/* Import premium typography from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Montserrat:wght@700;800;900&display=swap');

/* CSS Variables & Design System */
:root {
  /* Color Palette - Premium Dark & Executive Gold/Sky */
  --bg-base: #07080b;
  --bg-surface: #101218;
  --bg-surface-hover: #181c25;
  --bg-surface-alt: #161820;
  
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  
  --color-accent: #dfc15d; /* Champagne Gold */
  --color-accent-rgb: 223, 193, 93;
  --color-accent-hover: #f3d879;
  
  --color-secondary: #0ea5e9; /* Sky Blue for tech/venture context */
  --color-secondary-rgb: 14, 165, 233;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(223, 193, 93, 0.3);
  
  --glow-accent: rgba(223, 193, 93, 0.15);
  
  /* Fonts */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-xxl: 6rem;
  
  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  
  --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 30px -10px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 20px 50px -15px rgba(0, 0, 0, 0.9);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-base);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Common Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.section {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
  position: relative;
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-xxl);
    padding-bottom: var(--space-xxl);
  }
}

/* Glassmorphism utility */
.glass {
  background: rgba(16, 18, 24, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
}

/* Sticky Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-normal);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(7, 8, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  height: 70px;
}

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

.brand {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -0.04em;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-text-primary);
}

.brand span {
  background: linear-gradient(135deg, var(--color-accent) 0%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: none;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }
  
  .nav-links a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    position: relative;
    padding: var(--space-xs) 0;
  }
  
  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-fast);
  }
  
  .nav-links a:hover {
    color: var(--color-text-primary);
  }
  
  .nav-links a:hover::after,
  .nav-links a.active::after {
    width: 100%;
  }
}

/* Visual CTA Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--bg-base);
  box-shadow: 0 4px 14px 0 rgba(223, 193, 93, 0.2);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(223, 193, 93, 0.4);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-text-primary);
  transform: translateY(-2px);
}

.btn-outline-gold {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--border-accent);
}

.btn-outline-gold:hover {
  background: rgba(223, 193, 93, 0.08);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.nav-cta {
  display: none;
}

@media (min-width: 768px) {
  .nav-cta {
    display: inline-flex;
  }
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Sidebar Nav Drawer */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 400px;
  height: 100vh;
  background: var(--bg-surface);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  box-shadow: var(--shadow-lg);
  border-left: 1px solid var(--border-color);
  transition: right var(--transition-normal);
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav a {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-text-secondary);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-accent);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + var(--space-lg));
  position: relative;
  overflow: hidden;
}

/* Decorative backdrop glow */
.hero-bg-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(223, 193, 93, 0.04) 0%, rgba(14, 165, 233, 0.03) 50%, rgba(0,0,0,0) 100%);
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(223, 193, 93, 0.07);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.hero-tag::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-accent);
}

.hero-title {
  font-size: 2.8rem;
  line-height: 1.05;
  margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 4.5rem;
  }
}

.hero-title span {
  display: block;
  background: linear-gradient(135deg, #fff 30%, rgba(255,255,255,0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-lg);
  font-weight: 400;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

/* Metric Stats Dashboard */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-lg);
}

@media (min-width: 480px) {
  .metrics-row {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric-item .num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: baseline;
}

.metric-item .num span.suffix {
  font-size: 1.2rem;
  margin-left: 2px;
}

.metric-item .label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
}

/* Hero visual card */
.hero-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  background: linear-gradient(135deg, rgba(22, 24, 32, 0.7) 0%, rgba(10, 11, 14, 0.9) 100%);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.avatar-frame {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  padding: 2px;
}

.avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: calc(var(--radius-md) - 2px);
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--color-accent);
}

.hero-card-meta h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.hero-card-meta p {
  font-size: 0.8rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.hero-card-quote {
  font-style: italic;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-sm);
  margin: var(--space-xs) 0;
}

.hero-card-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
}

/* Sections General Components */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
  display: inline-block;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 3rem;
  }
}

/* About & Focus Grid */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 992px) {
  .about-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.about-philosophy {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.about-philosophy p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

@media (min-width: 480px) {
  .philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.philosophy-card {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  transition: all var(--transition-normal);
}

.philosophy-card:hover {
  border-color: var(--color-accent);
  background: var(--bg-surface-hover);
  transform: translateY(-2px);
}

.philosophy-icon {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.philosophy-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.philosophy-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Advisory areas / expertise lists */
.skills-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.skill-tag-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: rgba(223, 193, 93, 0.05);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

/* Ventures Grid (Projects) */
.ventures-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .ventures-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .ventures-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.venture-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  padding: var(--space-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
}

.venture-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.venture-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.venture-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-accent);
}

.venture-status {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-active {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-exited {
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-secondary);
  border: 1px solid rgba(14, 165, 233, 0.2);
}

.venture-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.venture-role {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.venture-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.venture-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-sm);
  margin-top: auto;
}

.venture-stat-item .val {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.venture-stat-item .lbl {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Timeline (Experience) Section */
.timeline-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: var(--border-color);
}

@media (min-width: 768px) {
  .timeline-container::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
  width: 100%;
  padding-left: 50px;
}

@media (min-width: 768px) {
  .timeline-item {
    width: 50%;
    padding-left: 0;
    padding-right: 0;
  }
  
  .timeline-item-left {
    left: 0;
    padding-right: var(--space-xl);
    text-align: right;
  }
  
  .timeline-item-right {
    left: 50%;
    padding-left: var(--space-xl);
  }
}

.timeline-dot {
  position: absolute;
  top: 4px;
  left: 11px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 4px solid var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
  z-index: 10;
}

@media (min-width: 768px) {
  .timeline-item-left .timeline-dot {
    right: -10px;
    left: auto;
  }
  
  .timeline-item-right .timeline-dot {
    left: -10px;
  }
}

.timeline-date {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.timeline-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.timeline-card:hover {
  border-color: var(--border-accent);
}

.timeline-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.timeline-card .company {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.timeline-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.timeline-card ul {
  list-style: none;
  margin-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.timeline-card li {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: 12px;
  text-align: left;
}

.timeline-card li::before {
  content: '•';
  color: var(--color-accent);
  position: absolute;
  left: 0;
}

/* Print/CV Toggle Shell and Preview CSS */
.cv-preview-section {
  background: var(--bg-surface-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cv-preview-shell {
  max-width: 850px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: #ffffff;
  color: #1e293b;
}

.cv-preview-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  color: var(--color-text-primary);
}

.cv-preview-header-bar p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* Contact Section & Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 0.8fr 1.2fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info-title {
  font-size: 1.8rem;
  margin-bottom: var(--space-xs);
}

.contact-info-desc {
  color: var(--color-text-secondary);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-weight: bold;
}

.contact-item-details h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.contact-item-details a {
  font-size: 1rem;
  font-weight: 700;
}

.contact-item-details a:hover {
  color: var(--color-accent);
}

/* Contact Form Elements */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  background: var(--bg-surface);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 480px) {
  .form-group-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-base);
  border: 1px solid var(--border-color);
  color: var(--color-text-primary);
  padding: 0.85rem var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 12px var(--glow-accent);
}

/* Footer Section */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0;
  background: #050608;
}

.footer-shell {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .footer-shell {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-brand {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.25rem;
}

.footer-brand span {
  color: var(--color-accent);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

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

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Highlight tags inside lists */
.highlight-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
  background: rgba(14, 165, 233, 0.15);
  color: var(--color-secondary);
  margin-left: var(--space-xs);
}

/* Language Visibility Rules */
body.lang-en-active .lang-vi {
  display: none !important;
}

body:not(.lang-en-active) .lang-en {
  display: none !important;
}

/* Language Selector Styles */
.lang-selector {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0.25rem 0.4rem;
  font-family: var(--font-body);
  font-weight: 700;
  transition: color var(--transition-fast);
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.lang-btn.active, .lang-btn:hover {
  color: var(--color-accent);
}

.lang-separator {
  color: var(--border-color);
  font-size: 0.75rem;
}

/* Position lang selector next to CTA button in desktop header */
.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}