/* ===== ROOT VARIABLES ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #1e1e35;
  --accent-primary: #6c63ff;
  --accent-secondary: #f72585;
  --accent-tertiary: #4cc9f0;
  --accent-gradient: linear-gradient(135deg, #6c63ff 0%, #f72585 100%);
  --accent-gradient-2: linear-gradient(135deg, #4cc9f0 0%, #6c63ff 100%);
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6a6a8a;
  --border-color: #2a2a45;
  --shadow-card: 0 8px 32px rgba(108, 99, 255, 0.1);
  --shadow-glow: 0 0 30px rgba(108, 99, 255, 0.3);
  --nav-height: 70px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 16px;
  --font-mono: 'Courier New', Courier, monospace;
}

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

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

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: 3px;
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(108, 99, 255, 0.3);
  color: var(--text-primary);
}

/* ===== UTILITY ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 60px;
}

.section-divider {
  width: 80px;
  height: 4px;
  background: var(--accent-gradient);
  margin: 16px auto 20px;
  border-radius: 2px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-primary);
  border: 1px solid rgba(108, 99, 255, 0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ===== PRELOADER ===== */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 60px;
  height: 60px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-right-color: var(--accent-secondary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===== PARTICLES CANVAS ===== */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ===== CURSOR ===== */
.cursor {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-primary);
  position: fixed;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease, width 0.2s ease, height 0.2s ease, background 0.2s ease;
  mix-blend-mode: screen;
}

.cursor-follower {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(108, 99, 255, 0.5);
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, width 0.3s ease, height 0.3s ease;
}

@media (max-width: 768px) {
  .cursor, .cursor-follower { display: none; }
}

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-logo span {
  font-family: var(--font-mono);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.1);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 60%;
}

.nav-cta {
  padding: 8px 20px;
  background: var(--accent-gradient);
  color: white !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 99, 255, 0.5);
}

.nav-cta::after { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: var(--transition);
}

.hamburger:hover {
  background: rgba(108, 99, 255, 0.1);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== HERO SECTION ===== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(108, 99, 255, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(247, 37, 133, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, rgba(76, 201, 240, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
  animation: heroFadeIn 1s ease forwards;
}

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

.hero-greeting {
  font-family: var(--font-mono);
  color: var(--accent-tertiary);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 0.1em;
}

.hero-name {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 0%, #c8c8ff 50%, #f72585 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 2.2em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.typewriter {
  color: var(--accent-primary);
  font-weight: 600;
}

.cursor-blink {
  color: var(--accent-primary);
  animation: blink 1s step-end infinite;
}

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

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-location {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.hero-location svg {
  color: var(--accent-secondary);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn-primary {
  padding: 14px 32px;
  background: var(--accent-gradient);
  color: white;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(108, 99, 255, 0.6);
}

.btn-secondary {
  padding: 14px 32px;
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(108, 99, 255, 0.08);
  transform: translateY(-3px);
}

.hero-socials {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.social-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-icon:hover {
  background: rgba(108, 99, 255, 0.15);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(108, 99, 255, 0.2);
}

.social-icon svg {
  width: 20px;
  height: 20px;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounceDown 2s ease infinite;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 2px;
  animation: scrollWheel 1.5s ease infinite;
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(12px); }
}

@keyframes bounceDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===== ABOUT SECTION ===== */
#about {
  background: var(--bg-secondary);
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-image-container {
  position: relative;
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--bg-card) 0%, #0f0f2a 100%);
  border: 2px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
  overflow: hidden;
}

.about-image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0.05;
}

.about-avatar-icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.2);
  border: 3px solid rgba(108, 99, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.about-image-placeholder .name-initials {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.05em;
}

.about-badge {
  position: absolute;
  bottom: -16px;
  right: -16px;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-card);
}

.about-badge-icon {
  font-size: 1.5rem;
}

.about-badge-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.about-badge-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.about-decoration {
  position: absolute;
  top: -20px;
  left: -20px;
  width: 120px;
  height: 120px;
  border: 2px dashed rgba(108, 99, 255, 0.3);
  border-radius: 20px;
  animation: rotateSlow 20s linear infinite;
}

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

.about-content .badge {
  margin-bottom: 20px;
}

.about-content h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

.about-content h2 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

.about-info-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.info-item svg {
  color: var(--accent-primary);
  flex-shrink: 0;
}

/* ===== SKILLS SECTION ===== */
#skills {
  background: var(--bg-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 28px;
  transition: var(--transition);
}

.skill-category:hover {
  border-color: rgba(108, 99, 255, 0.4);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.skill-category-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(108, 99, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.skill-category-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-bar-item {
  margin-bottom: 18px;
}

.skill-bar-item:last-child {
  margin-bottom: 0;
}

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.skill-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-percent {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.skill-track {
  height: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--accent-gradient);
  width: 0%;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.skill-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

.tech-stack-title {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.tech-tag {
  padding: 8px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: default;
}

.tech-tag:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(108, 99, 255, 0.1);
  transform: translateY(-2px);
}

/* ===== EXPERIENCE SECTION ===== */
#experience {
  background: var(--bg-secondary);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) .timeline-card {
  grid-column: 1;
  text-align: right;
}

.timeline-item:nth-child(odd) .timeline-spacer {
  grid-column: 2;
}

.timeline-item:nth-child(odd) .timeline-empty {
  grid-column: 3;
}

.timeline-item:nth-child(even) .timeline-empty {
  grid-column: 1;
}

.timeline-item:nth-child(even) .timeline-spacer {
  grid-column: 2;
}

.timeline-item:nth-child(even) .timeline-card {
  grid-column: 3;
  text-align: left;
}

.timeline-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: 3px solid var(--bg-secondary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.2);
  z-index: 1;
  margin-top: 20px;
}

.timeline-spacer {
  position: relative;
  display: flex;
  justify-content: center;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 24px;
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: rgba(108, 99, 255, 0.4);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}

.timeline-header {
  margin-bottom: 12px;
}

.timeline-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-company {
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.timeline-period {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(108, 99, 255, 0.1);
  padding: 4px 10px;
  border-radius: 6px;
}

.timeline-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}

.timeline-item:nth-child(odd) .timeline-list li {
  flex-direction: row-reverse;
  text-align: right;
}

.timeline-list li::before {
  content: '▸';
  color: var(--accent-primary);
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.timeline-item:nth-child(odd) .timeline-list li::before {
  order: 1;
}

/* ===== PROJECTS SECTION ===== */
#projects {
  background: var(--bg-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.project-card:hover {
  border-color: rgba(108, 99, 255, 0.4);
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(108, 99, 255, 0.15);
}

.project-image {
  height: 200px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f0f2a 0%, #1a1a3e 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-image-icon {
  font-size: 4rem;
  opacity: 0.6;
  transition: var(--transition);
}

.project-card:hover .project-image-icon {
  opacity: 0.3;
  transform: scale(1.2);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 25, 0.9);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  opacity: 0;
  transition: var(--transition);
}

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

.overlay-btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
  border: none;
  cursor: pointer;
}

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

.overlay-btn.secondary {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
}

.overlay-btn:hover {
  transform: scale(1.05);
}

.project-content {
  padding: 24px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.project-tag {
  padding: 4px 10px;
  background: rgba(108, 99, 255, 0.1);
  color: var(--accent-primary);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(108, 99, 255, 0.2);
}

.project-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
  line-height: 1.4;
}

.project-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  gap: 12px;
}

.project-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.project-link:hover {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  background: rgba(108, 99, 255, 0.08);
}

/* ===== CERTIFICATIONS SECTION ===== */
#certifications {
  background: var(--bg-secondary);
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.cert-card:hover {
  border-color: rgba(108, 99, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.cert-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(108, 99, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.cert-card:hover .cert-icon-wrapper {
  background: rgba(108, 99, 255, 0.25);
  transform: rotate(5deg) scale(1.05);
}

.cert-content {
  flex: 1;
}

.cert-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.cert-issuer {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 600;
  margin-bottom: 8px;
}

.cert-year {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: 3px 8px;
  border-radius: 4px;
}

/* ===== CONTACT SECTION ===== */
#contact {
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

#contact::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 300px;
  background: radial-gradient(ellipse at center, rgba(108, 99, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
  position: relative;
}

.contact-info h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
  font-size: 1.05rem;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  flex-shrink: 0;
  transition: var(--transition);
}

.contact-item:hover .contact-item-icon {
  background: rgba(108, 99, 255, 0.2);
  transform: scale(1.1);
}

.contact-item-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-item-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.contact-item-value a {
  color: var(--text-primary);
  transition: var(--transition);
}

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

.contact-socials {
  display: flex;
  gap: 12px;
}

/* ===== CONTACT FORM ===== */
.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 36px;
}

.contact-form-wrapper h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
  resize: none;
}

.form-control:focus {
  border-color: var(--accent-primary);
  background: rgba(108, 99, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-submit {
  width: 100%;
  padding: 15px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.5);
}

.form-submit:active {
  transform: translateY(0);
}

.form-success {
  display: none;
  text-align: center;
  padding: 20px;
  background: rgba(76, 201, 76, 0.1);
  border: 1px solid rgba(76, 201, 76, 0.3);
  border-radius: 10px;
  color: #4cc97c;
  font-weight: 600;
  margin-top: 16px;
}

/* ===== FOOTER ===== */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* ===== BACK TO TOP BUTTON ===== */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border: none;
  border-radius: 12px;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.6);
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* staggered children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.3s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.35s; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.4s; opacity: 1; transform: none; }

/* ===== NOISE TEXTURE OVERLAY ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.015;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image-container {
    max-width: 280px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 40px 1fr;
  }

  .timeline-item:nth-child(odd) .timeline-card,
  .timeline-item:nth-child(even) .timeline-card {
    grid-column: 2;
    text-align: left;
  }

  .timeline-item:nth-child(odd) .timeline-spacer,
  .timeline-item:nth-child(even) .timeline-spacer {
    grid-column: 1;
  }

  .timeline-item:nth-child(odd) .timeline-empty,
  .timeline-item:nth-child(even) .timeline-empty {
    display: none;
  }

  .timeline-dot {
    left: 20px;
  }

  .timeline-item:nth-child(odd) .timeline-list li {
    flex-direction: row;
    text-align: left;
  }

  .timeline-item:nth-child(odd) .timeline-list li::before {
    order: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .section {
    padding: 70px 0;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: 12px 16px;
    border-radius: 10px;
    text-align: left;
  }

  .hamburger {
    display: flex;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-info-list {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .certs-grid {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: 24px;
  }

  #back-to-top {
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .about-stats {
    grid-template-columns: 1fr;
  }

  .tech-tags {
    gap: 8px;
  }
}

/* ===== GLOW ANIMATIONS ===== */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(108, 99, 255, 0.2); }
  50% { box-shadow: 0 0 40px rgba(108, 99, 255, 0.5); }
}

.glow-pulse {
  animation: pulse-glow 3s ease infinite;
}

/* ===== GRADIENT BORDER ===== */
.gradient-border {
  position: relative;
  border-radius: var(--border-radius);
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--border-radius) + 1px);
  background: var(--accent-gradient);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gradient-border:hover::before {
  opacity: 1;
}