/* ==========================================================================
   BLUEPRINT-BUILD (B&B) — MODERN LIGHT-FIRST DESIGN SYSTEM (v2.0)
   Designed for Clarity, Speed, Mobile-First Accessibility, and High Conversion.
   ========================================================================== */

:root {
  /* Color Palette */
  --c-primary: #1d4ed8;       /* Precision Deep Cobalt */
  --c-primary-hover: #1e40af;
  --c-primary-light: #eff6ff;
  
  --c-accent: #0f766e;        /* Practical Deep Teal (Build Engine) */
  --c-accent-hover: #115e59;
  --c-accent-light: #f0fdfa;
  
  --c-dark: #0f172a;          /* Slate 900 for crisp text */
  --c-heading: #1e293b;       /* Slate 800 */
  --c-body: #334155;          /* Slate 700 */
  --c-muted: #64748b;         /* Slate 500 */
  
  --bg-page: #ffffff;
  --bg-subtle: #f8fafc;       /* Slate 50 */
  --bg-card: #ffffff;
  --bg-border: #e2e8f0;       /* Slate 200 */
  --bg-border-focus: #cbd5e1;
  
  --c-success: #059669;
  --c-success-light: #ecfdf5;
  --c-warning: #d97706;
  --c-warning-light: #fffbeb;
  
  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Radius & Shadows */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  
  /* Dynamic Notch Capsule Tokens */
  --bg-notch: rgba(255, 255, 255, 0.92);
  --border-notch: rgba(226, 232, 240, 0.9);
  --shadow-notch: 0 12px 32px -4px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;
}

[data-theme="dark"] {
  --c-dark: #f8fafc;
  --c-heading: #f1f5f9;
  --c-body: #94a3b8;
  --c-muted: #64748b;

  --bg-page: #0b0f19;
  --bg-subtle: #111827;
  --bg-card: #131d33;
  --bg-border: #1e293b;
  --bg-border-focus: #334155;

  --bg-notch: rgba(15, 23, 42, 0.92);
  --border-notch: rgba(51, 65, 85, 0.7);
  --shadow-notch: 0 16px 40px -4px rgba(0, 0, 0, 0.7), 0 4px 14px -2px rgba(0, 0, 0, 0.4);

  --c-primary-light: rgba(29, 78, 216, 0.2);
  --c-accent-light: rgba(15, 118, 110, 0.2);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .bb-footer {
  background-color: #0b0f19;
  border-top-color: #1e293b;
}

[data-theme="dark"] .bb-calc-results {
  background: #0f172a;
}

[data-theme="dark"] .bb-calc-input {
  background: #0f172a;
  color: #f8fafc;
}

[data-theme="dark"] .bb-tool-bridge {
  background: #111d38;
  border-color: #1e3a6e;
}

[data-theme="dark"] .bb-tool-bridge-content h3 {
  color: #f8fafc;
}

[data-theme="dark"] .bb-tool-bridge-content p {
  color: #cbd5e1;
}

[data-theme="dark"] .bb-footer-principle {
  background: #131d33;
  border-color: #1e293b;
}

[data-theme="dark"] .notch-cta-btn {
  background: var(--c-primary);
  color: #ffffff;
}

[data-theme="dark"] .lang-btn.active {
  background: var(--c-primary);
  color: #ffffff;
}

[data-theme="dark"] .bb-desk-pill {
  background: #1e293b;
  border: 1px solid #334155;
}

[data-theme="dark"] .bb-modal-content {
  background: #131d33;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--c-body);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

.bb-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ==========================================================================
   DYNAMIC NOTCH HEADER (iOS Floating Capsule — Merged UI)
   ========================================================================== */
.notch-wrapper {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 9999;
  display: flex;
  justify-content: center;
  padding: 0 16px;
  pointer-events: none;
}

.dynamic-notch {
  pointer-events: auto;
  width: 100%;
  max-width: 1200px;
  background: var(--bg-notch);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1.5px solid var(--border-notch);
  box-shadow: var(--shadow-notch);
  border-radius: 9999px;
  padding: 7px 12px;
  transition: border-radius 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, background-color 0.2s ease;
}

.dynamic-notch.is-open {
  border-radius: 28px;
}

.notch-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
}

/* 1. Merged Brand Pill */
.notch-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--c-dark);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  transition: opacity 0.15s ease;
}

.notch-logo:hover {
  opacity: 0.9;
}

.notch-logo-badge {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-primary) 0%, #1e40af 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Comfortaa', var(--font-sans);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: -0.5px;
  box-shadow: 0 2px 8px rgba(29, 78, 216, 0.3);
  flex-shrink: 0;
}

.notch-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  font-weight: 800;
  font-size: 0.9375rem;
  letter-spacing: -0.02em;
}

.notch-logo-sub {
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 2. Merged Navigation Pill Track */
.notch-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-subtle);
  padding: 4px 6px;
  border-radius: 9999px;
  border: 1px solid var(--bg-border);
}

.notch-nav-link {
  text-decoration: none;
  color: var(--c-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.notch-nav-link:hover {
  color: var(--c-primary);
  background-color: var(--bg-card);
}

.notch-nav-link.active {
  background-color: var(--c-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(29, 78, 216, 0.25);
}

/* Dropdown */
.notch-dropdown-wrapper {
  position: relative;
}

.notch-dropdown-btn {
  background: none;
  border: none;
  cursor: pointer;
}

.notch-caret {
  transition: transform 0.2s ease;
}

.notch-dropdown-wrapper:hover .notch-caret,
.notch-dropdown-wrapper.is-open .notch-caret {
  transform: rotate(180deg);
}

.notch-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 280px;
  background: var(--bg-card);
  border: 1.5px solid var(--bg-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem;
  display: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 10000;
}

.notch-dropdown-wrapper:hover .notch-dropdown-menu,
.notch-dropdown-wrapper.is-open .notch-dropdown-menu {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.notch-dropdown-header {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 700;
  color: var(--c-muted);
  padding: 0.375rem 0.625rem;
  margin-bottom: 0.25rem;
  border-bottom: 1px solid var(--bg-border);
}

.notch-dropdown-grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.notch-dropdown-link {
  display: block;
  padding: 0.5rem 0.625rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--c-dark);
  text-decoration: none;
  transition: background-color 0.15s, color 0.15s;
}

.notch-dropdown-link:hover {
  background-color: var(--c-primary-light);
  color: var(--c-primary);
}

/* 3. Merged Controls Capsule */
.notch-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Segmented Language Switcher */
.segmented-lang {
  display: inline-flex;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  border-radius: 9999px;
  padding: 2px;
}

.lang-btn {
  background: none;
  border: none;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 9999px;
  cursor: pointer;
  color: var(--c-muted);
  transition: all 0.15s ease;
  line-height: 1;
}

.lang-btn.active {
  background: var(--c-dark);
  color: #ffffff;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 36px;
  height: 36px;
  border-radius: 9999px;
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--c-dark);
  transition: transform 0.2s ease, background-color 0.15s;
  padding: 0;
}

.theme-toggle-btn:hover {
  transform: rotate(15deg) scale(1.05);
  background: var(--bg-card);
}

/* CTA Pill */
.notch-cta-btn {
  background: var(--c-dark);
  color: #ffffff;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 9999px;
  text-decoration: none;
  transition: transform 0.15s, opacity 0.15s;
  white-space: nowrap;
}

.notch-cta-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

/* Mobile Hamburger Button */
.mobile-hamburger-btn {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 9999px;
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  cursor: pointer;
  padding: 9px;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}

.hamburger-bar {
  width: 18px;
  height: 2px;
  background-color: var(--c-dark);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.mobile-hamburger-btn.active .hamburger-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.mobile-hamburger-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}
.mobile-hamburger-btn.active .hamburger-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 4. Expandable Mobile/Tablet Drawer Inside Notch */
.notch-mobile-drawer {
  display: none;
  flex-direction: column;
  gap: 12px;
  padding-top: 14px;
  margin-top: 10px;
  border-top: 1px solid var(--bg-border);
  max-height: 80vh;
  max-height: 80dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.dynamic-notch.is-open .notch-mobile-drawer {
  display: flex;
  animation: notchExpand 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes notchExpand {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.notch-drawer-section-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--c-muted);
}

.notch-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.notch-drawer-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--c-dark);
  transition: background-color 0.15s;
}

.notch-drawer-link:hover {
  background-color: var(--bg-card);
}

.notch-drawer-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.notch-drawer-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--c-muted);
  font-weight: 400;
  margin-top: 1px;
}

.notch-drawer-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.notch-drawer-cat-pill {
  font-size: 0.75rem;
  padding: 5px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  color: var(--c-dark);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.15s, color 0.15s;
}

.notch-drawer-cat-pill:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
}

.notch-drawer-footer {
  margin-top: 8px;
  padding-top: 10px;
}

/* Page Clearance for Floating Notch */
.bb-main-content {
  padding-top: 86px;
}

/* ==========================================================================
   BUTTONS & CONTROLS
   ========================================================================== */
.bb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  min-height: 44px;
}

.bb-btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  min-height: 38px;
}

.bb-btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1.0625rem;
  min-height: 48px;
}

.bb-btn-block {
  width: 100%;
}

.bb-btn-primary {
  background-color: var(--c-primary);
  color: #ffffff;
}

.bb-btn-primary:hover {
  background-color: var(--c-primary-hover);
}

.bb-btn-accent {
  background-color: var(--c-accent);
  color: #ffffff;
}

.bb-btn-accent:hover {
  background-color: var(--c-accent-hover);
}

.bb-btn-outline {
  background-color: transparent;
  border-color: var(--bg-border);
  color: var(--c-dark);
}

.bb-btn-outline:hover {
  background-color: var(--bg-subtle);
  border-color: var(--c-muted);
}

.bb-btn-secondary {
  background-color: var(--bg-subtle);
  border-color: var(--bg-border);
  color: var(--c-dark);
}

.bb-btn-secondary:hover {
  background-color: #e2e8f0;
}

/* ==========================================================================
   SECTION COMMON STYLES
   ========================================================================== */
.bb-section {
  padding: 4.5rem 0;
}

.bb-section-subtle {
  background-color: var(--bg-subtle);
}

.bb-section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem auto;
}

.bb-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--c-primary);
  background: var(--c-primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.bb-section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--c-dark);
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.bb-section-desc {
  font-size: 1.125rem;
  color: var(--c-muted);
  line-height: 1.6;
}

/* ==========================================================================
   HOMEPAGE HERO SECTION
   ========================================================================== */
.bb-hero {
  padding: 4.5rem 0 3.5rem 0;
  background: radial-gradient(circle at 50% 0%, #f0f7ff 0%, #ffffff 70%);
  border-bottom: 1px solid var(--bg-border);
}

.bb-hero-content {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.bb-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--c-primary);
  background: #ffffff;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid #bfdbfe;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.bb-hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--c-dark);
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.bb-hero-title span.highlight {
  color: var(--c-primary);
  position: relative;
}

.bb-hero-subtitle {
  font-size: 1.25rem;
  color: var(--c-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.bb-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.bb-hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--c-muted);
  font-weight: 500;
}

.bb-hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bb-hero-meta-icon {
  color: var(--c-success);
}

/* ==========================================================================
   THE CORE MODEL (BLUEPRINT VS BUILD)
   ========================================================================== */
.bb-model-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1040px;
  margin: 0 auto;
}

.bb-model-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.bb-model-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.bb-model-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.bb-model-tag.blueprint {
  background: var(--c-primary-light);
  color: var(--c-primary);
}

.bb-model-tag.build {
  background: var(--c-accent-light);
  color: var(--c-accent);
}

.bb-model-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--c-dark);
  margin-bottom: 0.75rem;
}

.bb-model-desc {
  font-size: 1rem;
  color: var(--c-body);
  margin-bottom: 1.5rem;
}

.bb-model-list {
  list-style: none;
  margin-bottom: 2rem;
}

.bb-model-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
  color: var(--c-body);
}

.bb-model-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: bold;
}

.bb-model-card.blueprint .bb-model-list li::before {
  color: var(--c-primary);
}

.bb-model-card.build .bb-model-list li::before {
  color: var(--c-accent);
}

/* ==========================================================================
   PROBLEM DISCOVERY GRID
   ========================================================================== */
.bb-problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.bb-problem-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.bb-problem-card:hover {
  border-color: var(--c-primary);
  box-shadow: var(--shadow-md);
}

.bb-problem-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.bb-problem-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.bb-problem-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-dark);
}

.bb-problem-desc {
  font-size: 0.875rem;
  color: var(--c-muted);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.bb-problem-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* ==========================================================================
   FEATURED FLAGSHIP BLUEPRINT SHOWCASE
   ========================================================================== */
.bb-flagship-card {
  background: #ffffff;
  border: 2px solid #bfdbfe;
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
  max-width: 1040px;
  margin: 0 auto;
  position: relative;
}

.bb-flagship-badge {
  position: absolute;
  top: -14px;
  left: 3rem;
  background: var(--c-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
}

.bb-flagship-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.bb-flagship-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--c-dark);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.bb-flagship-problem-box {
  background: var(--bg-subtle);
  border-left: 4px solid var(--c-primary);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1.5rem;
}

.bb-flagship-problem-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 0.25rem;
}

.bb-flagship-problem-text {
  font-size: 0.9375rem;
  color: var(--c-dark);
  font-weight: 500;
}

.bb-flagship-deliverables {
  list-style: none;
  margin-bottom: 2rem;
}

.bb-flagship-deliverables li {
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9375rem;
  color: var(--c-body);
  margin-bottom: 0.5rem;
}

.bb-flagship-deliverables li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--c-success);
  font-weight: bold;
}

/* Pricing box */
.bb-flagship-sidebar {
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.bb-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.bb-price-current {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--c-dark);
}

.bb-price-original {
  font-size: 1.25rem;
  color: var(--c-muted);
  text-decoration: line-through;
}

.bb-price-caption {
  font-size: 0.8125rem;
  color: var(--c-muted);
  margin-bottom: 1.5rem;
}

.bb-flagship-guarantee {
  font-size: 0.8125rem;
  color: var(--c-muted);
  margin-top: 1rem;
}

/* ==========================================================================
   TRANSFORMATION JOURNEY (Problem -> Solution)
   ========================================================================== */
.bb-journey-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

.bb-journey-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  position: relative;
}

.bb-journey-step {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--c-dark);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem auto;
}

.bb-journey-card:nth-child(2) .bb-journey-step {
  background: var(--c-primary);
}

.bb-journey-card:nth-child(3) .bb-journey-step {
  background: var(--c-accent);
}

.bb-journey-card:nth-child(4) .bb-journey-step {
  background: var(--c-success);
}

.bb-journey-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 0.5rem;
}

.bb-journey-desc {
  font-size: 0.875rem;
  color: var(--c-muted);
}

/* ==========================================================================
   BUILD SERVICES GRID
   ========================================================================== */
.bb-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.bb-service-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.bb-service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.bb-service-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--c-accent-light);
  color: var(--c-accent);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.bb-service-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--c-dark);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.bb-service-desc {
  font-size: 0.9375rem;
  color: var(--c-body);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.bb-service-deliverables {
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.bb-service-deliverables-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}

.bb-service-deliverables-list {
  list-style: none;
  font-size: 0.875rem;
  color: var(--c-body);
}

.bb-service-deliverables-list li {
  margin-bottom: 0.375rem;
}

.bb-service-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--bg-border);
}

.bb-service-pricing {
  font-size: 0.875rem;
  color: var(--c-muted);
}

.bb-service-pricing strong {
  display: block;
  font-size: 1.125rem;
  color: var(--c-dark);
}

/* ==========================================================================
   FREE TOOLS & CALCULATORS SECTION
   ========================================================================== */
.bb-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.bb-tool-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.bb-tool-card:hover {
  border-color: var(--c-primary);
  box-shadow: var(--shadow-md);
}

.bb-tool-type-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--c-primary);
  background: var(--c-primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.bb-tool-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 0.5rem;
}

.bb-tool-desc {
  font-size: 0.9375rem;
  color: var(--c-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.bb-tool-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--bg-border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-primary);
}

/* ==========================================================================
   CALCULATOR INTERACTIVE INTERFACE
   ========================================================================== */
.bb-calc-wrapper {
  background: #ffffff;
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.bb-calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.bb-calc-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.bb-calc-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-dark);
}

.bb-calc-help {
  font-size: 0.75rem;
  color: var(--c-muted);
}

.bb-calc-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--c-dark);
  background: var(--bg-subtle);
  transition: border-color 0.15s, background-color 0.15s;
}

.bb-calc-input:focus {
  outline: none;
  border-color: var(--c-primary);
  background: #ffffff;
}

.bb-calc-results {
  background: var(--bg-subtle);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.bb-calc-metric {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--bg-border);
}

.bb-calc-metric:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.bb-calc-metric-title {
  font-size: 0.8125rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--c-muted);
  margin-bottom: 0.25rem;
}

.bb-calc-metric-val {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--c-dark);
  line-height: 1.2;
}

.bb-calc-metric-val.highlight {
  color: var(--c-primary);
}

.bb-calc-metric-val.success {
  color: var(--c-success);
}

/* Bridge CTA inside tool */
.bb-tool-bridge {
  background: #f0f7ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.bb-tool-bridge-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 0.25rem;
}

.bb-tool-bridge-content p {
  font-size: 0.9375rem;
  color: var(--c-body);
}

/* ==========================================================================
   CONVERSION CLOSING CTA
   ========================================================================== */
.bb-cta-box {
  background: var(--c-dark);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.bb-cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 1rem;
}

.bb-cta-desc {
  font-size: 1.125rem;
  color: #94a3b8;
  max-width: 640px;
  margin: 0 auto 2.5rem auto;
}

.bb-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   FORMS & INQUIRY SYSTEM
   ========================================================================== */
.bb-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.bb-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.bb-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.bb-form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-dark);
}

.bb-form-input, .bb-form-select, .bb-form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--c-dark);
  background: var(--bg-page);
  transition: border-color 0.15s;
}

.bb-form-input:focus, .bb-form-select:focus, .bb-form-textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}

.bb-form-textarea {
  min-height: 120px;
  resize: vertical;
}

.bb-form-alert {
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
}

.bb-form-alert.success {
  background: var(--c-success-light);
  color: var(--c-success);
  border: 1px solid #a7f3d0;
}

.bb-form-alert.error {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

/* ==========================================================================
   FOOTER STYLES
   ========================================================================== */
.bb-footer {
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--bg-border);
  padding: 4.5rem 0 2rem 0;
}

.bb-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.bb-footer-desc {
  font-size: 0.9375rem;
  color: var(--c-muted);
  margin: 1rem 0 1.25rem 0;
  line-height: 1.6;
}

.bb-footer-principle {
  background: #ffffff;
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  font-size: 0.8125rem;
  color: var(--c-body);
  line-height: 1.5;
}

.bb-footer-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--c-dark);
  margin-bottom: 1.25rem;
}

.bb-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.bb-footer-links a {
  font-size: 0.875rem;
  color: var(--c-muted);
  transition: color 0.15s;
}

.bb-footer-links a:hover {
  color: var(--c-primary);
}

.bb-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--bg-border);
  flex-wrap: wrap;
  gap: 1rem;
}

.bb-footer-copy {
  font-size: 0.8125rem;
  color: var(--c-muted);
}

.bb-footer-badges {
  display: flex;
  gap: 0.75rem;
}

.bb-badge-trust {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--c-muted);
  background: #ffffff;
  border: 1px solid var(--bg-border);
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   FLOATING DESK ISLAND
   ========================================================================== */
.bb-floating-desk {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
}

.bb-desk-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--c-dark);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 600;
  transition: transform 0.2s, background-color 0.2s;
}

.bb-desk-pill:hover {
  transform: translateY(-2px);
  background-color: #1e293b;
}

.bb-desk-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: #22c55e;
}

/* ==========================================================================
   GRID UTILITIES (RESPONSIVE ARCHITECTURE)
   ========================================================================== */
.bb-detail-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 3.5rem;
  align-items: start;
}

.bb-detail-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.bb-checkout-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: start;
}

.bb-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

/* Modal Overlay & Card (iOS Safari Friendly) */
.bb-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  height: 100dvh;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.bb-modal-content {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  max-height: 85dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 2rem;
  position: relative;
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   MOBILE & TABLET RESPONSIVE SYSTEM (IPHONE & IPAD OPTIMIZED)
   ========================================================================== */

/* Universal iOS Form Fix: Prevent automatic Safari zoom on tap */
@media (max-width: 992px) {
  input, select, textarea,
  .bb-form-input, .bb-form-select, .bb-form-textarea, .bb-calc-input {
    font-size: 16px !important;
  }
}

/* Tablet Landscape & Small Laptops (max-width: 1024px) */
@media (max-width: 1024px) {
  .bb-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .bb-detail-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .bb-detail-sidebar {
    position: static;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
  }

  .bb-checkout-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .bb-flagship-card {
    padding: 2.5rem;
  }
}

/* Tablet Portrait & Large Phones (max-width: 992px) */
@media (max-width: 992px) {
  :root {
    --header-height: 68px;
  }

  .notch-nav {
    display: none;
  }
  
  .mobile-hamburger-btn {
    display: flex;
  }
  
  .bb-hide-mobile {
    display: none;
  }
  
  .bb-hero-title {
    font-size: 2.5rem;
    letter-spacing: -1px;
  }

  .bb-hero-subtitle {
    font-size: 1.125rem;
  }
  
  .bb-model-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .bb-model-card {
    padding: 2rem;
  }
  
  .bb-flagship-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .bb-calc-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }
  
  .bb-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  
  .bb-journey-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .bb-services-grid {
    grid-template-columns: 1fr;
  }

  .bb-tools-grid {
    grid-template-columns: 1fr;
  }
}

/* Standard Mobile & iPhones (max-width: 768px) */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .bb-section {
    padding: 3.5rem 0;
  }

  .bb-section-title {
    font-size: 1.875rem;
    line-height: 1.25;
  }

  .bb-contact-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .bb-hero {
    padding: 3rem 0 2.5rem 0;
  }

  .bb-hero-title {
    font-size: 2.125rem;
    letter-spacing: -0.75px;
  }

  .bb-hero-meta {
    gap: 1rem;
    justify-content: flex-start;
  }

  .bb-hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .bb-hero-actions .bb-btn {
    width: 100%;
  }

  .bb-problems-grid {
    grid-template-columns: 1fr;
  }

  .bb-journey-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .bb-flagship-card {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
  }

  .bb-flagship-badge {
    left: 1.5rem;
    font-size: 0.6875rem;
    padding: 3px 10px;
  }

  .bb-flagship-title {
    font-size: 1.75rem;
  }

  .bb-flagship-sidebar {
    padding: 1.5rem;
  }

  .bb-calc-wrapper {
    padding: 1.25rem;
    border-radius: var(--radius-lg);
  }

  .bb-calc-results {
    padding: 1.25rem;
  }

  .bb-calc-metric-val {
    font-size: 1.875rem;
  }

  .bb-tool-bridge {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
  }

  .bb-tool-bridge .bb-btn {
    width: 100%;
  }

  .bb-cta-box {
    padding: 3rem 1.25rem;
    border-radius: var(--radius-lg);
  }

  .bb-cta-title {
    font-size: 1.875rem;
  }

  .bb-cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .bb-cta-actions .bb-btn {
    width: 100%;
  }

  .bb-footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .bb-floating-desk {
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    right: calc(1rem + env(safe-area-inset-right, 0px));
  }

  .bb-desk-pill {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }

  .notch-mobile-drawer {
    padding-bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
  }
}

/* Compact iPhones & Small Screens (max-width: 480px) */
@media (max-width: 480px) {
  .notch-logo-text {
    display: none;
  }

  .bb-container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .bb-hero-title {
    font-size: 1.875rem;
  }

  .bb-hero-subtitle {
    font-size: 1rem;
  }

  .bb-section-title {
    font-size: 1.625rem;
  }

  .bb-section-desc {
    font-size: 0.9375rem;
  }

  .bb-service-title {
    font-size: 1.25rem;
  }

  .bb-btn {
    font-size: 0.875rem;
    padding: 0.625rem 1rem;
  }

  .bb-price-current {
    font-size: 2.25rem;
  }
}