/* ==========================================================================
   VULNRIX EDUCATION — DESIGN SYSTEM & MAIN STYLESHEET
   Brand Philosophy: Don't just teach students how to use technology. Teach them how to create it.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS DESIGN TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Dark Charcoal & Metallic Grays */
  --bg-primary: #0A0A0C;
  --bg-secondary: #121215;
  --bg-elevated: #1C1C21;
  --bg-surface-hover: #24242A;
  
  /* Typography Colors */
  --text-primary: #F5F5F7;
  --text-secondary: #B0B0B8;
  --text-muted: #787882;
  --text-inverse: #0A0A0C;
  
  /* Borders & Outlines */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-silver: rgba(255, 255, 255, 0.28);
  --border-blue: rgba(93, 159, 255, 0.35);
  
  /* Accent Colors */
  --accent-blue: #5D9FFF;
  --accent-blue-glow: rgba(93, 159, 255, 0.22);
  --accent-blue-hover: #7AB0FF;
  
  --white: #FFFFFF;
  --black: #000000;
  
  /* Typography Stack */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Layout Boundaries */
  --max-width: 1280px;
  --max-width-narrow: 880px;
  --nav-height: 76px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   2. GLOBAL RESET & MOUSE TRACKER
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

a, button, input, select, textarea, [role="button"] {
  -webkit-tap-highlight-color: transparent;
}

button:focus,
button:focus-visible,
a:focus,
a:focus-visible,
.mobile-toggle:focus,
.mobile-toggle:focus-visible {
  outline: none !important;
  box-shadow: none !important;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Dynamic Mouse-Tracking Glow Spotlight */
.mouse-tracker-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 600px;
  height: 600px;
  margin-left: -300px;
  margin-top: -300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(93, 159, 255, 0.12) 0%, rgba(255, 255, 255, 0.04) 40%, rgba(10, 10, 12, 0) 70%);
  pointer-events: none;
  z-index: 0;
  filter: blur(50px);
  will-change: transform;
}

/* Dot Grid Pattern */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

main {
  flex: 1 0 auto;
  position: relative;
  z-index: 1;
}

/* Scroll Offset Clearance for Sticky Header */
section, [id] {
  scroll-margin-top: calc(var(--nav-height) + 1.5rem);
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 4.2vw, 3.5rem);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1rem;
}

p.lead {
  font-size: 1.15rem;
  color: var(--text-primary);
  line-height: 1.55;
}

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

a:hover {
  color: var(--accent-blue-hover);
}

:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   3. CONTAINER & GLASSMORPHISM UTILITIES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.container-narrow {
  max-width: var(--max-width-narrow);
}

.section-padding {
  padding-top: clamp(4.5rem, 8vw, 7.5rem);
  padding-bottom: clamp(4.5rem, 8vw, 7.5rem);
}

.section-padding-sm {
  padding-top: clamp(2.5rem, 5vw, 4rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.bg-secondary {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.bg-elevated {
  background-color: var(--bg-elevated);
}

.text-center {
  text-align: center;
}

.text-accent {
  color: var(--accent-blue);
}

.text-muted {
  color: var(--text-muted);
}

/* Ultra Glassmorphism Panel */
.glass-panel {
  background: rgba(20, 20, 24, 0.65);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

/* Tag Pills */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
}

.tag-accent {
  background-color: var(--accent-blue-glow);
  border-color: var(--border-blue);
  color: var(--accent-blue);
}

/* --------------------------------------------------------------------------
   4. NAVIGATION & HEADER
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-normal);
  background-color: rgba(10, 10, 12, 0.75);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header.scrolled {
  background-color: rgba(10, 10, 12, 0.94);
  border-bottom-color: var(--border-medium);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-wordmark .brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.brand-wordmark:hover .brand-icon {
  transform: scale(1.08);
}

.brand-wordmark .wordmark-suffix {
  color: var(--text-primary);
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.4rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: width var(--transition-normal);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-toggle:hover,
.mobile-toggle:active {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--border-silver);
}

/* Mobile Nav Drawer Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(8, 8, 10, 0.98);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 2rem 2.5rem 2rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-20px);
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.5rem;
}

.mobile-nav-close {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-medium);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  color: var(--text-primary);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.mobile-link {
  color: var(--text-secondary);
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: color var(--transition-fast);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.mobile-link:hover,
.mobile-link:active,
.mobile-link.active {
  color: var(--white);
  background: transparent;
}

/* --------------------------------------------------------------------------
   5. BUTTONS & INTERACTIVE CONTROLS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: 1px solid transparent;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--text-inverse);
  border-color: var(--text-primary);
}

.btn-primary:hover {
  background-color: var(--white);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.18);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--border-silver);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--accent-blue);
  color: #000000;
  border-color: var(--accent-blue);
  font-weight: 700;
  box-shadow: 0 4px 20px var(--accent-blue-glow);
}

.btn-accent:hover {
  background-color: var(--accent-blue-hover);
  color: #000000;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(93, 159, 255, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.05);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-catalogue-section {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + 2rem);
  padding-bottom: 3.5rem;
  overflow: hidden;
  background-color: var(--bg-primary);
}

.dot-grid-pattern {
  position: absolute;
  top: 90px;
  left: 60px;
  width: 140px;
  height: 140px;
  background-image: radial-gradient(rgba(255, 255, 255, 0.25) 1.5px, transparent 1.5px);
  background-size: 14px 14px;
  opacity: 0.65;
  pointer-events: none;
}

.hero-grid-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-glass-box {
  background: rgba(22, 22, 26, 0.65);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  padding: clamp(2rem, 4vw, 3.25rem);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  position: relative;
}

.hero-title-group {
  margin-bottom: 1.5rem;
}

.hero-title-the {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 300;
  color: var(--text-primary);
  display: inline;
  margin-right: 0.4rem;
}

.hero-title-future {
  font-size: clamp(3.75rem, 6.5vw, 5.75rem);
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 0.95;
  display: inline;
}

.hero-title-starts {
  font-size: clamp(2.2rem, 4vw, 3.25rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0.25rem;
  letter-spacing: -0.02em;
}

.hero-supporting-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 540px;
  line-height: 1.45;
}

.hero-pills-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
}

.hero-pill-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
}

.hero-btn-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-bubble-frame-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-bubble-frame {
  width: 100%;
  max-width: 520px;
  height: 520px;
  border-radius: 50% 50% 50% 12%;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
  background-color: var(--bg-elevated);
  position: relative;
}

.hero-bubble-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(85%) contrast(110%);
  transition: filter var(--transition-normal), transform var(--transition-slow);
}

.hero-bubble-frame:hover img {
  filter: grayscale(20%) contrast(105%);
  transform: scale(1.04);
}

.hero-presentation-badge {
  position: absolute;
  bottom: -40px;
  left: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-presentation-badge strong {
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   7. CARDS & GRID COMPONENTS (GENEROUS RESPONSIVE SPACING)
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 2rem;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 2rem;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.card {
  background: rgba(24, 24, 28, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-silver);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 255, 255, 0.05);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.28;
}

.card-body {
  flex: 1 1 auto;
}

.card-footer {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --------------------------------------------------------------------------
   8. FEATURE & CONTENT SECTIONS
   -------------------------------------------------------------------------- */
.section-header {
  margin-bottom: 3.5rem;
}

.section-header.text-center {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(1.85rem, 3.2vw, 2.6rem);
  margin-bottom: 0.85rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Philosophy Banner (Light Theme Edition) */
.philosophy-banner-light {
  background: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-xl);
  padding: clamp(2.5rem, 5.5vw, 4.5rem);
  position: relative;
  overflow: hidden;
  text-align: center;
  box-shadow: 0 24px 70px rgba(255, 255, 255, 0.08), 0 12px 35px rgba(0, 0, 0, 0.5);
  color: #0A0A0C;
}

.philosophy-quote-light {
  font-size: clamp(1.4rem, 2.8vw, 2.25rem);
  font-weight: 800;
  color: #0A0A0C;
  line-height: 1.35;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.philosophy-brand-light {
  font-size: 1.1rem;
  font-weight: 800;
  font-style: italic;
  color: #0A0A0C;
  letter-spacing: 0.04em;
}

/* Timeline Process Component */
.timeline-process {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.timeline-step {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 2rem;
  align-items: flex-start;
  background: rgba(20, 20, 24, 0.75);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition-normal);
}

.timeline-step:hover {
  border-color: var(--border-silver);
}

.timeline-number {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-blue);
  background-color: var(--accent-blue-glow);
  border: 1px solid var(--border-blue);
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   9. FORMS & INPUTS
   -------------------------------------------------------------------------- */
.form-card {
  background: rgba(20, 20, 24, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 4vw, 3.5rem);
}

.form-group {
  margin-bottom: 1.35rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.45rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.1rem;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px var(--accent-blue-glow);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23B0B0B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--accent-blue);
}

/* Alert Messages */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.alert-success {
  background-color: rgba(46, 204, 113, 0.12);
  border: 1px solid rgba(46, 204, 113, 0.4);
  color: #2ECC71;
}

.alert-error {
  background-color: rgba(231, 76, 60, 0.12);
  border: 1px solid rgba(231, 76, 60, 0.4);
  color: #E74C3C;
}

/* --------------------------------------------------------------------------
   10. FAQ ACCORDION
   -------------------------------------------------------------------------- */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.faq-item {
  background: rgba(20, 20, 24, 0.75);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-silver);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.35rem;
  text-align: left;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
  color: var(--accent-blue);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
  padding: 0 1.35rem;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.35rem 1.35rem 1.35rem;
}

/* --------------------------------------------------------------------------
   11. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #060608;
  border-top: 1px solid var(--border-medium);
  padding-top: 4.5rem;
  padding-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 1.15rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   12. MOBILE RESPONSIVENESS & BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid-layout {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .hero-bubble-frame {
    max-width: 440px;
    height: 440px;
  }

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

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-actions .btn {
    display: none; /* Hide header CTA on mobile to avoid text wrapping & header cramming */
  }
}

@media (max-width: 640px) {
  .brand-wordmark {
    font-size: 1.1rem;
    gap: 0.4rem;
  }

  .brand-wordmark .brand-icon {
    width: 24px;
    height: 24px;
  }
  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .card-grid-3,
  .card-grid-2,
  .card-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .timeline-step {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .timeline-number {
    width: 50px;
    height: 50px;
    font-size: 1.35rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .hero-glass-box {
    padding: 1.75rem;
  }

  .hero-bubble-frame {
    max-width: 320px;
    height: 320px;
  }

  .hero-btn-row {
    flex-direction: column;
    width: 100%;
  }

  .hero-btn-row .btn {
    width: 100%;
  }
}