/* ============================================================
   Boring Stuff Python — Indonesia
   Dark-first developer-tool aesthetic
   Inspiration: Vercel · Linear · Anthropic
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700;800;900&family=Geist+Mono:wght@400;500;600&display=swap');

/* ============================================================
   1. DESIGN TOKENS
   Type scale & spacing built on golden ratio (φ = 1.618)
   Base: 16px
   ============================================================ */

:root {
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', 'JetBrains Mono', ui-monospace, monospace;

  /* GOLDEN RATIO TYPE SCALE
     Each step = previous × 1.618 (or close, slightly tempered for body text legibility) */
  --fs-2xs: 0.694rem;     /* ~11px  — tiny labels, badges */
  --fs-xs:  0.833rem;     /* ~13px  — small / caption */
  --fs-sm:  0.917rem;     /* ~14.5px — body small */
  --fs-base: 1rem;        /* 16px   — body */
  --fs-md:  1.125rem;     /* 18px   — body large / lede */
  --fs-lg:  1.25rem;      /* 20px   — h4 */
  --fs-xl:  1.618rem;     /* ~26px  — h3 (φ) */
  --fs-2xl: 2.058rem;     /* ~33px  — h2 */
  --fs-3xl: 2.618rem;     /* ~42px  — h1 (φ²) */
  --fs-4xl: 3.625rem;     /* ~58px  — display */
  --fs-5xl: 4.236rem;     /* ~68px  — hero (φ³ approx) */

  /* GOLDEN-DERIVED SPACING SCALE
     Each step relates to the next by ~φ — yields visually harmonious rhythm */
  --sp-1: 0.25rem;        /* 4px */
  --sp-2: 0.382rem;       /* ~6px (1/φ²) */
  --sp-3: 0.618rem;       /* ~10px (1/φ) */
  --sp-4: 1rem;           /* 16px (base) */
  --sp-5: 1.618rem;       /* ~26px (φ) */
  --sp-6: 2.618rem;       /* ~42px (φ²) */
  --sp-7: 4.236rem;       /* ~68px (φ³) */
  --sp-8: 6.854rem;       /* ~110px (φ⁴) */
  --sp-9: 11.089rem;      /* ~178px (φ⁵) */

  /* LINE HEIGHTS */
  --lh-tight: 1.1;        /* hero headings */
  --lh-snug: 1.236;       /* h2/h3 (1+1/φ²·... close to 1.236) */
  --lh-normal: 1.5;       /* UI text */
  --lh-relaxed: 1.618;    /* body prose (golden) */

  /* RADII (also golden-derived) */
  --r-1: 0.382rem;        /* ~6px */
  --r-2: 0.618rem;        /* ~10px */
  --r-3: 1rem;            /* 16px */
  --r-4: 1.618rem;        /* ~26px */
  --r-pill: 999px;

  /* CONTENT RHYTHM */
  --content-max: 760px;
  --section-gap: var(--sp-8);   /* ~110px between major sections */
  --block-gap: var(--sp-6);     /* ~42px between header and grid */
}

/* ============================================================
   PAGE LAYOUT — section rhythm wrapper
   ============================================================ */

.page-section {
  margin: 0 0 var(--section-gap);
}

.page-section:last-child {
  margin-bottom: 0;
}

/* DARK (default) */
[data-md-color-scheme="slate"],
[data-md-color-scheme="default"] {
  --bg-base: #0a0a0a;
  --bg-elevated: #111111;
  --bg-card: #141414;
  --bg-hover: #1a1a1a;
  --bg-input: #161616;

  --border-default: #1f1f1f;
  --border-strong: #2a2a2a;
  --border-focus: #3a3a3a;

  --text-primary: #fafafa;
  --text-secondary: #a1a1a1;
  --text-tertiary: #6e6e6e;
  --text-muted: #555555;

  --accent: #ffffff;
  --accent-hover: #e5e5e5;
  --accent-bg: #fafafa;
  --accent-text: #0a0a0a;

  /* PYTHON BRAND PALETTE
     blue (#4584b6) → cyan (#3776ab) → yellow (#ffd43b)
     Iconic Python.org-style gradient — tech/automation vibe */
  --grad-1: #4584b6;   /* Python blue primary */
  --grad-2: #3776ab;   /* Python deep blue */
  --grad-3: #ffd43b;   /* Python yellow accent */
  --grad-4: #ffe873;   /* yellow soft */

  --green: #22c55e;
  --blue: #3b82f6;
  --violet: #8b5cf6;
  --pink: #ec4899;
  --amber: #f59e0b;
  --cyan: #06b6d4;

  --md-default-bg-color: var(--bg-base);
  --md-default-fg-color: var(--text-primary);
  --md-default-fg-color--light: var(--text-secondary);
  --md-default-fg-color--lighter: var(--text-tertiary);
  --md-typeset-color: var(--text-primary);
  --md-typeset-a-color: var(--text-primary);
  --md-primary-fg-color: var(--bg-base);
  --md-primary-bg-color: var(--text-primary);
  --md-accent-fg-color: var(--text-primary);
  --md-code-bg-color: var(--bg-elevated);
  --md-code-fg-color: var(--text-primary);
}

/* ============================================================
   2. GLOBAL RESET & TYPOGRAPHY
   ============================================================ */

html, body {
  background: var(--bg-base);
}

body, .md-typeset {
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "ss02", "cv01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.md-typeset {
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
  letter-spacing: -0.005em;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-typeset h5,
.md-typeset h6 {
  color: var(--text-primary);
  font-family: var(--font-sans);
  letter-spacing: -0.025em;
}

.md-typeset h1 {
  font-size: var(--fs-3xl);
  font-weight: 700;
  line-height: var(--lh-tight);
  margin: 0 0 var(--sp-5);
  letter-spacing: -0.035em;
}

.md-typeset h2 {
  font-size: var(--fs-2xl);
  font-weight: 600;
  line-height: var(--lh-snug);
  margin: var(--sp-7) 0 var(--sp-5);
  letter-spacing: -0.03em;
}

.md-typeset h3 {
  font-size: var(--fs-xl);
  font-weight: 600;
  line-height: var(--lh-snug);
  margin: var(--sp-6) 0 var(--sp-4);
  letter-spacing: -0.02em;
}

.md-typeset h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin: var(--sp-5) 0 var(--sp-3);
}

.md-typeset p {
  margin: var(--sp-4) 0;
  color: var(--text-secondary);
}

.md-typeset ul,
.md-typeset ol {
  margin: var(--sp-4) 0;
}

.md-typeset li {
  margin: var(--sp-3) 0;
}

.md-typeset strong {
  color: var(--text-primary);
  font-weight: 600;
}

.md-typeset a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease;
}

.md-typeset a:hover {
  text-decoration-color: var(--text-primary);
}

/* ============================================================
   3. HEADER & NAV
   ============================================================ */

.md-header {
  background: rgba(10, 10, 10, 0.7) !important;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-default);
  box-shadow: none !important;
  color: var(--text-primary) !important;
  height: 56px;
}

.md-header__inner {
  padding: 0 var(--sp-5);
}

.md-header__title {
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.md-header__button {
  color: var(--text-primary) !important;
}

.md-search__input {
  background: var(--bg-input) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-default);
  border-radius: var(--r-2) !important;
  font-size: var(--fs-sm);
}

.md-search__input::placeholder {
  color: var(--text-tertiary) !important;
}

.md-search__input:focus,
.md-search__input:hover {
  background: var(--bg-elevated) !important;
  border-color: var(--border-focus);
}

.md-tabs {
  background: transparent !important;
  border-bottom: 1px solid var(--border-default);
  color: var(--text-secondary) !important;
}

.md-tabs__list {
  margin-left: 0;
}

.md-tabs__link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary) !important;
  opacity: 1;
  margin-top: var(--sp-3);
}

.md-tabs__link:hover {
  color: var(--text-primary) !important;
}

.md-tabs__link--active {
  color: var(--text-primary) !important;
  font-weight: 600;
}

/* Side nav */
.md-nav {
  font-size: var(--fs-sm);
}

.md-nav__title {
  color: var(--text-primary) !important;
  font-weight: 600;
  font-size: var(--fs-sm);
}

.md-nav__link {
  color: var(--text-secondary) !important;
  margin-top: var(--sp-2);
  border-radius: var(--r-1);
  padding: var(--sp-2) var(--sp-3);
  transition: background 0.15s ease, color 0.15s ease;
}

.md-nav__link:hover {
  color: var(--text-primary) !important;
  background: var(--bg-card);
}

.md-nav__link--active {
  color: var(--text-primary) !important;
  font-weight: 500;
}

/* ============================================================
   4. HERO
   ============================================================ */

.hero {
  position: relative;
  margin: 0 -0.8rem var(--sp-8);
  padding: var(--sp-8) var(--sp-5) var(--sp-7);
  background:
    radial-gradient(ellipse 70% 50% at 20% 0%, rgba(69, 132, 182, 0.18), transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 80%, rgba(255, 212, 59, 0.08), transparent 70%),
    var(--bg-base);
  overflow: hidden;
}

/* Grid dots overlay */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(69, 132, 182, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 132, 182, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
  pointer-events: none;
}

/* Subtle glow line at bottom */
.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 800px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(69, 132, 182, 0.5), rgba(255, 212, 59, 0.4), transparent);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--sp-7);
  max-width: 1200px;
  margin: 0 auto;
  align-items: center;
}

@media (max-width: 76.1875em) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }
}

.hero-left {
  text-align: left;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--content-max);
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-4);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-1);
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--sp-5);
  letter-spacing: 0.02em;
}

.hero-eyebrow .mono {
  color: #ffd43b;
  font-family: var(--font-mono);
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.7);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px rgba(34, 197, 94, 0.7); }
  50% { opacity: 0.5; box-shadow: 0 0 4px rgba(34, 197, 94, 0.3); }
}

.hero h1 {
  font-size: clamp(var(--fs-2xl), 4.5vw, var(--fs-4xl)) !important;
  font-weight: 700 !important;
  line-height: 1.1 !important;
  letter-spacing: -0.04em !important;
  color: var(--text-primary) !important;
  margin: 0 0 var(--sp-5) !important;
}

.hero h1 .gradient {
  background: linear-gradient(135deg, #4584b6 0%, #5fa8dc 50%, #ffd43b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero h1 .caret {
  display: inline-block;
  color: #ffd43b;
  margin-left: 0.05em;
  font-weight: 400;
  animation: blink 1s steps(2, jump-none) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-subtitle {
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  color: var(--text-secondary);
  margin: 0 0 var(--sp-6);
  max-width: 52ch;
  font-weight: 400;
  letter-spacing: -0.005em;
}

.hero-cta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

/* ============================================================
   4b. IDE EDITOR (right side of hero)
   ============================================================ */

.ide {
  background: #0d0d0d;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(69, 132, 182, 0.08),
    0 24px 48px -12px rgba(0, 0, 0, 0.6),
    0 0 60px -12px rgba(255, 212, 59, 0.12);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.65;
}

.ide-tabs {
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, #181818 0%, #121212 100%);
  border-bottom: 1px solid var(--border-default);
  padding: 0 var(--sp-3);
}

.ide-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0.55rem 0.85rem;
  font-size: 0.7rem;
  color: var(--text-tertiary);
  border-right: 1px solid var(--border-default);
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.ide-tab.active {
  color: var(--text-primary);
  background: #0d0d0d;
  border-bottom: 1px solid #0d0d0d;
  position: relative;
  top: 1px;
}

.ide-tab-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ffd43b;
  display: inline-block;
}

.ide-tab-spacer {
  flex: 1;
}

.ide-action {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  padding: 0.3rem 0.7rem;
  margin-right: var(--sp-2);
  border-radius: var(--r-1);
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.25);
  cursor: pointer;
  transition: all 0.15s ease;
}

.ide-action:hover {
  background: rgba(34, 197, 94, 0.2);
}

.ide-body {
  display: grid;
  grid-template-columns: auto 1fr;
  background: #0d0d0d;
  position: relative;
  overflow: hidden;
}

.ide-gutter {
  display: flex;
  flex-direction: column;
  padding: var(--sp-4) 0.7rem var(--sp-4) var(--sp-3);
  border-right: 1px solid var(--border-default);
  color: var(--text-muted);
  font-size: 0.7rem;
  text-align: right;
  user-select: none;
  line-height: 1.65;
}

.ide-gutter span {
  display: block;
}

.ide-code {
  padding: var(--sp-4);
  white-space: pre-wrap;
  color: var(--text-primary);
  overflow-x: auto;
}

/* Python syntax tokens */
.ide-code .py-comment { color: #6b6e76; font-style: italic; }
.ide-code .py-keyword { color: #ff79c6; font-weight: 500; }
.ide-code .py-module  { color: #8be9fd; }
.ide-code .py-builtin { color: #8be9fd; }
.ide-code .py-fn      { color: #ffd43b; }
.ide-code .py-str     { color: #a5d6a7; }
.ide-code .py-fstring { color: #ce9178; }
.ide-code .py-var     { color: #f8f8f2; }
.ide-code .py-num     { color: #bd93f9; }
.ide-code .py-caret {
  display: inline-block;
  color: #ffd43b;
  font-weight: 700;
  animation: blink 1s steps(2, jump-none) infinite;
}

.ide-output {
  border-top: 1px solid var(--border-default);
  background: #080808;
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.ide-output-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid var(--border-default);
  color: var(--text-tertiary);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  background: #0a0a0a;
}

.ide-output-head .o-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  margin-right: 0.5rem;
  background: rgba(69, 132, 182, 0.15);
  color: #5fa8dc;
  border-radius: var(--r-1);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ide-output-head .o-time {
  color: #4ade80;
  font-weight: 500;
}

.ide-output-body {
  padding: var(--sp-3) var(--sp-4);
  white-space: pre-wrap;
  color: var(--text-secondary);
  line-height: 1.7;
}

.ide-output-body .o-ok { color: #4ade80; }
.ide-output-body .o-info { color: #ffd43b; display: block; padding-top: 0.4rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-5);
  border-radius: var(--r-2);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  text-decoration: none !important;
  letter-spacing: -0.005em;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1;
}

.btn-primary {
  background: var(--accent-bg);
  color: var(--accent-text) !important;
  border-color: var(--accent-bg);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--bg-card);
  color: var(--text-primary) !important;
  border-color: var(--border-default);
}

.btn-ghost:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.btn-arrow {
  font-size: 1.05em;
  transition: transform 0.15s ease;
}

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

/* ============================================================
   5. STAT STRIP
   ============================================================ */

.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  margin: 0 0 var(--sp-8);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-3);
  overflow: hidden;
}

/* ============================================================
   5b. SERVER STRIP (mono / automation vibe)
   ============================================================ */

.server-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  margin: 0 0 var(--sp-8);
  background: linear-gradient(180deg, #0f0f0f 0%, #0a0a0a 100%);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  overflow: hidden;
  font-family: var(--font-mono);
  position: relative;
}

.server-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    180deg,
    transparent 0,
    transparent 2px,
    rgba(255, 255, 255, 0.012) 2px,
    rgba(255, 255, 255, 0.012) 3px
  );
  pointer-events: none;
}

.server-item {
  position: relative;
  padding: var(--sp-4) var(--sp-5);
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.server-item:last-child {
  border-right: none;
}

.server-label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
}

.server-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffd43b;
  box-shadow: 0 0 6px rgba(255, 212, 59, 0.55);
  animation: pulse 1.6s ease-in-out infinite;
}

.server-value {
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
  font-family: var(--font-mono);
}

.server-meta {
  font-size: var(--fs-2xs);
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

.stat-item {
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
  border-right: 1px solid var(--border-default);
  position: relative;
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  display: block;
  font-size: var(--fs-2xl);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: var(--lh-tight);
  font-feature-settings: "ss02";
}

.stat-label {
  display: block;
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  font-weight: 500;
  margin-top: var(--sp-3);
  letter-spacing: -0.005em;
}

/* ============================================================
   6. SECTION HEADERS
   ============================================================ */

.section-header {
  margin: 0 auto var(--sp-6);
  text-align: center;
  max-width: 64ch;
}

.section-eyebrow {
  display: inline-block;
  padding: var(--sp-1) var(--sp-3);
  background: transparent;
  border: 1px solid var(--border-default);
  color: #ffd43b;
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-4);
  border-radius: var(--r-1);
}

.section-title {
  font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-3xl)) !important;
  font-weight: 600 !important;
  letter-spacing: -0.035em !important;
  margin: 0 0 var(--sp-4) !important;
  line-height: var(--lh-snug) !important;
  color: var(--text-primary) !important;
  max-width: 22ch;
  margin-inline: auto !important;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  font-weight: 400;
  letter-spacing: -0.005em;
  max-width: 56ch;
  margin-inline: auto;
}

/* ============================================================
   7. FEATURE GRID
   ============================================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  margin: var(--sp-5) 0 var(--sp-8);
  background: var(--border-default);
  border: 1px solid var(--border-default);
  border-radius: var(--r-3);
  overflow: hidden;
}

.feature-card {
  padding: var(--sp-5);
  background: var(--bg-card);
  transition: background 0.2s ease;
  position: relative;
}

.feature-card:hover {
  background: var(--bg-hover);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  margin-bottom: var(--sp-4);
  font-size: 1.05rem;
}

.feature-card h3 {
  font-size: var(--fs-md) !important;
  font-weight: 600 !important;
  margin: 0 0 var(--sp-3) !important;
  color: var(--text-primary) !important;
  letter-spacing: -0.015em !important;
  line-height: var(--lh-snug) !important;
}

.feature-card p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-normal);
  margin: 0;
  letter-spacing: -0.003em;
}

/* ============================================================
   8. AUDIENCE LIST
   ============================================================ */

.audience-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--sp-3);
  margin: var(--sp-5) 0 var(--sp-8);
}

.audience-item {
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-4);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  transition: border-color 0.15s ease, background 0.15s ease;
  align-items: flex-start;
}

.audience-item:hover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

.audience-emoji {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
}

.audience-text strong {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: var(--sp-2);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.audience-text span {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: var(--lh-normal);
}

/* ============================================================
   9. START CARDS
   ============================================================ */

.start-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: var(--sp-3);
  margin: var(--sp-5) 0 var(--sp-7);
}

.start-card {
  display: flex !important;
  flex-direction: column;
  padding: var(--sp-5);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-3);
  text-decoration: none !important;
  color: var(--text-primary) !important;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.start-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.start-card:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.start-card:hover::before {
  opacity: 0.4;
}

.start-card-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  border-radius: var(--r-1);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--fs-xs);
  margin-bottom: var(--sp-4);
}

.start-card h3 {
  font-size: var(--fs-md) !important;
  font-weight: 600 !important;
  margin: 0 0 var(--sp-3) !important;
  letter-spacing: -0.02em !important;
  line-height: var(--lh-snug) !important;
  color: var(--text-primary) !important;
}

.start-card p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-normal);
  margin: 0 0 var(--sp-5);
  flex: 1;
}

.start-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-top: auto;
  transition: gap 0.15s ease;
}

.start-card:hover .start-card-arrow {
  gap: var(--sp-3);
}

/* ============================================================
   10. CLOSING QUOTE
   ============================================================ */

.closing-quote {
  margin: var(--sp-8) 0 var(--sp-7);
  padding: var(--sp-7) var(--sp-5);
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(69, 132, 182, 0.1), transparent 70%),
    var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-4);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing-quote p {
  font-family: var(--font-sans);
  font-size: clamp(var(--fs-md), 2.2vw, var(--fs-xl));
  line-height: var(--lh-snug);
  max-width: 56ch;
  margin: 0 auto;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  font-weight: 500;
}

.closing-quote-mark {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--fs-3xl);
  font-weight: 800;
  background: linear-gradient(135deg, #4584b6 0%, #ffd43b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: var(--sp-4);
}

/* ============================================================
   11. SITE ATTRIBUTION
   ============================================================ */

.site-attribution {
  text-align: center;
  margin: var(--sp-7) auto var(--sp-5);
  max-width: 720px;
  padding: var(--sp-5);
  border-top: 1px solid var(--border-default);
}

.site-attribution p {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  margin: 0;
  line-height: var(--lh-relaxed);
}

.site-attribution a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 3px;
  font-weight: 500;
}

.site-attribution a:hover {
  color: var(--text-primary);
}

/* ============================================================
   12. CONTENT PAGES (article)
   ============================================================ */

.md-typeset .admonition,
.md-typeset details {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-default) !important;
  border-left: 3px solid var(--violet) !important;
  border-radius: var(--r-2) !important;
  box-shadow: none !important;
  color: var(--text-secondary);
  padding: var(--sp-4) var(--sp-5);
  margin: var(--sp-5) 0;
}

.md-typeset .admonition-title,
.md-typeset summary {
  background: transparent !important;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--text-primary) !important;
  letter-spacing: -0.005em;
  margin-bottom: var(--sp-3);
  padding-left: var(--sp-5) !important;
}

.md-typeset .admonition.tip,
.md-typeset details.tip { border-left-color: var(--green) !important; }
.md-typeset .admonition.warning,
.md-typeset details.warning { border-left-color: var(--amber) !important; }
.md-typeset .admonition.info,
.md-typeset details.info { border-left-color: var(--blue) !important; }
.md-typeset .admonition.example,
.md-typeset details.example { border-left-color: var(--cyan) !important; }
.md-typeset .admonition.note,
.md-typeset details.note { border-left-color: var(--violet) !important; }
.md-typeset .admonition.quote,
.md-typeset details.quote { border-left-color: var(--text-tertiary) !important; }

.md-typeset pre,
.md-typeset pre > code {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  font-size: var(--fs-sm);
  font-family: var(--font-mono);
  line-height: var(--lh-normal);
}

.md-typeset code {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-1);
  padding: 0.1em 0.4em;
  font-size: 0.88em;
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-weight: 500;
}

.md-typeset pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-primary);
}

/* Tables */
.md-typeset table:not([class]) {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  overflow: hidden;
  font-size: var(--fs-sm);
  margin: var(--sp-5) 0;
}

.md-typeset table:not([class]) th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-default);
  padding: var(--sp-3) var(--sp-4);
}

.md-typeset table:not([class]) td {
  border-top: 1px solid var(--border-default);
  color: var(--text-secondary);
  padding: var(--sp-3) var(--sp-4);
}

.md-typeset table:not([class]) tr:hover td {
  background: var(--bg-hover);
}

/* Buttons in content */
.md-typeset .md-button {
  background: var(--bg-card) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-default) !important;
  border-radius: var(--r-2) !important;
  font-family: var(--font-sans) !important;
  font-size: var(--fs-sm) !important;
  font-weight: 500 !important;
  padding: var(--sp-3) var(--sp-5) !important;
  letter-spacing: -0.005em !important;
  transition: all 0.15s ease;
  box-shadow: none !important;
  margin: var(--sp-3) var(--sp-2) var(--sp-3) 0 !important;
}

.md-typeset .md-button:hover {
  background: var(--bg-hover) !important;
  border-color: var(--border-strong) !important;
  transform: translateY(-1px);
}

.md-typeset .md-button--primary {
  background: var(--accent-bg) !important;
  color: var(--accent-text) !important;
  border-color: var(--accent-bg) !important;
}

.md-typeset .md-button--primary:hover {
  background: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
}

/* Tabbed content */
.md-typeset .tabbed-set > input:checked + label {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.md-typeset .tabbed-set > label {
  color: var(--text-tertiary);
  font-size: var(--fs-sm);
  font-weight: 500;
}

/* Footer atribusi tiap halaman bab */
.atribusi-bab {
  margin-top: var(--sp-7);
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  line-height: var(--lh-relaxed);
}

.atribusi-bab a {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ========================================
   CHEATSHEET — quick reference di akhir bab
   ======================================== */

.cheatsheet {
  margin: var(--sp-7) 0 var(--sp-5);
  padding: var(--sp-5);
  background: linear-gradient(135deg, rgba(69, 132, 182, 0.1), rgba(255, 212, 59, 0.06));
  border: 1px solid var(--border-strong);
  border-radius: var(--r-3);
  position: relative;
}

.cheatsheet::before {
  content: "📋 CHEATSHEET";
  position: absolute;
  top: -10px;
  left: 20px;
  padding: 0.2rem 0.7rem;
  background: var(--bg-base);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.cheatsheet h3 {
  font-size: var(--fs-md) !important;
  margin: var(--sp-4) 0 var(--sp-3) !important;
  color: var(--text-primary) !important;
}

.cheatsheet h3:first-child {
  margin-top: var(--sp-3) !important;
}

.cheatsheet code {
  background: var(--bg-elevated);
  border-color: var(--border-strong);
}

.cheatsheet table {
  margin: var(--sp-3) 0 !important;
  font-size: var(--fs-xs);
}

.cheatsheet table th,
.cheatsheet table td {
  padding: var(--sp-2) var(--sp-3) !important;
}

.cheatsheet pre {
  margin: var(--sp-3) 0 !important;
  font-size: 0.8rem;
}

/* Footer */
.md-footer,
.md-footer-meta {
  background: var(--bg-base) !important;
  border-top: 1px solid var(--border-default);
}

.md-footer-meta__inner {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* Search box overlay */
.md-search-result__meta {
  background: var(--bg-card);
  color: var(--text-tertiary);
}

.md-search-result__article {
  background: var(--bg-base);
}

/* Selection */
::selection {
  background: rgba(255, 212, 59, 0.4);
  color: var(--bg-base);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 5px;
  border: 2px solid var(--bg-base);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================================
   MERMAID DIAGRAMS
   ============================================================ */

.mermaid {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-2);
  padding: var(--sp-5);
  margin: var(--sp-5) 0 var(--sp-3);
  text-align: center;
  overflow-x: auto;
}

.mermaid svg {
  max-width: 100%;
  height: auto;
}

/* Caption / penjelasan cara baca flowchart */
.flowchart-caption {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r-2);
  padding: var(--sp-4) var(--sp-5);
  margin: 0 0 var(--sp-5);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
}

.flowchart-caption .label {
  display: inline-block;
  font-size: var(--fs-2xs);
  font-weight: 700;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-3);
}

.flowchart-caption ol,
.flowchart-caption ul {
  margin: var(--sp-3) 0 0;
  padding-left: var(--sp-5);
}

.flowchart-caption li {
  margin: var(--sp-2) 0;
}

.flowchart-caption code {
  background: var(--bg-elevated);
  font-size: 0.88em;
}

.flowchart-caption strong {
  color: var(--text-primary);
}

/* ============================================================
   MOBILE — golden ratio scaling preserved
   ============================================================ */

@media (max-width: 76.1875em) {
  :root {
    --sp-7: 3rem;
    --sp-8: 4.5rem;
    --sp-9: 6rem;
  }
  .md-typeset { font-size: var(--fs-sm); }
  .hero { padding: var(--sp-7) var(--sp-4) var(--sp-6); }
  .hero-grid { grid-template-columns: 1fr !important; gap: var(--sp-5) !important; }
  .hero-left { text-align: left; }
  .stat-item { padding: var(--sp-4) var(--sp-3); }
  .stat-number { font-size: var(--fs-xl); }
  .ide { font-size: 0.72rem; }
  .ide-tab { padding: 0.5rem 0.6rem; font-size: 0.66rem; }
  .ide-gutter { padding: var(--sp-3) 0.5rem var(--sp-3) var(--sp-2); font-size: 0.65rem; }
  .ide-code { padding: var(--sp-3); }
  .ide-output-body { font-size: 0.7rem; }
}

@media (max-width: 600px) {
  .hero { padding: var(--sp-6) var(--sp-3) var(--sp-5); margin: 0 -0.5rem var(--sp-7); }
  .hero h1 { font-size: var(--fs-2xl) !important; line-height: 1.15 !important; }
  .hero-subtitle { font-size: var(--fs-base); }
  .hero-cta { flex-direction: column; align-items: stretch; width: 100%; }
  .hero-cta .btn { justify-content: center; }
  .btn { justify-content: center; }

  /* legacy stat-strip */
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid var(--border-default); }
  .stat-item:nth-child(2) { border-right: none; }

  /* server-strip mobile: 2-col grid, internal borders */
  .server-strip { grid-template-columns: repeat(2, 1fr); }
  .server-item { padding: var(--sp-3) var(--sp-4); }
  .server-item:nth-child(1), .server-item:nth-child(2) { border-bottom: 1px solid var(--border-default); }
  .server-item:nth-child(2n) { border-right: none; }
  .server-value { font-size: var(--fs-lg); }

  /* IDE compact on phones */
  .ide { font-size: 0.66rem; }
  .ide-tabs { padding: 0 var(--sp-2); }
  .ide-tab { padding: 0.45rem 0.5rem; font-size: 0.62rem; }
  .ide-tab span:not(.ide-tab-dot) { display: none; }
  .ide-tab.active span:not(.ide-tab-dot) { display: inline; }
  .ide-action { font-size: 0.62rem; padding: 0.25rem 0.55rem; }
  .ide-gutter { padding: var(--sp-3) 0.4rem var(--sp-3) var(--sp-2); font-size: 0.6rem; }
  .ide-code { padding: var(--sp-3) var(--sp-3) var(--sp-3) var(--sp-2); }
  .ide-output-head { padding: 0.4rem 0.6rem; font-size: 0.58rem; }
  .ide-output-body { padding: var(--sp-2) var(--sp-3); font-size: 0.66rem; }

  .closing-quote { padding: var(--sp-6) var(--sp-4); }
}