/* ===========================
   ROOT VARIABLES & RESET
=========================== */
:root {
  --bg-primary: #050d1a;
  --bg-secondary: #0a1628;
  --bg-card: #0d1f35;
  --bg-card-hover: #112440;
  --accent-cyan: #00d4ff;
  --accent-purple: #7b2fff;
  --accent-green: #00ff88;
  --accent-orange: #ff6b35;
  --accent-gold: #ffd700;
  --text-primary: #e6f1ff;
  --text-secondary: #8892b0;
  --text-muted: #4a5568;
  --border-color: rgba(0, 212, 255, 0.15);
  --nav-height: 70px;
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'Fira Code', monospace;
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

/* ===========================
   SCROLLBAR
=========================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-cyan); border-radius: 3px; }

/* ===========================
   CURSOR
=========================== */
.cursor {
  width: 10px; height: 10px;
  background: var(--accent-cyan);
  border-radius: 50%;
  position: fixed; pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease;
}

.cursor-follower {
  width: 30px; height: 30px;
  border: 1.5px solid rgba(0, 212, 255, 0.5);
  border-radius: 50%;
  position: fixed; pointer-events: none; z-index: 9998;
  transform: translate(-50%, -50%);
  transition: all 0.15s ease;
}

/* ===========================
   PARTICLES BACKGROUND
=========================== */
#particles-bg {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
  overflow: hidden;
}

#particles-bg::before,
#particles-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  animation: float 8s ease-in-out infinite;
}

#particles-bg::before {
  width: 500px; height: 500px;
  background: var(--accent-cyan);
  top: -200px; left: -200px;
}

#particles-bg::after {
  width: 400px; height: 400px;
  background: var(--accent-purple);
  bottom: -150px; right: -150px;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 30px) scale(1.05); }
}

/* ===========================
   NAVBAR
=========================== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
  backdrop-filter: blur(0px);
}

#navbar.scrolled {
  background: rgba(5, 13, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px; margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem; font-weight: 600;
}
.logo-bracket { color: var(--accent-cyan); }
.logo-text { color: var(--text-primary); margin: 0 2px; }

.nav-links { display: flex; gap: 0.3rem; }

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
  transition: all var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
}

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

.hamburger span {
  display: block; width: 25px; height: 2px;
  background: var(--text-primary);
  transition: all var(--transition);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Menu */
.mobile-menu {
  position: fixed; top: var(--nav-height); left: 0; right: 0;
  background: rgba(5, 13, 26, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 999;
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition);
  pointer-events: none;
}

.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-menu ul { padding: 1rem; }
.mobile-link {
  display: block; padding: 0.8rem 1rem;
  font-family: var(--font-mono); font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: all var(--transition);
}
.mobile-link:hover { color: var(--accent-cyan); background: rgba(0, 212, 255, 0.08); }

/* ===========================
   HERO SECTION
=========================== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-height) + 2rem) 2rem 4rem;
  max-width: 1200px; margin: 0 auto;
  position: relative; z-index: 1;
  gap: 4rem;
}

.hero-content { flex: 1; max-width: 650px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: 100px;
  font-size: 0.8rem; font-family: var(--font-mono);
  color: var(--accent-green);
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.6s ease 0.2s both;
}

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

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,255,136,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(0,255,136,0); }
}

.hero-title {
  animation: fadeInDown 0.6s ease 0.3s both;
}

.greeting {
  display: block; font-size: 1.2rem;
  color: var(--accent-cyan); font-family: var(--font-mono);
  margin-bottom: 0.3rem;
}

.name {
  display: block;
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-roles {
  font-size: 1.3rem; margin: 1rem 0 1.5rem;
  color: var(--text-secondary);
  animation: fadeInDown 0.6s ease 0.4s both;
}

.role-static { color: var(--text-secondary); }
.role-dynamic { color: var(--accent-cyan); font-family: var(--font-mono); }
.cursor-blink { color: var(--accent-cyan); animation: blink 1s step-end infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-description {
  color: var(--text-secondary); margin-bottom: 2rem; line-height: 1.8;
  animation: fadeInDown 0.6s ease 0.5s both;
}
.hero-description strong { color: var(--text-primary); }

.hero-stats {
  display: flex; align-items: center; gap: 1.5rem;
  margin-bottom: 2rem;
  animation: fadeInDown 0.6s ease 0.6s both;
}

.stat-item { text-align: center; }
.stat-number {
  display: block; font-size: 1.8rem; font-weight: 800;
  color: var(--accent-cyan); font-family: var(--font-mono);
}
.stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.stat-divider { width: 1px; height: 40px; background: var(--border-color); }

.hero-buttons {
  display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2rem;
  animation: fadeInDown 0.6s ease 0.7s both;
}

.hero-socials {
  display: flex; gap: 1rem;
  animation: fadeInDown 0.6s ease 0.8s both;
}

.social-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: 8px; font-size: 1.1rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.social-icon:hover {
  color: var(--accent-cyan); border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
  transform: translateY(-3px);
}

/* Hero Visual / Code Card */
.hero-visual {
  flex: 0 0 auto;
  animation: fadeInRight 0.8s ease 0.5s both;
}

.code-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  min-width: 340px;
}

.code-header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border-color);
}

.dot {
  width: 12px; height: 12px; border-radius: 50%;
}
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.file-name {
  margin-left: 8px; font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--text-secondary);
}

.code-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  tab-size: 2;
}

.code-keyword { color: #c792ea; }
.code-pkg { color: var(--accent-cyan); }
.code-type { color: #82aaff; }
.code-func { color: #82b1ff; }
.code-string { color: var(--accent-green); }
.code-number { color: var(--accent-orange); }
.code-comment { color: #546e7a; font-style: italic; }

/* Scroll Indicator */
.scroll-indicator {
  position: absolute; bottom: 2rem;
  left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono);
  animation: fadeIn 1s ease 2s both;
}

.scroll-mouse {
  width: 24px; height: 36px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex; justify-content: center; padding-top: 6px;
}

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

@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(8px); opacity: 0; }
}

/* ===========================
   BUTTONS
=========================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: all var(--transition);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #0094b3);
  color: #050d1a;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--accent-cyan);
  color: var(--accent-cyan);
}
.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-lg { padding: 15px 36px; font-size: 1rem; }

/* ===========================
   SECTIONS
=========================== */
.section {
  padding: 6rem 0;
  position: relative; z-index: 1;
}

.section-alt { background: var(--bg-secondary); }

.container {
  max-width: 1200px; margin: 0 auto;
  padding: 0 2rem;
}

.section-header { text-align: center; margin-bottom: 3.5rem; }

.section-tag {
  font-family: var(--font-mono); font-size: 0.9rem;
  color: var(--accent-cyan); display: block;
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800; letter-spacing: -0.5px;
  position: relative; display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%);
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 2px;
}

/* ===========================
   ABOUT SECTION
=========================== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem;
  align-items: center;
}

.about-text p {
  color: var(--text-secondary); margin-bottom: 1.2rem; line-height: 1.85;
}
.about-text strong { color: var(--text-primary); }
.about-text em { color: var(--accent-cyan); font-style: normal; }

.about-highlights { margin-top: 1.5rem; display: flex; flex-direction: column; gap: 0.7rem; }
.highlight-item {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.9rem; color: var(--text-secondary);
}
.highlight-item i { color: var(--accent-cyan); width: 16px; text-align: center; }
.highlight-item a { color: var(--accent-cyan); }
.highlight-item a:hover { text-decoration: underline; }

.about-card-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 1.5rem;
  transition: all var(--transition);
}

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

.about-card-icon {
  width: 44px; height: 44px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--accent-cyan);
  margin-bottom: 0.8rem;
}

.about-card h4 { font-size: 0.95rem; margin-bottom: 0.4rem; }
.about-card p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* ===========================
   SKILLS SECTION
=========================== */
.skills-container { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 2rem;
  transition: all var(--transition);
}

.skill-category:hover {
  border-color: rgba(0, 212, 255, 0.3);
}

.skill-cat-title {
  font-size: 1rem; font-family: var(--font-mono);
  color: var(--accent-cyan); margin-bottom: 1.2rem;
  display: flex; align-items: center; gap: 10px;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.skill-tag {
  display: flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: 8px; font-size: 0.83rem;
  font-weight: 500; border: 1px solid;
  transition: all var(--transition); position: relative;
  cursor: default;
}

.skill-tag i { font-size: 1rem; }

.skill-tag.expert {
  background: rgba(0, 212, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.3);
  color: var(--accent-cyan);
}
.skill-tag.expert:hover {
  background: rgba(0, 212, 255, 0.15);
  transform: translateY(-2px);
}

.skill-tag.advanced {
  background: rgba(123, 47, 255, 0.08);
  border-color: rgba(123, 47, 255, 0.3);
  color: #a78bfa;
}
.skill-tag.advanced:hover {
  background: rgba(123, 47, 255, 0.15);
  transform: translateY(-2px);
}

.skill-tag.intermediate {
  background: rgba(0, 255, 136, 0.06);
  border-color: rgba(0, 255, 136, 0.25);
  color: var(--accent-green);
}
.skill-tag.intermediate:hover {
  background: rgba(0, 255, 136, 0.12);
  transform: translateY(-2px);
}

.skill-level {
  font-size: 0.7rem; opacity: 0.7;
  border-left: 1px solid currentColor;
  padding-left: 7px; margin-left: 3px;
}

/* ===========================
   EXPERIENCE / TIMELINE
=========================== */
.timeline { position: relative; }
.timeline::before {
  content: '';
  position: absolute; left: 28px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple), transparent);
}

.timeline-header {
  margin-bottom: 2.5rem;
}

.timeline-company {
  display: flex; align-items: flex-start; gap: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-left: 4.5rem;
}

.company-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: white; flex-shrink: 0;
}

.company-info h3 { font-size: 1.3rem; margin-bottom: 4px; }
.company-name { color: var(--accent-cyan); font-size: 0.95rem; display: block; margin-bottom: 4px; }
.job-period {
  font-family: var(--font-mono); font-size: 0.82rem;
  color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px;
}

.timeline-item { display: flex; gap: 1.5rem; margin-bottom: 2.5rem; position: relative; padding-left: 1rem; }

.timeline-dot {
  width: 16px; height: 16px; flex-shrink: 0;
  background: var(--accent-cyan);
  border: 3px solid var(--bg-primary);
  border-radius: 50%; margin-top: 1.5rem;
  position: relative; z-index: 1;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
}

.timeline-content {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 2rem;
  transition: all var(--transition);
}

.timeline-content:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-glow);
}

.project-header {
  display: flex; align-items: flex-start; gap: 1.2rem; margin-bottom: 1.2rem;
}

.project-icon {
  width: 46px; height: 46px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.project-icon.cloud { background: rgba(0, 212, 255, 0.15); color: var(--accent-cyan); }
.project-icon.network { background: rgba(0, 255, 136, 0.12); color: var(--accent-green); }
.project-icon.proxy { background: rgba(123, 47, 255, 0.12); color: #a78bfa; }

.project-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }

.project-tech-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tech-badge {
  font-family: var(--font-mono); font-size: 0.75rem;
  padding: 3px 10px; border-radius: 100px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--accent-cyan);
}

.project-bullets { display: flex; flex-direction: column; gap: 0.75rem; }
.project-bullets li {
  display: flex; gap: 10px;
  color: var(--text-secondary); font-size: 0.92rem; line-height: 1.75;
}
.project-bullets li i { color: var(--accent-cyan); margin-top: 6px; flex-shrink: 0; font-size: 0.7rem; }
.project-bullets strong { color: var(--text-primary); }

.achievement-badge {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 1rem; padding: 8px 16px;
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: 100px; font-size: 0.85rem;
  color: var(--accent-green);
}

/* ===========================
   OPEN SOURCE SECTION
=========================== */
.os-intro { text-align: center; max-width: 650px; margin: -1.5rem auto 3rem; }
.os-intro p { color: var(--text-secondary); font-size: 1.05rem; }
.os-intro strong { color: var(--text-primary); }

.os-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.os-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 1.8rem;
  transition: all var(--transition); position: relative;
  display: flex; flex-direction: column; gap: 0.8rem;
}

.os-card:hover {
  border-color: rgba(0, 212, 255, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.os-card-maintainer {
  border-color: rgba(255, 215, 0, 0.3);
  background: linear-gradient(135deg, var(--bg-card), rgba(255, 215, 0, 0.03));
}
.os-card-maintainer:hover { border-color: rgba(255, 215, 0, 0.5); }

.maintainer-badge {
  position: absolute; top: -10px; right: 16px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 100px; font-size: 0.75rem;
  background: rgba(255, 215, 0, 0.15);
  border: 1px solid rgba(255, 215, 0, 0.4);
  color: var(--accent-gold);
}

.os-card-header { display: flex; align-items: flex-start; gap: 12px; }
.os-icon { font-size: 1.6rem; color: var(--text-secondary); flex-shrink: 0; margin-top: 3px; }
.os-card-header h4 { font-size: 0.95rem; margin-bottom: 4px; font-family: var(--font-mono); }
.pr-number { font-size: 0.8rem; color: var(--accent-cyan); font-family: var(--font-mono); }
.os-card > p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.65; flex: 1; }
.os-card code { font-family: var(--font-mono); font-size: 0.85em; color: var(--accent-cyan); }

.os-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.83rem; color: var(--accent-cyan);
  font-family: var(--font-mono);
  transition: gap var(--transition);
}
.os-link:hover { gap: 10px; }

/* ===========================
   COMPETITIVE PROGRAMMING
=========================== */
.cp-intro { text-align: center; max-width: 650px; margin: -1.5rem auto 3rem; }
.cp-intro p { color: var(--text-secondary); font-size: 1.05rem; }
.cp-intro strong { color: var(--text-primary); }

.cp-platforms {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem; margin-bottom: 3rem;
}

.cp-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 2rem 1.5rem;
  text-align: center; text-decoration: none;
  transition: all var(--transition);
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
}

.cp-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.cp-card.cf:hover { border-color: #1F8ACB; box-shadow: 0 12px 30px rgba(31,138,203,0.2); }
.cp-card.lc:hover { border-color: #FFA116; box-shadow: 0 12px 30px rgba(255,161,22,0.2); }
.cp-card.cc:hover { border-color: #5B4638; box-shadow: 0 12px 30px rgba(91,70,56,0.2); }
.cp-card.ac:hover { border-color: #2ea9df; box-shadow: 0 12px 30px rgba(46,169,223,0.2); }

.cp-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; }
.cp-icon img { max-width: 50px; max-height: 50px; object-fit: contain; }
.cp-icon-fallback { width: 56px; height: 56px; align-items: center; justify-content: center; border-radius: 12px;
  background: rgba(0,212,255,0.1); font-size: 1.5rem; color: var(--accent-cyan); }

.cp-info h4 { font-size: 1rem; margin-bottom: 0.3rem; }
.cp-rating {
  font-family: var(--font-mono); font-size: 2rem; font-weight: 800;
  color: var(--accent-cyan); line-height: 1;
}
.cp-title-badge {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  font-size: 0.78rem; font-weight: 600; margin: 0.4rem 0;
}
.cp-title-badge.master { background: rgba(255,140,0,0.15); color: #ff8c00; border: 1px solid rgba(255,140,0,0.3); }
.cp-title-badge.guardian { background: rgba(255,215,0,0.12); color: var(--accent-gold); border: 1px solid rgba(255,215,0,0.3); }
.cp-title-badge.six-star { background: rgba(255,69,0,0.12); color: #ff6347; border: 1px solid rgba(255,69,0,0.3); }
.cp-title-badge.atcoder { background: rgba(0,212,255,0.1); color: var(--accent-cyan); border: 1px solid var(--border-color); }
.cp-rank { font-size: 0.8rem; color: var(--text-muted); }

/* Achievements */
.cp-achievements { margin-top: 1rem; }
.cp-achievements h3 { font-size: 1.3rem; margin-bottom: 1.5rem; text-align: center; }

.achievements-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 1.8rem;
  display: flex; align-items: flex-start; gap: 1.2rem;
  transition: all var(--transition);
}

.achievement-card:hover { transform: translateY(-4px); }
.achievement-card.gold { border-left: 3px solid var(--accent-gold); }
.achievement-card.silver { border-left: 3px solid #C0C0C0; }
.achievement-card.bronze { border-left: 3px solid #CD7F32; }

.ach-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}

.achievement-card.gold .ach-icon { background: rgba(255,215,0,0.1); color: var(--accent-gold); }
.achievement-card.silver .ach-icon { background: rgba(192,192,192,0.1); color: #C0C0C0; }
.achievement-card.bronze .ach-icon { background: rgba(205,127,50,0.1); color: #CD7F32; }

.ach-content h4 { font-size: 0.95rem; margin-bottom: 0.5rem; }
.ach-content p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.3rem; line-height: 1.6; }
.ach-content strong { color: var(--text-primary); }

.cert-link { color: var(--accent-cyan); font-size: 0.82rem; }
.cert-link:hover { text-decoration: underline; }

/* ===========================
   EDUCATION SECTION
=========================== */
.education-card {
  display: flex; align-items: flex-start; gap: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 2.5rem;
  max-width: 800px; margin: 0 auto;
  transition: all var(--transition);
}

.education-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-glow);
}

.edu-icon {
  width: 64px; height: 64px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: white;
}

.edu-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 0.6rem; flex-wrap: wrap; gap: 0.5rem;
}

.edu-content h3 { font-size: 1.25rem; }

.edu-period {
  font-family: var(--font-mono); font-size: 0.82rem;
  color: var(--accent-cyan); padding: 4px 10px;
  background: rgba(0,212,255,0.08); border-radius: 100px;
  border: 1px solid rgba(0,212,255,0.2);
}

.edu-institution {
  color: var(--text-secondary); font-size: 0.92rem;
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 1.2rem;
}
.edu-institution i { color: var(--accent-cyan); }

.edu-cgpa {
  display: inline-flex; align-items: baseline; gap: 4px;
  margin-bottom: 1.2rem;
}
.cgpa-label {
  font-size: 0.8rem; color: var(--text-muted);
  font-family: var(--font-mono); text-transform: uppercase;
  letter-spacing: 1px; margin-right: 4px;
}
.cgpa-value {
  font-size: 2rem; font-weight: 800;
  color: var(--accent-cyan); font-family: var(--font-mono);
}
.cgpa-max { color: var(--text-muted); font-size: 1rem; }

.edu-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.edu-tag {
  font-size: 0.8rem; padding: 5px 12px; border-radius: 100px;
  background: rgba(123, 47, 255, 0.08);
  border: 1px solid rgba(123, 47, 255, 0.2);
  color: #a78bfa;
}

/* ===========================
   CONTACT SECTION
=========================== */
.contact-intro {
  text-align: center; max-width: 600px; margin: 0 auto 3rem;
  color: var(--text-secondary); font-size: 1.05rem; line-height: 1.8;
}

.contact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem; margin-bottom: 3rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius); padding: 2rem;
  text-align: center; text-decoration: none;
  transition: all var(--transition); cursor: pointer;
}

.contact-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.35);
  box-shadow: var(--shadow-glow);
}

.contact-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin: 0 auto 1rem;
}
.email-icon { background: rgba(255, 107, 53, 0.12); color: var(--accent-orange); }
.linkedin-icon { background: rgba(0, 119, 181, 0.12); color: #0A96D4; }
.github-icon { background: rgba(255,255,255,0.06); color: var(--text-primary); }
.phone-icon { background: rgba(0, 255, 136, 0.1); color: var(--accent-green); }

.contact-card h4 { font-size: 0.95rem; margin-bottom: 0.4rem; }
.contact-card p { font-size: 0.83rem; color: var(--text-secondary); word-break: break-all; }

.contact-cta { text-align: center; }

/* ===========================
   FOOTER
=========================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  position: relative; z-index: 1;
}

.footer-container {
  max-width: 1200px; margin: 0 auto; padding: 0 2rem;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
}

.footer-logo { font-family: var(--font-mono); font-size: 1.2rem; font-weight: 600; }
.footer-text { color: var(--text-muted); font-size: 0.9rem; }
.footer-text strong { color: var(--text-secondary); }

.footer-socials { display: flex; gap: 1rem; }
.footer-socials a {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-color); border-radius: 8px;
  font-size: 1rem; color: var(--text-muted);
  transition: all var(--transition);
}
.footer-socials a:hover {
  color: var(--accent-cyan); border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
}

.footer-copy { font-size: 0.8rem; color: var(--text-muted); }

/* Back to Top */
.back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--accent-cyan); color: #050d1a;
  border: none; border-radius: 10px; font-size: 1.1rem;
  cursor: pointer; z-index: 100;
  transition: all var(--transition);
  opacity: 0; pointer-events: none;
  display: flex; align-items: center; justify-content: center;
}

.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0, 212, 255, 0.4); }

/* ===========================
   ANIMATIONS
=========================== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1100px) {
  .cp-platforms { grid-template-columns: repeat(2, 1fr); }
  .achievements-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .skills-container { grid-template-columns: 1fr; }
  .hero { flex-direction: column; text-align: center; padding-top: 8rem; }
  .hero-content { max-width: 100%; }
  .hero-stats { justify-content: center; }
  .hero-buttons { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-visual { display: none; }
  .scroll-indicator { display: none; }
  .timeline::before { left: 12px; }
  .timeline-dot { display: none; }
  .timeline-item { padding-left: 0; }
  .timeline-company { margin-left: 0; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .cp-platforms { grid-template-columns: 1fr 1fr; }
  .about-card-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 4rem 0; }
}

@media (max-width: 480px) {
  .cp-platforms { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1rem; }
  .stat-number { font-size: 1.4rem; }
  .education-card { flex-direction: column; }
}