/* =========================================
   Fusify.ai | Brandbook Styles
   ========================================= */

:root {
  /* Brand colors */
  --color-bg: #0a0a0f;
  --color-bg-alt: #111118;
  --color-surface: #1a1a24;
  --color-surface-2: #20202c;
  --color-border: #2a2a3a;
  --color-border-strong: #3a3a4d;
  --color-text: #e4e4ed;
  --color-text-muted: #9494a8;
  --color-text-subtle: #6b6b80;
  --color-accent: #6c5ce7;
  --color-accent-light: #a29bfe;
  --color-accent-dark: #4a3fc7;
  --color-accent-glow: rgba(108, 92, 231, 0.25);
  --color-white: #ffffff;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #38bdf8;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: var(--color-accent-light); }
a:hover { color: var(--color-white); }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }

/* Layout */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

/* =========================================
   Topbar
   ========================================= */
.bb-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.bb-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  max-width: 1180px;
  margin: 0 auto;
}

.bb-topbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--color-white);
}

.bb-topbar-brand img { height: 28px; }

.bb-topbar-meta {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  letter-spacing: 0.5px;
}

.bb-topbar-back {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.bb-topbar-back:hover {
  border-color: var(--color-accent);
  color: var(--color-white);
}

/* =========================================
   Hero
   ========================================= */
.bb-hero {
  padding: 120px 0 80px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, var(--color-accent-glow) 0%, transparent 60%);
  border-bottom: 1px solid var(--color-border);
}

.bb-hero-logo {
  margin: 0 auto 40px;
  width: 280px;
}

.bb-hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 20px;
}

.bb-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-white);
  max-width: 760px;
  margin: 0 auto 24px;
  letter-spacing: -1px;
}

.bb-hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
}

.bb-hero-version {
  margin-top: 32px;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
}

/* =========================================
   Table of Contents
   ========================================= */
.bb-toc {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}

.bb-toc-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.bb-toc-list a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 10px;
}

.bb-toc-list a:hover {
  border-color: var(--color-accent);
  color: var(--color-white);
}

.bb-toc-list a span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent-light);
}

/* =========================================
   Sections
   ========================================= */
.bb-section {
  padding: 96px 0;
  border-bottom: 1px solid var(--color-border);
}

.bb-section:nth-child(odd) {
  background: var(--color-bg-alt);
}

.bb-section-header {
  margin-bottom: 56px;
  max-width: 760px;
}

.bb-section-number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent-light);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.bb-section h2 {
  font-size: clamp(1.875rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.bb-section-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.bb-h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  margin: 48px 0 16px;
}

.bb-h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin: 24px 0 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.bb-text {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  max-width: 720px;
}

/* =========================================
   Pillars (essentie / persoonlijkheid)
   ========================================= */
.bb-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.bb-pillar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition);
}

.bb-pillar:hover { border-color: var(--color-accent); }

.bb-pillar-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}

.bb-pillar h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}

.bb-pillar p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Quote block */
.bb-quote {
  margin: 32px 0;
  padding: 32px;
  background: rgba(108, 92, 231, 0.08);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-white);
  line-height: 1.5;
  font-style: italic;
}

/* =========================================
   Logo Section
   ========================================= */
.bb-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.bb-logo-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.bb-logo-card.alt-bg .bb-logo-stage {
  background: var(--color-white);
}

.bb-logo-stage {
  background: var(--color-bg);
  padding: 48px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  border-bottom: 1px solid var(--color-border);
}

.bb-logo-stage img,
.bb-logo-stage svg {
  max-height: 80px;
  width: auto;
}

.bb-logo-meta {
  padding: 16px 20px;
}

.bb-logo-meta-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
}

.bb-logo-meta-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.bb-logo-download {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-accent-light);
}

/* Misuse */
.bb-misuse {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.bb-misuse-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.bb-misuse-stage {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.bb-misuse-cross {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-error);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.bb-misuse-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Clearspace diagram */
.bb-clearspace {
  background: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 24px;
}

.bb-clearspace-inner {
  position: relative;
  padding: 32px;
  border: 1px dashed var(--color-accent);
}

.bb-clearspace-inner::before,
.bb-clearspace-inner::after {
  content: 'X';
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent-light);
}

.bb-clearspace-inner::before { top: -8px; left: -8px; }
.bb-clearspace-inner::after { bottom: -8px; right: -8px; }

/* =========================================
   Color Palette
   ========================================= */
.bb-color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.bb-color {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.bb-color-swatch {
  height: 140px;
  width: 100%;
  position: relative;
}

.bb-color-swatch.has-text {
  display: flex;
  align-items: flex-end;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.bb-color-meta {
  padding: 16px 18px;
}

.bb-color-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 4px;
}

.bb-color-tokens {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.bb-color-tokens span { display: block; }

/* Gradient swatch */
.bb-gradient {
  height: 180px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  margin-top: 24px;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: white;
  font-weight: 600;
}

/* =========================================
   Typography Section
   ========================================= */
.bb-type-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: baseline;
}

.bb-type-row:last-child { border-bottom: none; }

.bb-type-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.bb-type-meta strong {
  color: var(--color-white);
  font-family: var(--font-main);
  font-size: 0.95rem;
  display: block;
  margin-bottom: 4px;
  font-weight: 700;
}

.bb-type-sample { color: var(--color-white); line-height: 1.2; }

.bb-type-sample.t-display  { font-size: 4rem; font-weight: 800; letter-spacing: -1.5px; }
.bb-type-sample.t-h1       { font-size: 3rem; font-weight: 800; letter-spacing: -1px; }
.bb-type-sample.t-h2       { font-size: 2.25rem; font-weight: 800; letter-spacing: -0.5px; }
.bb-type-sample.t-h3       { font-size: 1.5rem; font-weight: 700; }
.bb-type-sample.t-lead     { font-size: 1.25rem; font-weight: 500; color: var(--color-text); }
.bb-type-sample.t-body     { font-size: 1rem; font-weight: 400; color: var(--color-text); line-height: 1.65; }
.bb-type-sample.t-small    { font-size: 0.875rem; color: var(--color-text-muted); }
.bb-type-sample.t-mono     { font-family: var(--font-mono); font-size: 0.95rem; color: var(--color-accent-light); }

/* =========================================
   Tone of Voice | Do / Don't
   ========================================= */
.bb-do-dont {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

.bb-do, .bb-dont {
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--color-border);
}

.bb-do {
  background: rgba(34, 197, 94, 0.06);
  border-color: rgba(34, 197, 94, 0.25);
}

.bb-dont {
  background: rgba(239, 68, 68, 0.06);
  border-color: rgba(239, 68, 68, 0.25);
}

.bb-dd-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.bb-do .bb-dd-label { color: var(--color-success); }
.bb-dont .bb-dd-label { color: var(--color-error); }

.bb-do ul, .bb-dont ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bb-do li, .bb-dont li {
  font-size: 0.95rem;
  color: var(--color-text);
  padding-left: 22px;
  position: relative;
  line-height: 1.5;
}

.bb-do li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

.bb-dont li::before {
  content: '✕';
  position: absolute;
  left: 0;
  color: var(--color-error);
  font-weight: 700;
}

/* Voice principles */
.bb-principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.bb-principle {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.bb-principle-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent-light);
  margin-bottom: 12px;
}

.bb-principle h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.bb-principle p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* =========================================
   UI Components Showcase
   ========================================= */
.bb-ui-stage {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  margin-top: 24px;
}

.bb-ui-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 32px;
}

.bb-ui-row:last-child { margin-bottom: 0; }

.bb-ui-label {
  width: 140px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Shared button styles */
.btn {
  display: inline-block;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 1rem;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 24px var(--color-accent-glow);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent-light);
  color: var(--color-accent-light);
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent-light);
  padding: 12px 16px;
}

.bb-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
}

.bb-badge.b-primary {
  color: var(--color-accent-light);
  background: rgba(108, 92, 231, 0.12);
  border: 1px solid rgba(108, 92, 231, 0.25);
}

.bb-badge.b-success {
  color: var(--color-success);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.bb-badge.b-warning {
  color: var(--color-warning);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.bb-input {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 0.95rem;
  width: 280px;
  transition: border-color var(--transition);
}

.bb-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.bb-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  width: 280px;
}

.bb-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.bb-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Iconography */
.bb-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.bb-icon {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: border-color var(--transition);
}

.bb-icon:hover { border-color: var(--color-accent); }

.bb-icon svg {
  width: 32px;
  height: 32px;
  margin: 0 auto 12px;
  color: var(--color-accent-light);
}

.bb-icon-name {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

/* Vocab table */
.bb-vocab {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  font-size: 0.95rem;
}

.bb-vocab th {
  text-align: left;
  padding: 14px 16px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.bb-vocab td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.bb-vocab tr:hover td {
  background: var(--color-surface);
}

.bb-vocab .v-yes { color: var(--color-success); font-weight: 600; }
.bb-vocab .v-no { color: var(--color-error); font-weight: 600; text-decoration: line-through; }

/* Application examples */
.bb-app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.bb-app {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.bb-app-stage {
  padding: 36px 28px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.bb-app-stage.s-dark {
  background: var(--color-bg);
}

.bb-app-stage.s-gradient {
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  color: white;
}

.bb-app-stage.s-light {
  background: var(--color-white);
  color: #0a0a0f;
}

.bb-app-stage.s-light .bb-app-title { color: #0a0a0f; }
.bb-app-stage.s-light .bb-app-sub { color: #6b6b80; }

.bb-app-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
  line-height: 1.2;
}

.bb-app-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.bb-app-meta {
  padding: 14px 20px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

/* Footer */
.bb-footer {
  padding: 48px 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--color-border);
}

.bb-footer a { color: var(--color-accent-light); }

/* Responsive */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .bb-section { padding: 64px 0; }
  .bb-hero { padding: 80px 0 60px; }
  .bb-type-row { grid-template-columns: 1fr; gap: 12px; }
  .bb-do-dont { grid-template-columns: 1fr; }
  .bb-type-sample.t-display { font-size: 2.5rem; }
  .bb-type-sample.t-h1 { font-size: 2rem; }
  .bb-type-sample.t-h2 { font-size: 1.75rem; }
  .bb-topbar-meta { display: none; }
}