/* ===================================
   DESIGN SYSTEM & VARIABLES
   =================================== */
:root {
  /* Colors - Dark Mode (Default) */
  --primary: #2D7BFF;
  --primary-light: #5C97FF;
  --primary-dark: #1F4FCC;
  --secondary: #2ED573;
  --secondary-light: #55E08E;
  --secondary-dark: #1FAB54;
  --accent: #FF6B6B;
  --accent-light: #FF8A8A;
  
  /* Background Colors */
  --bg-primary: #030915;
  --bg-secondary: #07142B;
  --bg-tertiary: #0F203C;
  --bg-elevated: rgba(16, 30, 58, 0.92);
  --bg-hover: rgba(30, 54, 94, 0.96);
  
  /* Text Colors */
  --text-primary: #F5F8FF;
  --text-secondary: #CAD5FF;
  --text-tertiary: #94A4D9;
  --text-muted: #5E6E92;
  
  /* Border Colors */
  --border-primary: rgba(74, 138, 255, 0.25);
  --border-secondary: rgba(255, 255, 255, 0.05);
  --border-accent: rgba(45, 123, 255, 0.4);
  
  /* Legacy (for compatibility) */
  --dark: var(--bg-primary);
  --light: var(--text-primary);
  --gray-100: #F8F9FA;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-700: #495057;
  --gray-800: #343A40;
  
  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  
  /* Shadows - Enhanced */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);
  --shadow-glow-secondary: 0 0 20px rgba(0, 200, 83, 0.3);
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Mode Variables */
body.light-mode {
  /* Background Colors */
  --bg-primary: #F6F9FF;
  --bg-secondary: #ECF2FF;
  --bg-tertiary: #DEE7FF;
  --bg-elevated: rgba(13, 35, 67, 0.04);
  --bg-hover: rgba(13, 35, 67, 0.08);
  
  /* Text Colors */
  --text-primary: #0B1633;
  --text-secondary: #314064;
  --text-tertiary: #556189;
  --text-muted: #8A94B5;
  
  /* Border Colors */
  --border-primary: rgba(13, 35, 67, 0.12);
  --border-secondary: rgba(13, 35, 67, 0.08);
  --border-accent: rgba(45, 123, 255, 0.22);
  
  /* Shadows - Adjusted for light mode */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.15);
  --shadow-glow-secondary: 0 0 20px rgba(0, 200, 83, 0.15);
}

/* ===================================
   RESET & BASE
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

ul {
  list-style: none;
}

/* ===================================
   UTILITIES
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header .label {
  display: inline-block;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

body.light-mode .section-header .label {
  color: var(--primary-dark);
  background: rgba(45, 123, 255, 0.1);
  border-color: rgba(45, 123, 255, 0.25);
}

body.light-mode .section-header h2 {
  color: var(--text-primary);
}

body.light-mode .section-header p {
  color: var(--text-secondary);
}

/* ===================================
   LOADER
   =================================== */
.loader {
  position: fixed;
  inset: 0;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s, visibility 0.5s;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-primary);
  will-change: background, box-shadow;
}

body.light-mode .navbar {
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(13, 35, 67, 0.1);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(10, 14, 39, 0.95);
}

body.light-mode .navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
  display: inline-flex;
  align-items: center;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.logo img {
  width: 155px;
  height: 75px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: translateY(-2px) scale(1.05);
  opacity: 0.9;
}

body.light-mode .logo img {
  filter: drop-shadow(0 4px 12px rgba(45, 123, 255, 0.2));
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--light);
  transition: var(--transition);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  position: relative;
  font-weight: 500;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}

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

.nav-link:focus {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
  border-radius: 4px;
}

.theme-toggle {
  position: relative;
  width: 60px;
  height: 32px;
  background: var(--bg-elevated);
  border: 2px solid var(--border-primary);
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  padding: 0 4px;
}

.theme-toggle::before {
  content: '🌙';
  position: absolute;
  left: 6px;
  font-size: 1rem;
  transition: var(--transition);
}

.theme-toggle::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  left: 4px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
  background: var(--bg-hover);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

body.light-mode .theme-toggle::before {
  content: '☀️';
  left: auto;
  right: 6px;
}

body.light-mode .theme-toggle::after {
  left: calc(100% - 28px);
  background: linear-gradient(135deg, #FFA500, #FFD700);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(60px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  position: relative;
  overflow: hidden;
}

body.light-mode .hero {
  background: linear-gradient(180deg, #D5E5FF 0%, #C5D9FF 100%);
}

body.light-mode .hero::before {
  background: radial-gradient(circle at 18% 15%, rgba(45, 123, 255, 0.15), transparent 60%),
              radial-gradient(circle at 82% 22%, rgba(46, 213, 115, 0.12), transparent 62%),
              linear-gradient(180deg, rgba(213, 229, 255, 0.85) 0%, rgba(197, 217, 255, 0.9) 100%);
  opacity: 1;
}

body.light-mode .hero-greeting {
  color: var(--primary-dark);
  font-weight: 600;
}

body.light-mode .hero-title {
  color: #0B1633;
  background: linear-gradient(135deg, #1F4FCC, #1FAB54);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

body.light-mode .hero-subtitle {
  color: #1FAB54;
  font-weight: 600;
}

body.light-mode .hero-description {
  color: #314064;
  font-weight: 500;
}

body.light-mode .hero-stats .stat {
  background: rgba(255, 255, 255, 0.7);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(13, 35, 67, 0.15);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .hero-stats .stat span {
  color: var(--primary-dark);
}

body.light-mode .hero-image img {
  border: 3px solid var(--primary);
  box-shadow: 0 20px 50px rgba(45, 123, 255, 0.25);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 18% 15%, rgba(45, 123, 255, 0.28), transparent 55%),
              radial-gradient(circle at 82% 22%, rgba(46, 213, 115, 0.24), transparent 58%),
              linear-gradient(180deg, rgba(3, 10, 26, 0.98) 0%, rgba(6, 19, 39, 0.98) 40%, rgba(4, 12, 28, 1) 100%);
  opacity: 0.95;
  pointer-events: none;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  z-index: 1;
}

.hero-greeting {
  color: var(--primary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 0.6s ease-out;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 0.6s ease-out 0.1s backwards;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--secondary);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.hero-description {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  line-height: 1.8;
  animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease-out 0.4s backwards;
}

.hero-cta .btn-secondary {
  background: rgba(46, 213, 115, 0.12);
  color: var(--text-primary);
  border: 1px solid rgba(46, 213, 115, 0.45);
}

.hero-cta .btn-secondary:hover {
  background: rgba(46, 213, 115, 0.18);
  border-color: rgba(46, 213, 115, 0.65);
}

.hero-cta .btn-secondary::before {
  background: var(--secondary);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out 0.5s backwards;
}

.hero-stats .stat {
  display: flex;
  flex-direction: column;
}

.hero-stats .stat {
  transition: var(--transition);
}

.hero-stats .stat span {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.hero-image {
  position: relative;
  animation: fadeInRight 0.8s ease-out 0.3s backwards;
}

.hero-image img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--primary);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Performance optimizations */
.hero-content > *,
.project-card,
.skill-category,
.timeline-item {
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(180deg, #030817 0%, rgba(45, 123, 255, 0.15) 55%, rgba(31, 75, 150, 0.05) 100%);
}

body.light-mode .projects {
  background: linear-gradient(180deg, #ECF2FF 0%, #DEE7FF 100%);
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(18, 34, 66, 0.75);
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid var(--border-primary);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.filter-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: width 0.4s ease, height 0.4s ease;
  opacity: 0.3;
}

.filter-btn:hover::before {
  width: 300px;
  height: 300px;
}

.filter-btn:hover {
  background: rgba(30, 54, 94, 0.9);
  border-color: rgba(92, 151, 255, 0.65);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--text-primary);
  border-color: transparent;
  box-shadow: 0 12px 30px rgba(45, 123, 255, 0.35);
  transform: translateY(-2px);
}

.filter-btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

body.light-mode .filter-btn {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(13, 35, 67, 0.15);
  color: var(--text-secondary);
}

body.light-mode .filter-btn:hover {
  background: rgba(255, 255, 255, 1);
  border-color: rgba(45, 123, 255, 0.4);
  color: var(--text-primary);
}

body.light-mode .filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #FFFFFF;
  box-shadow: 0 8px 20px rgba(45, 123, 255, 0.3);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background: linear-gradient(170deg, rgba(15, 30, 58, 0.96) 0%, rgba(7, 18, 36, 0.96) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(74, 138, 255, 0.28);
  position: relative;
  box-shadow: 0 22px 50px rgba(5, 12, 26, 0.55);
  will-change: transform, box-shadow;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 28px 70px rgba(10, 30, 60, 0.6);
  border-color: rgba(92, 151, 255, 0.65);
  background: linear-gradient(170deg, rgba(21, 40, 76, 0.98) 0%, rgba(10, 24, 49, 0.98) 100%);
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--gray-800);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-link {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 40px;
  height: 40px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-link {
  opacity: 1;
}

.project-content {
  padding: var(--spacing-md);
}

.project-content h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--secondary);
  color: #FFFFFF;
  font-weight: 600;
}

.badge.award {
  background: var(--accent);
  color: #FFFFFF;
}

body.light-mode .badge {
  background: var(--secondary-dark);
  color: #FFFFFF;
}

body.light-mode .badge.award {
  background: #E63946;
  color: #FFFFFF;
}

.project-content p {
  color: rgba(210, 220, 255, 0.9);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

.metrics {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  background: linear-gradient(135deg, rgba(45, 123, 255, 0.2) 0%, rgba(46, 213, 115, 0.16) 100%);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(74, 138, 255, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.metrics div {
  font-size: 0.875rem;
}

.metrics strong {
  color: #8AB4FF;
  font-size: 1.25rem;
  display: block;
}

.tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tags span {
  padding: 0.25rem 0.75rem;
  background: rgba(18, 34, 66, 0.6);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: rgba(210, 220, 255, 0.85);
  border: 1px solid rgba(74, 138, 255, 0.22);
}

body.light-mode .project-card {
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.98) 0%, rgba(246, 249, 255, 1) 100%);
  border: 1px solid rgba(13, 35, 67, 0.18);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

body.light-mode .project-card:hover {
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.14);
  border-color: rgba(45, 123, 255, 0.4);
  background: linear-gradient(170deg, rgba(255, 255, 255, 1) 0%, rgba(246, 249, 255, 1) 100%);
  transform: translateY(-10px);
}

body.light-mode .project-image {
  background: rgba(13, 35, 67, 0.04);
}

body.light-mode .project-content h3 {
  color: var(--text-primary);
}

body.light-mode .project-content p {
  color: var(--text-secondary);
}

body.light-mode .metrics {
  background: linear-gradient(135deg, rgba(45, 123, 255, 0.12) 0%, rgba(46, 213, 115, 0.1) 100%);
  border-color: rgba(45, 123, 255, 0.25);
}

body.light-mode .metrics strong {
  color: var(--primary-dark);
}

body.light-mode .tags span {
  background: rgba(13, 35, 67, 0.08);
  border: 1px solid rgba(13, 35, 67, 0.18);
  color: var(--text-secondary);
}

/* ===================================
   SKILLS SECTION
   =================================== */
.skills {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(180deg, rgba(5, 12, 26, 1) 0%, rgba(9, 24, 47, 0.95) 100%);
}

body.light-mode .skills {
  background: linear-gradient(180deg, #DEE7FF 0%, #F6F9FF 100%);
}

body.light-mode .skill-category {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.92) 0%, rgba(246, 249, 255, 0.95) 100%);
  border: 1px solid rgba(13, 35, 67, 0.12);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

body.light-mode .skill-category:hover {
  border-color: rgba(45, 123, 255, 0.3);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
  background: linear-gradient(165deg, rgba(255, 255, 255, 1) 0%, rgba(246, 249, 255, 1) 100%);
}

body.light-mode .skill-bar {
  background: rgba(13, 35, 67, 0.08);
  border-color: rgba(13, 35, 67, 0.12);
}

body.light-mode .certifications {
  background: linear-gradient(135deg, rgba(45, 123, 255, 0.12), rgba(46, 213, 115, 0.1));
  border: 1px solid rgba(13, 35, 67, 0.15);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

body.light-mode .cert-badges span {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(13, 35, 67, 0.2);
  color: var(--text-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.skill-category {
  background: linear-gradient(165deg, rgba(16, 32, 60, 0.9) 0%, rgba(9, 22, 44, 0.92) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(74, 138, 255, 0.24);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(5, 12, 26, 0.45);
  will-change: transform, box-shadow;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.skill-category:hover::before {
  left: 100%;
}

.skill-category:hover {
  border-color: rgba(92, 151, 255, 0.6);
  transform: translateY(-6px);
  box-shadow: 0 20px 55px rgba(8, 20, 44, 0.55);
  background: linear-gradient(165deg, rgba(22, 46, 88, 0.95) 0%, rgba(12, 28, 56, 0.97) 100%);
}

.skill-category h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.skill-item {
  margin-bottom: var(--spacing-md);
}

.skill-item span {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.skill-bar {
  height: 10px;
  background: rgba(15, 32, 62, 0.85);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(74, 138, 255, 0.15);
}

.skill-bar div {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 10px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.skill-bar div::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

.certifications {
  text-align: center;
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, rgba(45, 123, 255, 0.12), rgba(46, 213, 115, 0.1));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(74, 138, 255, 0.2);
  box-shadow: 0 12px 35px rgba(5, 12, 26, 0.45);
}

.certifications h3 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
}

.cert-badges {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.cert-badges span {
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */
.experience {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(180deg, rgba(5, 12, 26, 1) 0%, rgba(7, 22, 42, 0.95) 60%, rgba(6, 18, 36, 1) 100%);
}

body.light-mode .experience {
  background: linear-gradient(180deg, #F6F9FF 0%, #ECF2FF 100%);
}

body.light-mode .timeline-content {
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.95) 0%, rgba(246, 249, 255, 1) 100%);
  border: 1px solid rgba(13, 35, 67, 0.18);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
}

body.light-mode .timeline-content h3 {
  color: var(--secondary-dark);
}

body.light-mode .timeline-content h4 {
  color: var(--text-secondary);
}

body.light-mode .timeline-content li {
  color: var(--text-secondary);
}

body.light-mode .timeline-date {
  background: var(--primary);
  color: #FFFFFF;
}

body.light-mode .timeline::before {
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

body.light-mode .timeline-item::before {
  background: var(--primary);
  border-color: var(--bg-primary);
  box-shadow: 0 0 0 4px rgba(45, 123, 255, 0.15);
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: var(--spacing-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -42px;
  top: 0;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border: 4px solid var(--dark);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2);
}

.timeline-date {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: var(--light);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.timeline-content {
  background: linear-gradient(170deg, rgba(16, 34, 62, 0.9) 0%, rgba(9, 24, 46, 0.95) 100%);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(74, 138, 255, 0.24);
  box-shadow: 0 18px 45px rgba(5, 12, 26, 0.45);
}

.timeline-content h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--secondary);
}

.timeline-content h4 {
  color: var(--gray-300);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
}

.timeline-content ul {
  list-style: none;
}

.timeline-content li {
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  position: relative;
  color: rgba(210, 220, 255, 0.85);
}

.timeline-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(180deg, rgba(4, 12, 28, 1) 0%, rgba(9, 26, 52, 0.95) 100%);
}

body.light-mode .contact {
  background: linear-gradient(180deg, #ECF2FF 0%, #DEE7FF 100%);
}

body.light-mode .info-item {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.92) 0%, rgba(246, 249, 255, 0.95) 100%);
  border: 1px solid rgba(13, 35, 67, 0.12);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

body.light-mode .info-item:hover {
  border-color: rgba(45, 123, 255, 0.3);
  background: linear-gradient(160deg, rgba(255, 255, 255, 1) 0%, rgba(246, 249, 255, 1) 100%);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

body.light-mode .form-group input,
body.light-mode .form-group textarea {
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid rgba(13, 35, 67, 0.2);
  color: var(--text-primary);
}

body.light-mode .form-group input:focus,
body.light-mode .form-group textarea:focus {
  background: rgba(255, 255, 255, 1);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(45, 123, 255, 0.15);
}

body.light-mode .form-group input::placeholder,
body.light-mode .form-group textarea::placeholder {
  color: var(--text-muted);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  max-width: 1000px;
  margin: 0 auto;
}

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

.info-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: linear-gradient(160deg, rgba(16, 34, 62, 0.92) 0%, rgba(9, 22, 44, 0.95) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(74, 138, 255, 0.22);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(5, 12, 26, 0.4);
}

.info-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.info-item:hover::before {
  transform: scaleY(1);
}

.info-item:hover {
  border-color: rgba(92, 151, 255, 0.65);
  transform: translateX(8px);
  background: linear-gradient(160deg, rgba(24, 48, 88, 0.95) 0%, rgba(12, 28, 56, 0.97) 100%);
  box-shadow: 0 24px 55px rgba(8, 22, 46, 0.52);
}

.info-item .icon {
  font-size: 2rem;
}

.info-item h4 {
  font-family: var(--font-heading);
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.info-item a {
  color: var(--gray-300);
  display: block;
  margin-bottom: 0.25rem;
}

.info-item a:hover {
  color: var(--primary);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--text-primary);
  transition: var(--transition);
  border: 1px solid var(--border-primary);
}

body.light-mode .social-links a {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(13, 35, 67, 0.15);
  color: var(--text-primary);
}

.social-links a::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.social-links a:hover::before {
  opacity: 1;
}

.social-links a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

body.light-mode .social-links a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(45, 123, 255, 0.3);
}

.social-links a svg {
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

/* Couleurs spécifiques par réseau social */
.social-links a[aria-label="GitHub"]:hover {
  background: #333;
  border-color: #333;
}

.social-links a[aria-label="LinkedIn"]:hover {
  background: #0077B5;
  border-color: #0077B5;
}

.social-links a[aria-label="Twitter"]:hover {
  background: #1DA1F2;
  border-color: #1DA1F2;
}

.social-links a[aria-label="Facebook"]:hover {
  background: #1877F2;
  border-color: #1877F2;
}

.social-links a[aria-label="Instagram"]:hover {
  background: linear-gradient(45deg, #F58529, #DD2A7B, #8134AF, #515BD4);
  border-color: transparent;
}

.social-links a[aria-label="WhatsApp"]:hover {
  background: #25D366;
  border-color: #25D366;
}

.social-links a[aria-label="YouTube"]:hover {
  background: #FF0000;
  border-color: #FF0000;
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-hover);
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15), var(--shadow-glow);
  transform: translateY(-2px);
}

.form-group input:hover,
.form-group textarea:hover {
  border-color: var(--border-accent);
}

.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
  border-color: var(--accent);
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
  border-color: var(--secondary);
}

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

/* ===================================
   FOOTER
   =================================== */
.footer {
  background: rgba(0, 0, 0, 0.3);
  padding: var(--spacing-2xl) 0 var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

body.light-mode .footer {
  background: rgba(236, 242, 255, 0.8);
  border-top: 1px solid rgba(13, 35, 67, 0.1);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
}

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

body.light-mode .footer-brand h3 {
  color: var(--primary-dark);
}

body.light-mode .footer-brand p {
  color: var(--text-secondary);
}

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

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-heading);
  margin-bottom: var(--spacing-sm);
  color: var(--secondary);
}

body.light-mode .footer-links h4,
body.light-mode .footer-contact h4 {
  color: var(--secondary-dark);
}

.footer-links a {
  color: var(--text-secondary);
  transition: var(--transition);
}

body.light-mode .footer-links a {
  color: var(--text-secondary);
}

body.light-mode .footer-links a:hover {
  color: var(--primary-dark);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 0.5rem;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

body.light-mode .footer-bottom {
  border-top: 1px solid rgba(13, 35, 67, 0.15);
  color: var(--text-secondary);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
  .logo img {
    width: 100px;
    height: 48px;
  }

  .nav-container {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 60px;
    right: -100%;
    width: 80%;
    height: calc(100vh - 60px);
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-xl);
    transition: right 0.3s;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
  }

  body.light-mode .nav-menu {
    background: rgba(255, 255, 255, 0.98);
  }
  
  .nav-menu.active {
    right: 0;
  }

  .nav-link {
    padding: var(--spacing-sm) 0;
    font-size: 1.125rem;
  }
  
  .hero {
    padding: calc(60px + var(--spacing-xl)) var(--spacing-sm) var(--spacing-xl);
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .hero-image {
    order: -1;
  }
  
  .hero-image img {
    margin: 0 auto;
    max-width: 280px;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .hero-subtitle {
    font-size: clamp(1.125rem, 4vw, 1.5rem);
  }

  .hero-description {
    font-size: 1rem;
    max-width: 100%;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }

  .hero-stats .stat {
    flex: 1 1 45%;
    min-width: 120px;
  }

  .section-header h2 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .timeline {
    padding-left: var(--spacing-md);
  }
  
  .timeline-item {
    padding-left: var(--spacing-md);
  }
  
  .timeline-item::before {
    left: -26px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .logo img {
    width: 85px;
    height: 41px;
  }

  .nav-container {
    padding: 0.5rem var(--spacing-sm);
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero {
    padding: calc(60px + var(--spacing-md)) var(--spacing-xs) var(--spacing-md);
  }

  .hero-title {
    font-size: clamp(1.75rem, 10vw, 2rem);
  }

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

  .hero-description {
    font-size: 0.9375rem;
  }

  .hero-image img {
    max-width: 240px;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .hero-stats .stat {
    width: 100%;
  }

  .hero-stats .stat span {
    font-size: 1.75rem;
  }

  .section-header h2 {
    font-size: clamp(1.5rem, 8vw, 2rem);
  }

  .section-header p {
    font-size: 1rem;
  }
  
  .project-filters {
    gap: 0.5rem;
  }
  
  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }

  .project-card {
    margin-bottom: var(--spacing-sm);
  }

  .skill-category {
    padding: var(--spacing-md);
  }

  .timeline-content {
    padding: var(--spacing-sm);
  }

  .info-item {
    padding: var(--spacing-sm);
  }

  .form-group input,
  .form-group textarea {
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
  }
  
  .cert-badges {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .social-links {
    justify-content: center;
  }

  .social-links a {
    width: 44px;
    height: 44px;
  }
}

/* ===================================
   ANIMATIONS
   =================================== */
.fade-in {
  animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Scroll reveal */
[data-aos] {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos].aos-animate {
  opacity: 1;
}

/* Pulse animation for important elements */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Glow animation */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 102, 255, 0.6);
  }
}

/* Gradient animation */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ===================================
   BUTTONS - CRITICAL MISSING STYLES
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn:hover::before {
  opacity: 1;
}

.btn:focus {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
}

.btn:active {
  transform: scale(0.98);
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-primary);
  box-shadow: 0 8px 24px rgba(45, 123, 255, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  box-shadow: 0 12px 32px rgba(45, 123, 255, 0.45);
  transform: translateY(-2px);
}

/* Secondary Button */
.btn-secondary {
  background: rgba(46, 213, 115, 0.12);
  color: var(--text-primary);
  border: 2px solid rgba(46, 213, 115, 0.45);
}

.btn-secondary:hover {
  background: rgba(46, 213, 115, 0.2);
  border-color: rgba(46, 213, 115, 0.7);
  box-shadow: 0 8px 24px rgba(46, 213, 115, 0.25);
  transform: translateY(-2px);
}

/* Light Mode Adjustments */
body.light-mode .btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 8px 24px rgba(45, 123, 255, 0.3);
  color: #FFFFFF;
}

body.light-mode .btn-primary:hover {
  box-shadow: 0 12px 32px rgba(45, 123, 255, 0.4);
}

body.light-mode .btn-secondary {
  background: rgba(46, 213, 115, 0.1);
  border-color: rgba(46, 213, 115, 0.4);
  color: var(--text-primary);
}

body.light-mode .btn-secondary:hover {
  background: rgba(46, 213, 115, 0.18);
  border-color: rgba(46, 213, 115, 0.6);
}