/* ============================================
   VIBECODING — Master Style System
   Neobrutalism Design for Multi-Page Site
   ============================================ */

/* --- Google Fonts --- */
/* Loaded in HTML <head>:
   Space Grotesk (400-700) + Red Hat Display (700-900) */

/* --- Design Tokens --- */
:root {
  --yellow: #FFD700;
  --red: #FF5E5B;
  --blue: #5B8CFF;
  --green: #3DDC84;
  --purple: #A855F7;
  --pink: #FF6FB5;
  --orange: #FF8C42;
  --teal: #2DD4BF;
  --white: #FFFDF7;
  --black: #1A1A1A;
  --gray: #E8E4DB;
  --border: 3px;
  --shadow-sm: 3px 3px 0px var(--black);
  --shadow-md: 5px 5px 0px var(--black);
  --shadow-lg: 8px 8px 0px var(--black);
  --radius: 0px;
  --max-width: 900px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--black);
  background: #F0EDE0;
  background-image: radial-gradient(circle, rgba(26,26,26,0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-font-smoothing: antialiased;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.6rem; margin-bottom: 1rem; }
h3 { font-size: 1.2rem; margin-bottom: 0.75rem; }
h4 { font-size: 1rem; margin-bottom: 0.5rem; }

p {
  margin-bottom: 1rem;
  font-weight: 500;
}

a {
  color: var(--black);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 3px solid var(--yellow);
  transition: background 0.15s;
}

a:hover {
  background: var(--yellow);
}

strong { font-weight: 700; }
em { font-style: italic; }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Site Navigation --- */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1rem;
  margin: 0 auto 2rem;
  max-width: var(--max-width);
}

.site-nav .nav-link {
  display: inline-block;
  padding: 0.45em 0.9em;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  text-decoration: none;
  color: var(--black);
  background: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-sm);
  transition: transform 0.12s, box-shadow 0.12s, background 0.12s, color 0.12s;
  cursor: pointer;
  border-bottom: var(--border) solid var(--black);
}

.site-nav .nav-link:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--black);
  background: var(--yellow);
}

.site-nav .nav-link.active {
  background: var(--black);
  color: var(--yellow);
  cursor: default;
}

.site-nav .nav-link.active:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
}

/* --- Hero Section --- */
.hero {
  max-width: var(--max-width);
  margin: 0 auto 2.5rem;
  padding: 2.5rem 2rem;
  background: var(--yellow);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  background: var(--orange);
  border: var(--border) solid var(--black);
  border-radius: 50%;
  opacity: 0.4;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 80px;
  height: 80px;
  background: var(--blue);
  border: var(--border) solid var(--black);
  transform: rotate(45deg);
  opacity: 0.3;
}

.hero h1 {
  font-size: 2.5rem;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}

.hero .subtitle {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 0.5rem;
  position: relative;
  z-index: 1;
  max-width: 600px;
}

/* --- Chapter Card (Homepage Grid) --- */
.chapter-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  margin-bottom: 3rem;
}

.chapter-card {
  display: block;
  padding: 1.5rem 1.8rem;
  background: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--black);
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  border-bottom: var(--border) solid var(--black);
}

.chapter-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-lg);
  background: var(--white);
}

.chapter-card .chapter-num {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 900;
  font-size: 2.5rem;
  line-height: 1;
  opacity: 0.15;
  position: absolute;
  top: 0.8rem;
  right: 1rem;
}

.chapter-card .chapter-title {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
}

.chapter-card .chapter-desc {
  font-size: 0.88rem;
  font-weight: 500;
  opacity: 0.75;
  margin: 0;
  line-height: 1.5;
}

/* Chapter card accent colors */
.chapter-card[data-accent="yellow"] { border-left: 6px solid var(--yellow); }
.chapter-card[data-accent="green"]  { border-left: 6px solid var(--green); }
.chapter-card[data-accent="blue"]   { border-left: 6px solid var(--blue); }
.chapter-card[data-accent="purple"] { border-left: 6px solid var(--purple); }
.chapter-card[data-accent="orange"] { border-left: 6px solid var(--orange); }
.chapter-card[data-accent="teal"]   { border-left: 6px solid var(--teal); }
.chapter-card[data-accent="pink"]   { border-left: 6px solid var(--pink); }
.chapter-card[data-accent="red"]    { border-left: 6px solid var(--red); }

/* --- Chapter Content Page --- */
.chapter-header {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 2rem;
  background: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
  position: relative;
}

.chapter-header .chapter-badge {
  display: inline-block;
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 900;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3em 1em;
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0px var(--black);
  margin-bottom: 0.8rem;
}

.chapter-header h1 {
  font-size: 2rem;
  margin-bottom: 0.3rem;
}

.chapter-header .chapter-subtitle {
  font-size: 0.95rem;
  font-weight: 500;
  opacity: 0.7;
  margin: 0;
}

/* Badge color variants */
.badge-yellow { background: var(--yellow); }
.badge-green  { background: var(--green); }
.badge-blue   { background: var(--blue); }
.badge-purple { background: var(--purple); }
.badge-orange { background: var(--orange); }
.badge-teal   { background: var(--teal); }
.badge-pink   { background: var(--pink); }
.badge-red    { background: var(--red); }

/* --- Content Section (main chapter body) --- */
.content-section {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 2rem;
  background: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
}

.content-section h2 {
  font-size: 1.4rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--black);
  margin-bottom: 1.2rem;
}

.content-section h3 {
  font-size: 1.1rem;
  margin-top: 1.5rem;
}

.content-section ul, .content-section ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.content-section li {
  margin-bottom: 0.5rem;
  font-weight: 500;
}

/* --- Story Box (Andi's narrative) --- */
.story-box {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 1.8rem 2rem;
  background: var(--yellow);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
  position: relative;
}

.story-box::before {
  content: '📖';
  position: absolute;
  top: -12px;
  left: 1rem;
  font-size: 1.4rem;
  background: var(--white);
  border: 2px solid var(--black);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.story-box .story-label {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 900;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
  display: inline-block;
  background: var(--black);
  color: var(--yellow);
  padding: 0.2em 0.8em;
}

.story-box p {
  margin-bottom: 0.8rem;
  font-weight: 500;
}

.story-box p:last-child {
  margin-bottom: 0;
}

/* --- Dialogue Box (character speaking) --- */
.dialogue {
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  border-left: 5px solid var(--black);
  background: var(--gray);
  font-style: italic;
}

.dialogue .speaker {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 800;
  font-style: normal;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

/* --- Code Block --- */
pre {
  background: var(--black);
  color: #E8E4DB;
  padding: 1.2rem 1.5rem;
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
  margin: 1.2rem 0;
  overflow-x: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  font-weight: 500;
}

code {
  font-family: 'Courier New', Courier, monospace;
  background: var(--gray);
  padding: 0.15em 0.4em;
  border: 2px solid var(--black);
  font-size: 0.88em;
  font-weight: 600;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

/* --- Tip Box --- */
.tip-box {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 1.2rem 1.5rem;
  background: var(--green);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
}

.tip-box .tip-label {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 900;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: inline-block;
  background: var(--black);
  color: var(--green);
  padding: 0.2em 0.8em;
}

/* --- Warning Box --- */
.warning-box {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 1.2rem 1.5rem;
  background: var(--red);
  color: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
}

.warning-box .warning-label {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 900;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: inline-block;
  background: var(--black);
  color: var(--red);
  padding: 0.2em 0.8em;
}

/* --- Step Card (how-to steps) --- */
.step-card {
  display: flex;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  margin-bottom: 1rem;
  background: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-sm);
  align-items: flex-start;
}

.step-card .step-num {
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 900;
  font-size: 1.8rem;
  line-height: 1;
  opacity: 0.2;
  min-width: 2rem;
  text-align: center;
}

.step-card .step-content h4 {
  margin-bottom: 0.3rem;
}

.step-card .step-content p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

/* --- Progress Bar (chapter completion) --- */
.progress-bar {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  height: 8px;
  background: var(--gray);
  border: 2px solid var(--black);
  position: relative;
}

.progress-bar .progress-fill {
  height: 100%;
  background: var(--green);
  transition: width 0.3s;
}

/* --- Chapter Navigation (prev/next) --- */
.chapter-nav {
  max-width: var(--max-width);
  margin: 0 auto 3rem;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}

.chapter-nav a {
  display: inline-block;
  padding: 0.8em 1.5em;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--black);
  background: var(--white);
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-md);
  transition: transform 0.12s, box-shadow 0.12s;
  border-bottom: var(--border) solid var(--black);
}

.chapter-nav a:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
  background: var(--yellow);
}

.chapter-nav .next-btn {
  background: var(--yellow);
  margin-left: auto;
}

/* --- Footer --- */
.site-footer {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 1.5rem 2rem;
  background: var(--black);
  color: var(--white);
  border: var(--border) solid var(--black);
  text-align: center;
  font-size: 0.82rem;
  font-weight: 500;
}

.site-footer a {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

/* --- Utility Classes --- */
.accent-yellow { background: var(--yellow); }
.accent-green  { background: var(--green); }
.accent-blue   { background: var(--blue); }
.accent-purple { background: var(--purple); }
.accent-orange { background: var(--orange); }
.accent-teal   { background: var(--teal); }
.accent-pink   { background: var(--pink); }
.accent-red    { background: var(--red); }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

.text-center { text-align: center; }
.text-small { font-size: 0.85rem; }

/* --- Comparison Table --- */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-sm);
}

.compare-table th, .compare-table td {
  padding: 0.7rem 1rem;
  border: 2px solid var(--black);
  font-weight: 500;
  font-size: 0.88rem;
  text-align: left;
}

.compare-table th {
  background: var(--black);
  color: var(--white);
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

.compare-table tr:nth-child(even) {
  background: var(--gray);
}

/* --- Inline Badge --- */
.inline-badge {
  display: inline-block;
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 800;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2em 0.6em;
  border: 2px solid var(--black);
  box-shadow: 2px 2px 0px var(--black);
}

/* --- Emoji Icon Box --- */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
  border: var(--border) solid var(--black);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.5rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    padding: 1.5rem 1rem;
  }
  .hero h1 {
    font-size: 1.6rem;
  }
  .hero .subtitle {
    font-size: 0.88rem;
  }
  .chapter-header, .content-section, .story-box, .tip-box, .warning-box {
    padding: 1.2rem 1rem;
  }
  .chapter-header h1 {
    font-size: 1.4rem;
  }
  .content-section h2 {
    font-size: 1.2rem;
  }
  .chapter-card {
    padding: 1.2rem 1rem;
  }
  .chapter-card .chapter-num {
    font-size: 2rem;
  }
  .chapter-card .chapter-title {
    font-size: 1rem;
  }
  .site-nav {
    gap: 0.3rem;
    padding: 0.5rem 0.8rem;
  }
  .site-nav .nav-link {
    font-size: 0.62rem;
    padding: 0.35em 0.6em;
    border-width: 2px;
    box-shadow: 2px 2px 0px var(--black);
  }
  .chapter-nav {
    flex-direction: column;
  }
  .chapter-nav a {
    text-align: center;
  }
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.3rem; }
  h3 { font-size: 1.05rem; }
  pre {
    font-size: 0.75rem;
    padding: 0.8rem 1rem;
  }
  .step-card {
    flex-direction: column;
    gap: 0.5rem;
  }
  .compare-table {
    font-size: 0.78rem;
  }
  .compare-table th, .compare-table td {
    padding: 0.5rem 0.6rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.35rem;
  }
  .chapter-card .chapter-title {
    font-size: 0.92rem;
  }
  body {
    font-size: 14px;
  }
}
