }

/* ============================================
   BEFORE/AFTER SHOWCASE
   ============================================ */
.showcase-section {
  padding: 4.5rem 2rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.showcase-intro {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 500px;
  margin: -1.5rem auto 2.5rem;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.showcase-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  position: relative;
}

.showcase-card img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.showcase-label {
  position: absolute;
  top: 0.8rem;
  left: 0.8rem;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
}

.showcase-label--before {
  background: #f5e6e6;
  color: #b85c5c;
}

.showcase-label--after {
  background: var(--color-accent-teal-bg);
  color: var(--color-accent-teal);
}

/* ============================================
   PATTERN GALLERY
   ============================================ */
.patterns-section {
  padding: 4.5rem 2rem;
  background: var(--color-bg);
}

.patterns-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.pattern-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  text-align: center;
  transition: all 0.2s ease;
}
.pattern-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
}

.pattern-card img {
  width: 100%;
  height: auto;
  margin-bottom: 0.6rem;
}

.pattern-name {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.patterns-cta {
  text-align: center;
  margin-top: 2rem;
}

.patterns-cta a {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-charcoal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--color-border);
}
.patterns-cta a:hover {
  text-decoration-color: var(--color-charcoal);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  html { font-size: 16px; }

  .hero { padding: 3.5rem 1.5rem 2.5rem; }
  .hero h1, .hero-headline { font-size: 2rem; }

  .section, .books-section, .framework-section,
  .integration-section, .signup-banner { padding: 3rem 1.5rem; }

  .books-grid { grid-template-columns: 1fr; }
  .integration-grid { grid-template-columns: 1fr; gap: 1rem; }
  .resource-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .patterns-grid { grid-template-columns: repeat(3, 1fr); }

  .framework-questions {
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
  }
  .framework-question { max-width: 100%; }
  .framework-arrow {
    transform: rotate(90deg);
    padding: 0;
  }

  /* Mobile nav */
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0.8rem 1.5rem 1rem;
    gap: 0.2rem;
    box-shadow: var(--shadow-md);
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-toggle { display: block; }

  .footer-content, .footer-inner { flex-direction: column; gap: 0.8rem; text-align: center; }

  .signup-form .form-group,
  .email-form { flex-direction: column; }

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