/* ============================================================
   miniMerch — Design System
   Mobile-first. Breakpoints: sm 480, md 768, lg 1024, xl 1440
   ============================================================ */

/* ── Variables ────────────────────────────────────────────── */
:root {
  /* Colours */
  --color-bg:            #0a0a0f;
  --color-bg-secondary:  #12121a;
  --color-bg-card:       #1a1a24;
  --color-bg-card-hover: #22222e;

  --color-primary:       #FFD700;
  --color-primary-dark:  #b39b00;
  --color-primary-hover: #ffe440;
  --color-primary-glow:  rgba(255, 215, 0, 0.3);

  --color-secondary:     #00D4AA;
  --color-secondary-dark:#00a080;

  --color-accent:        #FF6B6B;

  --color-text:          #ffffff;
  --color-text-secondary:#a0a0b0;
  --color-text-muted:    #606070;

  --color-success:       #00D4AA;
  --color-warning:       #FFB800;
  --color-error:         #FF4757;

  --color-border:        #2a2a3a;
  --color-border-light:  #3a3a4a;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

  /* Font sizes — mobile base values */
  --font-size-xs:   0.75rem;
  --font-size-sm:   0.875rem;
  --font-size-base: 1rem;
  --font-size-lg:   1.125rem;
  --font-size-xl:   1.25rem;
  --font-size-2xl:  1.5rem;
  --font-size-3xl:  1.75rem;
  --font-size-4xl:  2.25rem;
  --font-size-5xl:  2.75rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:   0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:   0 4px 6px rgba(0,0,0,0.4);
  --shadow-lg:   0 10px 25px rgba(0,0,0,0.5);
  --shadow-xl:   0 20px 50px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px var(--color-primary-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --max-width:     1200px;
  --header-height: 60px;
}

/* Scale up on larger screens */
@media (min-width: 768px) {
  :root {
    --header-height: 72px;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
  }
}

@media (min-width: 1440px) {
  :root {
    --max-width:     1400px;
    --font-size-5xl: 4rem;
  }
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
}

/* Fluid headings — clamp prevents them from being too large on mobile
   or too small on desktop */
h1 { font-size: clamp(1.75rem, 8vw,   var(--font-size-5xl)); }
h2 { font-size: clamp(1.35rem, 5vw,   var(--font-size-3xl)); }
h3 { font-size: clamp(1.05rem, 3.5vw, var(--font-size-2xl)); }
h4 { font-size: var(--font-size-xl); }

p { color: var(--color-text-secondary); }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ── Code ─────────────────────────────────────────────────── */
code {
  font-family: var(--font-mono);
  background: var(--color-bg-secondary);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  font-size: 0.875em;
  word-break: break-word;
}

pre {
  font-family: var(--font-mono);
  background: var(--color-bg-secondary);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  line-height: 1.6;
  tab-size: 2;
}

@media (min-width: 480px) { pre { font-size: var(--font-size-sm); } }

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  word-break: normal;
  white-space: pre;
}

/* .code-block — named class replacing repetitive inline styles in guides */
.code-block {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: var(--space-4) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  position: relative;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  background: none;
  padding: 0;
  display: block;
  white-space: pre;
  word-break: normal;
  color: var(--color-text);
}

@media (min-width: 480px) {
  .code-block code { font-size: var(--font-size-sm); }
}

/* .table-wrap — prevents tables causing horizontal scroll */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-4) 0;
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

th {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 600;
}

td {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }

/* ── Layout ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 480px)  { .container { padding: 0 var(--space-6); } }
@media (min-width: 1024px) { .container { padding: 0 var(--space-8); } }
@media (min-width: 1440px) { .container { padding: 0 var(--space-12); } }

.section { padding: var(--space-12) 0; }
@media (min-width: 768px)  { .section { padding: var(--space-16) 0; } }
@media (min-width: 1440px) { .section { padding: var(--space-24) 0; } }

.section-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) { .section-header { margin-bottom: var(--space-16); } }

.section-title { color: var(--color-text); }

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: var(--space-4) auto 0;
}

@media (min-width: 768px) { .section-subtitle { font-size: var(--font-size-lg); } }

/* ── Header ───────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover { color: var(--color-text); }
.logo-icon  { font-size: 1.4em; line-height: 1; }

/* Desktop nav — hidden on mobile, shown at lg+ */
.nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 1024px) { .nav { display: flex; } }

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--space-2) 0;
  position: relative;
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active { color: var(--color-text); }

.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* ── Hamburger toggle ─────────────────────────────────────── */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--color-primary);
  background: rgba(255, 215, 0, 0.05);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base), background var(--transition-fast);
}

.nav-toggle:hover .nav-toggle-bar { background: var(--color-text); }

/* Animate bars into X when open */
.nav-toggle.open .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.open .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 1024px) { .nav-toggle { display: none; } }

/* ── Slide-in nav drawer ──────────────────────────────────── */
.nav-drawer {
  position: fixed;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  width: min(300px, 85vw);
  background: var(--color-bg-card);
  border-left: 1px solid var(--color-border);
  z-index: 999;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-drawer.open { transform: translateX(0); }

.nav-drawer .nav-link {
  font-size: var(--font-size-base);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  display: block;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-drawer .nav-link:hover,
.nav-drawer .nav-link.active {
  background: var(--color-bg-card-hover);
  color: var(--color-text);
}

.nav-drawer .nav-link::after { display: none; }

@media (min-width: 1024px) { .nav-drawer { display: none; } }

/* ── Overlay backdrop ─────────────────────────────────────── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

@media (min-width: 1024px) { .nav-overlay { display: none !important; } }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--header-height);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,215,0,0.07) 0%, transparent 70%),
    var(--color-bg);
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: min(800px, 100vw);
  height: min(800px, 100vw);
  background: radial-gradient(circle, rgba(255,215,0,0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  padding: var(--space-8) var(--space-4);
  width: 100%;
}

@media (min-width: 480px) { .hero-content { padding: var(--space-10) var(--space-6); } }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

@media (min-width: 480px) { .hero-badge { font-size: var(--font-size-sm); } }

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

.hero-title {
  font-size: clamp(2rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 50%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: clamp(var(--font-size-base), 3vw, var(--font-size-xl));
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
  white-space: nowrap;
  line-height: 1;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary);
  color: #000;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--color-primary-glow);
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  border-radius: var(--radius-xl);
}

/* Full-width buttons on small phones */
@media (max-width: 479px) {
  .btn-lg {
    width: 100%;
    padding: var(--space-4);
  }
  .hero-actions { flex-direction: column; }
}

/* ── Node status ──────────────────────────────────────────── */
.node-status {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin: var(--space-10) auto 0;
  max-width: 600px;
  width: 100%;
}

.node-status-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.node-status-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.node-status-icon.detected     { background: rgba(0,212,170,0.15); }
.node-status-icon.not-detected  { background: rgba(255,71,87,0.15); }
.node-status-icon.checking      { background: rgba(255,215,0,0.15); animation: pulse 1.5s infinite; }

.node-status-title    { font-weight: 600; color: var(--color-text); font-size: var(--font-size-base); }
.node-status-subtitle { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-top: 2px; }

.node-status-body         { display: none; }
.node-status-body.visible { display: block; }

.node-status-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (max-width: 479px) {
  .node-status-actions            { flex-direction: column; }
  .node-status-actions .btn       { width: 100%; }
}

/* ── Cards grid ───────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 480px) {
  .cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: var(--space-5);
  }
}

@media (min-width: 768px) { .cards-grid { gap: var(--space-6); } }

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 480px) { .card { padding: var(--space-6); } }

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

a.card { text-decoration: none; }
a.card:hover { color: inherit; }

.card-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-top: auto;
}

.card-link svg { transition: transform var(--transition-fast); }
.card:hover .card-link svg { transform: translateX(4px); }

/* ── Steps ────────────────────────────────────────────────── */
.steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  max-width: 700px;
  margin: 0 auto;
}

@media (min-width: 768px) { .steps { gap: var(--space-8); } }

.step {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-base);
}

.step-content h3 { color: var(--color-text); margin-bottom: var(--space-2); }
.step-content p  { font-size: var(--font-size-sm); line-height: 1.7; }

/* ── Platform cards ───────────────────────────────────────── */
.platform-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (min-width: 480px) {
  .platform-cards {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-4);
  }
}

.platform-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.platform-card:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-card-hover);
  color: inherit;
}

.platform-icon  { font-size: 1.75rem; width: 40px; text-align: center; flex-shrink: 0; }
.platform-name  { font-weight: 600; color: var(--color-text); font-size: var(--font-size-sm); }
.platform-label { font-size: var(--font-size-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* ── FAQ Accordion ────────────────────────────────────────── */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
  line-height: 1.4;
}

.faq-question:hover { background: var(--color-bg-card-hover); }

.faq-question svg {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-secondary);
}

.faq-item.open .faq-question svg { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

/* Generous max-height — no content should ever be clipped */
.faq-item.open .faq-answer { max-height: 2000px; }

.faq-answer-inner {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.faq-answer-inner p             { margin-bottom: var(--space-3); }
.faq-answer-inner p:last-child  { margin-bottom: 0; }

.faq-answer-inner ul,
.faq-answer-inner ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
}

.faq-answer-inner li {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.faq-answer-inner pre { margin: var(--space-3) 0; }

/* ── Callouts ─────────────────────────────────────────────── */
.callout {
  background: var(--color-bg-card);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-4) var(--space-5);
  margin: var(--space-4) 0;
}

.callout-warning { border-left-color: var(--color-warning); }
.callout-info    { border-left-color: var(--color-secondary); }
.callout-error   { border-left-color: var(--color-error); }

.callout-title {
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
}

.callout p, .callout li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2);
}

.callout p:last-child   { margin-bottom: 0; }
.callout ul             { padding-left: var(--space-5); }

/* ── Guide pages ──────────────────────────────────────────── */
.guide-header {
  padding-top: calc(var(--header-height) + var(--space-8));
  padding-bottom: var(--space-8);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,215,0,0.06) 0%, transparent 70%),
    var(--color-bg-secondary);
  text-align: center;
}

@media (min-width: 768px) {
  .guide-header {
    padding-top: calc(var(--header-height) + var(--space-12));
    padding-bottom: var(--space-12);
  }
}

.guide-header h1 { color: var(--color-text); margin-bottom: var(--space-4); }

.guide-header > .container > p,
.guide-header p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .guide-header > .container > p,
  .guide-header p { font-size: var(--font-size-lg); }
}

.guide-nav {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.guide-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

@media (min-width: 480px) { .guide-content { padding: var(--space-10) var(--space-6); } }
@media (min-width: 768px) { .guide-content { padding: var(--space-12) var(--space-6); } }

.guide-section { margin-bottom: var(--space-10); }
@media (min-width: 768px) { .guide-section { margin-bottom: var(--space-12); } }

.guide-section h2 {
  color: var(--color-text);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.guide-section h3 {
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-size: var(--font-size-lg);
}

.guide-section p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
}

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

.guide-section ul,
.guide-section ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.guide-section li {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-bottom: var(--space-1);
}

.guide-section pre { margin: var(--space-4) 0; }

/* ── Studio page ──────────────────────────────────────────── */
.platform-tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.platform-tab {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

@media (min-width: 480px) {
  .platform-tab { font-size: var(--font-size-base); padding: 0.75rem 1.5rem; }
}

.platform-tab.active               { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.platform-tab:hover:not(.active)   { color: var(--color-text); }

.platform-pane        { display: none; }
.platform-pane.active { display: block; }

.download-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

@media (min-width: 600px) {
  .download-row { flex-direction: row; flex-wrap: wrap; align-items: center; }
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: #000;
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: var(--font-size-base);
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: background var(--transition-base), transform var(--transition-fast);
  box-shadow: var(--shadow-glow);
  width: 100%;
  text-align: center;
}

@media (min-width: 600px) { .download-btn { width: auto; } }

.download-btn:hover {
  background: var(--color-primary-hover);
  color: #000;
  transform: translateY(-1px);
}

.download-btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  box-shadow: none;
}

.download-btn-secondary:hover {
  background: var(--color-bg-card-hover);
  color: var(--color-text);
  border-color: var(--color-primary);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  height: 1.8rem;
  background: var(--color-primary);
  color: #000;
  font-weight: 800;
  font-size: var(--font-size-xs);
  border-radius: 50%;
  flex-shrink: 0;
  margin-right: var(--space-2);
}

.step-row {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.step-row .step-content { flex: 1; min-width: 0; }

.warning-box {
  background: rgba(255, 200, 0, 0.06);
  border: 1px solid rgba(255, 200, 0, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-4) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.warning-box strong { color: var(--color-primary); }

/* ── install.html platform grid ───────────────────────────── */
.platform-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

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

/* ── Check items (install.html) ───────────────────────────── */
.check-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
}

.check-item.success { background: rgba(0,212,170,0.08); border-color: rgba(0,212,170,0.2); }
.check-item.error   { background: rgba(255,71,87,0.08);  border-color: rgba(255,71,87,0.2); }
.check-item .check-icon { font-size: 1.1rem; flex-shrink: 0; }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0;
  margin-top: var(--space-16);
}

@media (min-width: 768px) { .footer { padding: var(--space-12) 0; margin-top: var(--space-24); } }

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

@media (min-width: 480px) { .footer-links { gap: var(--space-6); } }

.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.footer-link:hover { color: var(--color-primary); }
.footer-copy       { color: var(--color-text-muted); font-size: var(--font-size-sm); }

/* ── Utilities ────────────────────────────────────────────── */
.text-center           { text-align: center; }
.text-primary          { color: var(--color-primary) !important; }
.text-secondary-color  { color: var(--color-text-secondary) !important; }
.mt-4   { margin-top: var(--space-4); }
.mt-8   { margin-top: var(--space-8); }
.mb-4   { margin-bottom: var(--space-4); }
.mb-8   { margin-bottom: var(--space-8); }
.hidden { display: none !important; }

/* ── Animations ───────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(1.2); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in         { animation: fadeIn 0.6s ease forwards; }
.fade-in-delay-1 { animation: fadeIn 0.6s 0.1s ease both; }
.fade-in-delay-2 { animation: fadeIn 0.6s 0.2s ease both; }
.fade-in-delay-3 { animation: fadeIn 0.6s 0.3s ease both; }

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reduce motion ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}