/* ========================================
   Discord-Inspired Portfolio - CSS
   Color Theme: Cyan (#00D9FF / #0891B2) & Light Green (#10B981 / #34D399)
   ======================================== */

/* ========================================
   CSS Custom Properties (Easy Theming)
   ======================================== */
:root {
  /* Primary Colors */
  --color-cyan: #00D9FF;
  --color-cyan-dark: #0891B2;
  --color-green: #10B981;
  --color-green-light: #34D399;
  
  /* Background Colors - Dark Theme */
  --bg-primary: #1e1e2e;
  --bg-secondary: #27293d;
  --bg-tertiary: #2d2f3f;
  --bg-card: rgba(39, 41, 61, 0.8);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #b9bbbe;
  --text-muted: #72767d;
  
  /* Accent Colors */
  --accent-gradient: linear-gradient(135deg, var(--color-cyan), var(--color-green));
  --accent-gradient-hover: linear-gradient(135deg, var(--color-green), var(--color-cyan));
  
  /* UI Colors */
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-cyan: 0 0 20px rgba(0, 217, 255, 0.3);
  --shadow-glow-green: 0 0 20px rgba(16, 185, 129, 0.3);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 50%;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Fonts */
  --font-primary: 'Inter', sans-serif;
  --font-headings: 'Poppins', sans-serif;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e5e7eb;
  --bg-card: rgba(255, 255, 255, 0.8);
  
  --text-primary: #1e1e2e;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  
  --border-color: rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* ========================================
   Base Styles
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

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

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  line-height: 1.2;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-primary);
}

.title-number {
  font-size: 1.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.title-line {
  flex: 1;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0.3;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  font-family: var(--font-primary);
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-cyan), var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--color-cyan);
}

.btn-secondary:hover {
  background: var(--color-cyan);
  color: white;
  box-shadow: var(--shadow-glow-cyan);
}

/* ========================================
   Navigation Bar
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem var(--spacing-md);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-headings);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.logo-bracket {
  color: var(--color-cyan);
  font-weight: 800;
}

.logo-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  background: var(--accent-gradient);
  color: white;
  transform: rotate(15deg);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--color-cyan);
  border-radius: 2px;
  transition: all var(--transition-base);
}

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

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

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  animation: bgFloat 10s ease-in-out infinite;
  z-index: -1;
}

@keyframes bgFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -20px); }
}

.hero-container {
  width: 100%;
}

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

.hero-text {
  animation: fadeInLeft 1s ease-out;
}

.hero-greeting {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: 4rem;
  margin-bottom: 1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: 2rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  min-height: 3rem;
  display: flex;
  align-items: center;
}

.typing-text {
  color: var(--color-cyan);
}

.cursor {
  color: var(--color-green);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.hero-social {
  display: flex;
  gap: 1rem;
}

.social-icon {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1.25rem;
  transition: all var(--transition-base);
}

.social-icon:hover {
  background: var(--accent-gradient);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-cyan);
}

.hero-image {
  animation: fadeInRight 1s ease-out;
  display: flex;
  justify-content: center;
}

.image-wrapper {
  position: relative;
  width: 400px;
  height: 400px;
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-xl);
  border: 4px solid transparent;
  background: var(--accent-gradient);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  position: relative;
  z-index: 2;
}

.image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110%;
  height: 110%;
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  opacity: 0.3;
  filter: blur(30px);
  z-index: 1;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.5; transform: translate(-50%, -50%) scale(1.05); }
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator a {
  color: var(--color-cyan);
  font-size: 2rem;
  text-decoration: none;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

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

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

/* ========================================
   About Section
   ======================================== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.about-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 350px;
}

.about-image-wrapper img {
  width: 100%;
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 2;
}

.about-image-border {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 100%;
  height: 100%;
  border: 3px solid var(--color-cyan);
  border-radius: var(--radius-lg);
  z-index: 1;
  transition: all var(--transition-base);
}

.about-image-wrapper:hover .about-image-border {
  top: 10px;
  left: 10px;
  border-color: var(--color-green);
}

.about-bio,
.about-objective {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.info-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  gap: 1rem;
  align-items: center;
  transition: all var(--transition-base);
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-cyan);
}

.info-card i {
  font-size: 1.5rem;
  color: var(--color-cyan);
}

.info-card div {
  display: flex;
  flex-direction: column;
}

.info-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.info-value {
  font-weight: 600;
  color: var(--text-primary);
}

/* ========================================
   Education Section
   ======================================== */
.education-timeline {
  position: relative;
  padding-left: 2rem;
}

.education-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent-gradient);
}

.education-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 2rem;
}

.education-item::before {
  content: '';
  position: absolute;
  left: -2.5rem;
  top: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: var(--shadow-glow-cyan);
  z-index: 2;
}

.education-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.education-card:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-cyan);
}

.education-header {
  display: flex;
  align-items: start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.education-logo {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 10px var(--color-cyan));
}

.education-info h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.education-institution {
  color: var(--color-cyan);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.education-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.education-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.education-cgpa {
  color: var(--color-green);
  font-weight: 700;
  font-size: 1rem;
}

.education-achievements {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.education-achievements ul {
  list-style: none;
  padding: 0;
}

.education-achievements li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.education-achievements li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--color-cyan);
  font-size: 1.2rem;
}

/* ========================================
   Skills Section
   ======================================== */
.skills-container {
  display: grid;
  gap: var(--spacing-lg);
}

.skill-category {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.skill-category:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-cyan);
}

.category-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
}

.category-title i {
  color: var(--color-cyan);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.skill-card {
  background: var(--bg-tertiary);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow-cyan);
  border-color: var(--color-cyan);
}

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

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.skill-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-name i {
  color: var(--color-cyan);
  font-size: 1.25rem;
}

.skill-level {
  font-weight: 700;
  color: var(--color-green);
}

.skill-progress {
  width: 100%;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 3px;
  overflow: hidden;
}

.skill-progress-bar {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 3px;
  transition: width 1s ease;
  width: 0;
}

.skill-card:hover .skill-progress-bar {
  width: var(--skill-width);
}

/* ========================================
   Projects Section
   ======================================== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 600;
  transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-glow-cyan);
}

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

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-base);
  opacity: 1;
  transform: scale(1);
}

.project-card.hidden {
  display: none;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
  border-color: var(--color-cyan);
}

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

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

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--accent-gradient);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
  opacity: 0.9;
}

.project-link {
  width: 45px;
  height: 45px;
  background: white;
  color: var(--color-cyan);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.project-link:hover {
  transform: scale(1.1);
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

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

.tech-badge {
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--color-cyan);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ========================================
   Experience Section
   ======================================== */
.experience-timeline {
  position: relative;
  padding-left: 2rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent-gradient);
}

.experience-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 2rem;
}

.experience-item::before {
  content: '';
  position: absolute;
  left: -2.5rem;
  top: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: var(--shadow-glow-green);
  z-index: 2;
}

.experience-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.experience-card:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-green);
}

.experience-header {
  margin-bottom: 1rem;
}

.experience-role {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.experience-company {
  color: var(--color-green);
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.experience-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.experience-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.experience-type {
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  color: var(--color-cyan);
  font-weight: 600;
}

.experience-responsibilities {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.experience-responsibilities ul {
  list-style: none;
  padding: 0;
}

.experience-responsibilities li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.experience-responsibilities li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--color-green);
  font-size: 1.2rem;
}

.experience-technologies {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ========================================
   Certifications Section
   ======================================== */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.certification-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.certification-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.certification-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-cyan);
}

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

.certification-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.certification-name {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.certification-issuer {
  color: var(--color-cyan);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.certification-date {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.certification-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-green);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.certification-link:hover {
  color: var(--color-cyan);
  transform: translateX(5px);
}

/* ========================================
   Achievements Section
   ======================================== */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.achievement-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}

.achievement-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.achievement-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.achievement-card:hover::after {
  opacity: 1;
}

.achievement-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  animation: float 3s ease-in-out infinite;
}

.achievement-icon.cyan {
  color: var(--color-cyan);
  filter: drop-shadow(var(--shadow-glow-cyan));
}

.achievement-icon.green {
  color: var(--color-green);
  filter: drop-shadow(var(--shadow-glow-green));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.achievement-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.achievement-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-lg);
}

.contact-info h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.contact-details {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 1rem;
  transition: all var(--transition-base);
}

.contact-item:hover {
  border-color: var(--color-cyan);
  transform: translateX(5px);
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--color-cyan);
}

.contact-item div {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.contact-value {
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.contact-value:hover {
  color: var(--color-cyan);
}

.contact-social {
  display: flex;
  gap: 1rem;
}

.contact-form {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-cyan);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

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

.error-message {
  display: block;
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.form-status {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
  display: none;
}

.form-status.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-green);
  border: 1px solid var(--color-green);
  display: block;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid #ef4444;
  display: block;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-section h4 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: 1rem;
}

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

.footer-bottom p {
  margin: 0.5rem 0;
}

.footer-bottom i {
  color: #ef4444;
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  10%, 30% { transform: scale(1.2); }
  20%, 40% { transform: scale(1); }
}

/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow-cyan);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
  animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Intersection Observer Animations */
.hidden-anim {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.show-anim {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text {
    order: 2;
  }
  
  .hero-image {
    order: 1;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-social {
    justify-content: center;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-name {
    font-size: 3rem;
  }
  
  .hero-title {
    font-size: 1.5rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    gap: 1rem;
    box-shadow: var(--shadow-md);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .hamburger {
    display: flex;
  }
  
  .about-info {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .image-wrapper {
    width: 300px;
    height: 300px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: 2.5rem;
  }
  
  .hero-title {
    font-size: 1.25rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .image-wrapper {
    width: 250px;
    height: 250px;
  }
  
  .project-filters {
    flex-direction: column;
  }
  
  .filter-btn {
    width: 100%;
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .navbar,
  .scroll-top,
  .scroll-indicator,
  .theme-toggle,
  .hamburger {
    display: none;
  }
  
  .section {
    page-break-inside: avoid;
  }
}

/* ========================================
   Accessibility
   ======================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}