/* ========================================
   Modern Premium Portfolio Theme
   Enhanced by GitHub Copilot
   ======================================== */

:root {
  /* Enhanced Dark Theme - Cyberpunk Style */
  --bg-primary: #0a0e27;
  --bg-secondary: #10162f;
  --bg-card: #151b38;
  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  
  /* Vibrant Accent Colors */
  --accent: #00d4ff;
  --accent-hover: #00b8e6;
  --accent-glow: rgba(0, 212, 255, 0.5);
  --gradient-from: #00d4ff;
  --gradient-to: #7c3aed;
  --gradient-accent: #ec4899;
  
  /* Borders & Shadows */
  --border-color: rgba(0, 212, 255, 0.2);
  --shadow: rgba(0, 0, 0, 0.4);
  --shadow-lg: rgba(0, 0, 0, 0.6);
  --shadow-glow: rgba(0, 212, 255, 0.3);
  
  /* Light Theme */
  --light-bg-primary: #ffffff;
  --light-bg-secondary: #f1f5f9;
  --light-bg-card: #ffffff;
  --light-text-primary: #0f172a;
  --light-text-secondary: #334155;
  --light-text-muted: #64748b;
  --light-border-color: rgba(0, 212, 255, 0.15);
  --light-shadow: rgba(0, 0, 0, 0.08);
  --light-shadow-lg: rgba(0, 0, 0, 0.12);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Animation */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: var(--light-bg-primary);
  --bg-secondary: var(--light-bg-secondary);
  --bg-card: var(--light-bg-card);
  --text-primary: var(--light-text-primary);
  --text-secondary: var(--light-text-secondary);
  --text-muted: var(--light-text-muted);
  --border-color: var(--light-border-color);
  --shadow: var(--light-shadow);
  --shadow-lg: var(--light-shadow-lg);
  --shadow-glow: var(--light-shadow);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #0a0e27 0%, #1a1038 100%);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: var(--transition-slow);
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

body::after {
  content: '';
  position: fixed;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 0;
}

/* ========================================
   Loading Screen
   ======================================== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0a0e27 0%, #1a1038 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(0, 212, 255, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 14, 39, 0.95);
  box-shadow: 0 4px 30px rgba(0, 212, 255, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  color: var(--accent);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  box-shadow: 0 0 30px var(--accent-glow);
  animation: glow-pulse 3s ease-in-out infinite;
  position: relative;
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50% { box-shadow: 0 0 40px var(--accent-glow); }
}

.logo-icon::before {
  content: '';
  position: absolute;
  inset: -3px;
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  border-radius: 12px;
  z-index: -1;
  opacity: 0.3;
  filter: blur(15px);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-from), var(--gradient-to));
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--accent);
}

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

.theme-toggle {
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: rgba(0, 212, 255, 0.2);
  transform: scale(1.05);
  box-shadow: 0 0 20px var(--accent-glow);
}

.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="light"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: none; }

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-from), var(--gradient-to));
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s ease;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 2px 2px, rgba(0, 212, 255, 0.15) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.3;
  pointer-events: none;
  animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
  0% { transform: translate(0, 0); }
  100% { transform: translate(40px, 40px); }
}

.hero::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
  50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.7; }
}

.hero-content {
  max-width: 1200px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  animation: fadeInUp 0.8s ease-out;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 212, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.hero-badge:hover {
  background: rgba(0, 212, 255, 0.2);
  transform: scale(1.05);
  box-shadow: 0 0 20px var(--accent-glow);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 1rem 0;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to), var(--gradient-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
  animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { filter: hue-rotate(0deg); }
  50% { filter: hue-rotate(20deg); }
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

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

.hero-image {
  position: relative;
  animation: fadeInRight 0.8s ease-out 0.2s backwards;
}

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

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

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  border: 3px solid var(--accent);
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.3);
  animation: morph 8s ease-in-out infinite, float-image 6s ease-in-out infinite;
  position: relative;
  z-index: 1;
}

@keyframes morph {
  0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
  25% { border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%; }
  50% { border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%; }
  75% { border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%; }
}

@keyframes float-image {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

.image-glow {
  position: absolute;
  inset: -20px;
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.4;
  z-index: 0;
  animation: glow-rotate 10s linear infinite;
}

@keyframes glow-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: none;
  font-size: 1rem;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
  z-index: -1;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px var(--accent-glow);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: 5rem 2rem;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-line {
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--gradient-from), var(--gradient-to));
  margin: 0 auto;
  border-radius: 2px;
  box-shadow: 0 0 20px var(--accent-glow);
}

/* ========================================
   Cards
   ======================================== */
.card {
  background: rgba(21, 27, 56, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px var(--shadow);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px var(--shadow-glow);
}

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

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

.skill-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 20px var(--accent-glow));
  animation: float 3s ease-in-out infinite;
}

.skill-category-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.skill-tag {
  background: rgba(0, 212, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.skill-tag:hover {
  background: rgba(0, 212, 255, 0.25);
  transform: scale(1.05);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* ========================================
   Experience & Education
   ======================================== */
.experience-grid,
.education-grid {
  display: grid;
  gap: 2rem;
}

.experience-card,
.education-card {
  padding: 2rem;
}

.card-header {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.company-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 0 20px var(--accent-glow);
  flex-shrink: 0;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.card-subtitle {
  color: var(--text-secondary);
  font-weight: 500;
}

.card-date {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.experience-list,
.education-details {
  list-style: none;
  padding-left: 0;
}

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

.experience-list li::before,
.education-details li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* ========================================
   Projects Section
   ======================================== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
}

.filter-btn:hover,
.filter-btn.active {
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  color: white;
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  padding: 0;
  overflow: hidden;
}

.project-image {
  position: relative;
  height: 250px;
  overflow: hidden;
  background: var(--bg-secondary);
}

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

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

.project-overlay {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
}

.project-status {
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.project-content {
  padding: 2rem;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: #c4b5fd;
  padding: 0.375rem 0.875rem;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition);
}

.tech-tag:hover {
  background: rgba(124, 58, 237, 0.25);
  transform: scale(1.05);
}

.project-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.project-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: var(--transition);
  font-size: 0.875rem;
}

.project-link:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--accent);
  box-shadow: 0 0 15px var(--accent-glow);
}

/* ========================================
   Publications
   ======================================== */
.publications-grid {
  max-width: 900px;
  margin: 0 auto;
}

.publication-card {
  padding: 2.5rem;
}

.publication-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.publication-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

.publication-status {
  background: rgba(234, 179, 8, 0.2);
  color: #fbbf24;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(234, 179, 8, 0.3);
}

.publication-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.4;
  color: var(--text-primary);
}

.publication-authors {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.publication-description {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.publication-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.meta-item {
  background: rgba(0, 212, 255, 0.1);
  padding: 0.5rem 1rem;
  border-radius: 15px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-content {
  max-width: 900px;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.contact-card {
  text-align: center;
  padding: 2.5rem 2rem;
}

.contact-card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 20px var(--accent-glow));
  animation: float 3s ease-in-out infinite;
}

.contact-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.contact-card-text {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.contact-card-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  display: inline-block;
}

.contact-card-link:hover {
  text-decoration: underline;
  transform: scale(1.05);
}

.cta-card {
  text-align: center;
  padding: 3rem;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
  border: 2px solid var(--border-color);
}

.cta-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.cta-text {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.125rem;
  line-height: 1.8;
}

/* ========================================
   About Section
   ======================================== */
.about-card {
  padding: 3rem;
}

.about-text {
  font-size: 1.125rem;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.contact-info-item {
  padding: 1rem;
  background: rgba(0, 212, 255, 0.05);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.contact-info-item:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateX(5px);
}

.contact-info-item a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

.contact-info-item a:hover {
  text-decoration: underline;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

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

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

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 600;
}

.social-link:hover {
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 20px var(--accent-glow);
  font-size: 1.5rem;
  font-weight: bold;
}

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

.scroll-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 30px var(--accent-glow);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .image-wrapper {
    width: 300px;
    height: 300px;
    margin: 0 auto;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .scroll-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
  }
}

/* ========================================
   Utility Classes & Animations
   ======================================== */
[data-aos] {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"] {
  transform: translateY(30px);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

.project-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Enhanced Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

/* Smooth scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--gradient-from), var(--gradient-to));
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--accent-hover), var(--gradient-to));
}

/* Selection styling */
::selection {
  background: var(--accent-glow);
  color: white;
}