/* ==========================================================================
   Modern Portfolio Stylesheet - Premium Tech Profile
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Color Palette - Indigo/Cyan Deep Tech Theme */
  --bg-primary: #050511;
  --bg-secondary: #0A0A1A;
  --bg-surface: rgba(15, 15, 30, 0.6);
  --bg-elevated: rgba(25, 25, 50, 0.8);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #6366f1; /* Indigo */
  --accent-secondary: #22d3ee; /* Cyan */
  --accent-glow: rgba(99, 102, 241, 0.5);
  --accent-warm: #f59e0b;
  
  /* Utilities */
  --glass-border: 1px solid rgba(255, 255, 255, 0.08); /* More subtle */
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --section-padding: 120px 0;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* Account for fixed header */
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Glow & Particles */
.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  background: var(--bg-primary);
}
#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}
.ambient-glow {
  position: absolute;
  width: 80vw;
  height: 80vh;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 50%);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
  animation: float 25s infinite alternate ease-in-out;
}
.ambient-glow:nth-child(2) { top: -20vh; right: -20vw; }
.ambient-glow:nth-child(3) { bottom: -20vh; left: -10vw; background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 50%); animation-duration: 30s; animation-direction: alternate-reverse; }

/* Layout & Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--section-padding);
  position: relative;
}

/* Typography Helpers */
.gradient-text {
  background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.gradient-accent {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.font-mono {
  font-family: 'JetBrains Mono', monospace;
}

/* Header & Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-smooth);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(5, 5, 17, 0.6);
  border-bottom: 1px solid transparent; /* initially no border */
}
.navbar.scrolled {
  padding: 15px 0;
  border-bottom: var(--glass-border);
  box-shadow: var(--glass-shadow);
  background: rgba(5, 5, 17, 0.85);
}
.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo span {
  color: var(--accent-secondary);
}
.nav-links {
  display: flex;
  gap: 30px;
}
.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transition: var(--transition-smooth);
  border-radius: 2px;
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}
.hero-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-weight: 400;
}
.typewriter-text {
  color: var(--accent-secondary);
  font-weight: 600;
  border-right: 2px solid var(--accent-secondary);
  animation: blink 0.75s step-end infinite;
}
.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 40px;
}
.stats-row {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 32px;
  border-left: 2px solid var(--accent-primary);
  padding-left: 20px;
}
.hero-lang-social {
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-languages {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-left: 8px;
  border-left: 1px solid rgba(255,255,255,0.1);
}
.hero-lang-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-lang-item .fi {
  width: 1.2em;
  border-radius: 2px;
  flex-shrink: 0;
}
.hero-social {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-number {
  font-size: 2rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--text-primary);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.btn-group {
  display: flex;
  gap: 20px;
}
.btn {
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  border: none;
  font-family: 'Inter', sans-serif;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
}
.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: var(--glass-border);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: var(--bg-elevated);
  transform: translateY(-2px);
}
.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 15px;
  background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
  border: var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--glass-shadow);
  transform: translateY(0);
  animation: floatImage 8s infinite ease-in-out;
}
.hero-image {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
  display: block;
}

/* Glass Cards */
.glass-card {
  background: var(--bg-surface);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}
.glass-card:hover {
  transform: translateY(-8px);
  background: var(--bg-elevated);
  box-shadow: var(--glass-shadow);
}
.glass-card:hover::before {
  transform: translateX(100%);
}

/* Tag Container */
.tag-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.tag {
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-secondary);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(34, 211, 238, 0.2);
  transition: var(--transition-smooth);
}
.tag:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(34, 211, 238, 0.5);
}

/* Section Typography */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 15px;
}
.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Expertise Section */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}
.expertise-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
  font-size: 1.8rem;
  transition: var(--transition-smooth);
}
.glass-card:hover .expertise-icon {
  transform: scale(1.1);
}
.icon-indigo {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-primary);
}
.icon-cyan {
  background: rgba(34, 211, 238, 0.15);
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--accent-secondary);
}
.expert-title {
  font-size: 1.4rem;
  font-family: 'Outfit', sans-serif;
  margin-bottom: 15px;
  color: var(--text-primary);
}
.expert-desc {
  color: var(--text-secondary);
  margin-bottom: 25px;
  font-size: 0.95rem;
}

/* Stack / Tech Grid Section */
.tech-stack-wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.tech-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: var(--bg-surface);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: var(--transition-smooth);
}
.tech-item:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}
.tech-item i {
  font-size: 1.2rem;
  color: var(--accent-secondary);
}

/* Experience Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  height: 100%;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--glass-border), transparent);
}
.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 60px;
}
.timeline-item:last-child {
  margin-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: 21px;
  top: 5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--text-muted);
  z-index: 2;
  transition: var(--transition-smooth);
}
.timeline-item.active .timeline-dot {
  border-color: var(--accent-warm);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.5);
}
.timeline-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 8px;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
}
.timeline-item.active .timeline-date {
  color: var(--accent-warm);
}
.timeline-content h3 {
  font-size: 1.4rem;
  margin-bottom: 5px;
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
}
.timeline-content h4 {
  font-size: 1rem;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 15px;
}
.timeline-bulltes {
  list-style: none;
  margin-bottom: 20px;
}
.timeline-bulltes li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.timeline-bulltes li::before {
  content: '•';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-secondary);
  font-weight: bold;
}
.timeline-tech-context {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px dashed rgba(255,255,255,0.1);
  font-size: 0.9rem;
  color: var(--text-muted);
}
.timeline-tech-context strong {
  color: var(--text-primary);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
}
.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  padding: 20px;
}
.project-img-wrapper {
  height: 200px;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  background: rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}
.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.project-img.contain {
  object-fit: contain;
  padding: 20px;
}
.project-card:hover .project-img {
  transform: scale(1.05);
}
.project-content {
  padding: 0 10px 10px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.project-title {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: 10px;
  transition: color 0.3s ease;
  font-family: 'Outfit', sans-serif;
}
.project-card:hover .project-title {
  color: var(--accent-secondary);
}
.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* Contact Form */
.contact-container {
  max-width: 700px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: 25px;
}
.form-label {
  display: block;
  margin-bottom: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.form-control {
  width: 100%;
  background: rgba(10, 10, 24, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 15px 20px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  transition: var(--transition-smooth);
}
.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
  background: rgba(10, 10, 24, 0.8);
}
textarea.form-control {
  resize: vertical;
  min-height: 150px;
}
.contact-alternative {
  text-align: center;
  margin-top: 60px;
}

/* Footer */
.footer {
  border-top: var(--glass-border);
  padding: 40px 0;
  text-align: center;
  background: rgba(5, 5, 17, 0.8);
  backdrop-filter: blur(10px);
}
.social-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
}
.social-link {
  color: var(--text-secondary);
  font-size: 1.5rem;
  transition: var(--transition-smooth);
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  text-decoration: none;
}
.social-link:hover {
  color: var(--accent-secondary);
  transform: translateY(-3px);
  background: rgba(255,255,255,0.1);
  border-color: var(--accent-secondary);
}
.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-nav {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 20px;
}
.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}
.footer-nav a:hover {
  color: var(--accent-secondary);
}

/* Animations */
@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, 5%) scale(1.05); }
  100% { transform: translate(-5%, -5%) scale(0.95); }
}
@keyframes floatImage {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}
@keyframes blink {
  50% { border-color: transparent; }
}
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Privacy Policy Layout Specifics */
.policy-card {
  max-width: 800px;
  margin: 0 auto;
  color: var(--text-secondary);
}
.policy-card h1 {
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 2.5rem;
  margin-bottom: 5px;
}
.policy-card h2 {
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  margin-top: 30px;
  margin-bottom: 15px;
}
.policy-card h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.policy-card p, .policy-card ul {
  margin-bottom: 20px;
}
.policy-card ul {
  padding-left: 20px;
}
.policy-card li {
  margin-bottom: 10px;
}

/* Responsive Design */
@media (max-width: 991px) {
  .hero-wrapper {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-description {
    margin: 0 auto 40px;
  }
  .stats-row {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    border-left: none;
    padding-left: 0;
  }
  .hero-lang-social {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  .hero-languages {
    flex-direction: row;
    gap: 10px;
  }
  .hero-social {
    flex-direction: row;
    gap: 10px;
  }
  .btn-group {
    justify-content: center;
  }
  .hero-image-wrapper {
    max-width: 450px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.8rem;
  }
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .timeline::before {
    left: 20px;
  }
  .timeline-item {
    padding-left: 60px;
  }
  .timeline-dot {
    left: 11px;
  }
}

/* Mobile Nav Toggle */
.mobile-nav-active .nav-links {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: rgba(5, 5, 17, 0.98);
  backdrop-filter: blur(20px);
  padding: 30px;
  border-bottom: var(--glass-border);
  box-shadow: var(--glass-shadow);
  text-align: center;
}
.mobile-menu-btn {
  display: none;
}
@media (max-width: 768px) {
  .mobile-menu-btn { display: block; }
}