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

:root {
  --bg-dark:       #050811;
  --bg-card:       rgba(15, 20, 40, 0.7);
  --bg-card-hover: rgba(20, 28, 58, 0.85);
  --accent:        #7c3aed;
  --accent-2:      #06b6d4;
  --accent-glow:   rgba(124, 58, 237, 0.4);
  --accent-2-glow: rgba(6, 182, 212, 0.3);
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #475569;
  --border:        rgba(124, 58, 237, 0.2);
  --border-hover:  rgba(124, 58, 237, 0.6);
  --success:       #10b981;
  --warning:       #f59e0b;
  --font-main:     'Inter', sans-serif;
  --font-code:     'Fira Code', monospace;
  --nav-h:         70px;
  --radius:        16px;
  --radius-sm:     10px;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
  cursor: none;
}

/* ═══════════════════════════════════════════════
   CUSTOM CURSOR
═══════════════════════════════════════════════ */
.cursor {
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s, width 0.2s, height 0.2s, background 0.2s;
  mix-blend-mode: difference;
}
.cursor-follower {
  width: 36px; height: 36px;
  border: 2px solid rgba(124, 58, 237, 0.5);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: all 0.15s ease;
}
.cursor.active { width: 20px; height: 20px; background: var(--accent-2); }
.cursor-follower.active {
  width: 50px; height: 50px;
  border-color: rgba(6, 182, 212, 0.4);
  background: rgba(6, 182, 212, 0.05);
}

/* ═══════════════════════════════════════════════
   PARTICLE CANVAS
═══════════════════════════════════════════════ */
#particle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════
   SCROLLBAR
═══════════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent), var(--accent-2));
  border-radius: 3px;
}

/* ═══════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  z-index: 1000;
  transition: all var(--transition);
  backdrop-filter: blur(0px);
}
#navbar.scrolled {
  background: rgba(5, 8, 17, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-logo {
  font-family: var(--font-code);
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
}
.logo-bracket { opacity: 0.6; }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  transition: color var(--transition);
  letter-spacing: 0.05em;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ═══════════════════════════════════════════════
   SECTIONS BASE
═══════════════════════════════════════════════ */
section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 5%;
}
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--accent-2);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 50px;
  background: rgba(6, 182, 212, 0.05);
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary) 40%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.section-subtitle {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--nav-h) 5% 0;
  gap: 3rem;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
#hero::before {
  content: '';
  position: absolute;
  top: -200px; left: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: pulse-bg 6s ease-in-out infinite alternate;
}
#hero::after {
  content: '';
  position: absolute;
  bottom: -100px; right: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(6,182,212,0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: pulse-bg 8s ease-in-out infinite alternate-reverse;
}
@keyframes pulse-bg {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(1.2); opacity: 1; }
}

.hero-content {
  flex: 1;
  max-width: 580px;
  position: relative;
  z-index: 2;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease both;
}
.tag-dot {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.hero-title {
  display: flex;
  flex-direction: column;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 1.2rem;
  animation: fadeInDown 0.8s 0.1s ease both;
}
.hero-greeting {
  font-size: 0.45em;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 0.2rem;
  letter-spacing: 0.1em;
}
.hero-name {
  background: linear-gradient(135deg, #f1f5f9 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-name.accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-typed-wrapper {
  font-family: var(--font-code);
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--accent-2);
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s 0.2s ease both;
}
.typed-prefix { color: var(--text-secondary); }
.typed-text { color: var(--accent-2); }
.typed-cursor {
  animation: blink-cursor 0.8s step-end infinite;
  color: var(--accent);
}
@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
  animation: fadeInDown 0.8s 0.3s ease both;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  animation: fadeInDown 0.8s 0.4s ease both;
  flex-wrap: wrap;
}
.btn {
  padding: 0.85rem 2.2rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  transform: translateX(-100%) skewX(-15deg);
  transition: transform 0.4s ease;
}
.btn:hover::before { transform: translateX(200%) skewX(-15deg); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}
.btn-ghost {
  border: 2px solid var(--border-hover);
  color: var(--text-primary);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--accent);
  background: rgba(124,58,237,0.1);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  gap: 1rem;
  animation: fadeInDown 0.8s 0.5s ease both;
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
  background: var(--bg-card);
  backdrop-filter: blur(10px);
}
.social-link svg { width: 20px; height: 20px; }
.social-link:hover {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

/* Hero Visual – Code Window */
.hero-visual {
  flex: 1;
  max-width: 500px;
  position: relative;
  z-index: 2;
  animation: fadeInRight 1s 0.3s ease both;
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
.code-window {
  background: rgba(10, 15, 30, 0.9);
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(124,58,237,0.1);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.2rem;
  background: rgba(124,58,237,0.08);
  border-bottom: 1px solid rgba(124,58,237,0.15);
}
.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.window-title {
  margin-left: 0.5rem;
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.code-content {
  padding: 1.5rem;
  font-family: var(--font-code);
  font-size: 0.85rem;
  line-height: 1.8;
  overflow: auto;
}
.kw { color: #c792ea; }
.cls { color: #82aaff; }
.fn { color: #82aaff; }
.str { color: #c3e88d; }
.comment { color: #546e7a; font-style: italic; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  z-index: 2;
  animation: fadeIn 1.5s 1s ease both;
  cursor: pointer;
}
.mouse {
  width: 22px; height: 36px;
  border: 2px solid var(--text-muted);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.mouse-wheel {
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scroll-wheel 2s ease-in-out infinite;
}
@keyframes scroll-wheel {
  0% { transform: translateY(0); opacity: 1; }
  80% { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ═══════════════════════════════════════════════
   ABOUT SECTION
═══════════════════════════════════════════════ */
#about { background: linear-gradient(180deg, transparent 0%, rgba(124,58,237,0.03) 50%, transparent 100%); }

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-text p {
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 1.2rem;
  font-size: 1.02rem;
}
.about-text strong { color: var(--text-primary); }

.about-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.2rem 1.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 80px;
  transition: all var(--transition);
}
.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(124,58,237,0.15);
}
.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.detail-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.detail-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}
.detail-icon { font-size: 1.1rem; width: 28px; text-align: center; }
.detail-info { display: flex; flex-direction: column; gap: 0.1rem; overflow: hidden; }
.detail-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.detail-value {
  font-size: 0.88rem;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition);
}
a.detail-value:hover { color: var(--accent-2); }

.lang-section {
  margin-top: 0.5rem;
  padding: 1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.lang-section h4 {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
}
.lang-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
}
.lang-item + .lang-item { border-top: 1px solid rgba(255,255,255,0.05); }
.lang-name { font-size: 0.9rem; color: var(--text-primary); }
.lang-level {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
}
.lang-level.native { background: rgba(124,58,237,0.2); color: var(--accent); }
.lang-level.advanced { background: rgba(6,182,212,0.15); color: var(--accent-2); }

/* ═══════════════════════════════════════════════
   SKILLS SECTION
═══════════════════════════════════════════════ */
#skills { position: relative; }
#skills::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(6,182,212,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.skill-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  background: var(--bg-card);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.05), rgba(6,182,212,0.05));
  opacity: 0;
  transition: opacity var(--transition);
}
.skill-item:hover { border-color: var(--border-hover); transform: translateY(-3px); box-shadow: 0 10px 30px rgba(124,58,237,0.1); }
.skill-item:hover::before { opacity: 1; }

.skill-icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(124,58,237,0.15);
  color: var(--accent);
  flex-shrink: 0;
}
.skill-icon svg { width: 24px; height: 24px; }
.skill-icon.cpp  { background: rgba(0,89,167,0.2); color: #4d9de0; }
.skill-icon.mobile { background: rgba(6,182,212,0.15); color: var(--accent-2); }
.skill-icon.sql { background: rgba(249,115,22,0.15); color: #f97316; }
.skill-icon.csharp { background: rgba(104,33,122,0.2); color: #a855f7; }
.skill-icon.java { background: rgba(239,68,68,0.15); color: #ef4444; }
.skill-icon.web { background: rgba(234,179,8,0.15); color: #eab308; }
.skill-icon.ml { background: rgba(16,185,129,0.15); color: #10b981; }

.skill-info { flex: 1; min-width: 0; }
.skill-header { display: flex; justify-content: space-between; margin-bottom: 0.6rem; }
.skill-name { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.skill-level {
  font-size: 0.72rem;
  color: var(--accent-2);
  font-family: var(--font-code);
  background: rgba(6,182,212,0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 50px;
}
.skill-bar {
  height: 5px;
  background: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  width: 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ═══════════════════════════════════════════════
   PROJECTS SECTION
═══════════════════════════════════════════════ */
#projects { background: linear-gradient(180deg, transparent, rgba(124,58,237,0.03), transparent); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.project-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--border-hover); box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 20px rgba(124,58,237,0.1); }
.project-card:hover::after { transform: scaleX(1); }

.project-card.featured {
  grid-column: span 2;
  flex-direction: row;
  align-items: flex-start;
  gap: 2rem;
  border-color: rgba(124,58,237,0.4);
  background: linear-gradient(135deg, rgba(15,20,40,0.8), rgba(124,58,237,0.05));
}
.project-card.featured .project-name { font-size: 1.4rem; }
.project-card.featured .project-desc { font-size: 1rem; }

.project-tag-featured {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(124,58,237,0.15);
  border: 1px solid rgba(124,58,237,0.3);
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-header { display: flex; justify-content: space-between; align-items: flex-start; }
.project-icon-big { font-size: 2.5rem; }
.project-links { display: flex; gap: 0.5rem; }
.project-links a {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
}
.project-links a svg { width: 18px; height: 18px; }
.project-links a:hover { color: var(--text-primary); border-color: var(--accent); background: rgba(124,58,237,0.1); }

.project-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}
.project-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  flex: 1;
}
.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}
.project-tech span {
  font-size: 0.75rem;
  font-family: var(--font-code);
  color: var(--accent-2);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.2);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* ═══════════════════════════════════════════════
   EXPERIENCE SECTION (TIMELINE)
═══════════════════════════════════════════════ */
#experience { background: rgba(0,0,0,0.15); }

.timeline { display: flex; flex-direction: column; gap: 3rem; }
.timeline-category { position: relative; }
.timeline-cat-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.cat-icon { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }

.timeline-item {
  display: flex;
  gap: 2rem;
  position: relative;
  padding-left: 2rem;
}
.timeline-item + .timeline-item { margin-top: 1.5rem; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 32px;
  bottom: -1rem;
  width: 2px;
  background: linear-gradient(var(--accent), transparent);
}
.timeline-item:last-child::before { display: none; }

.timeline-dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-dark);
  box-shadow: 0 0 0 3px var(--accent-glow), 0 0 15px var(--accent-glow);
  flex-shrink: 0;
}
.timeline-dot.edu {
  background: var(--accent-2);
  box-shadow: 0 0 0 3px var(--accent-2-glow), 0 0 15px var(--accent-2-glow);
}
.timeline-dot.volunteer {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.3), 0 0 15px rgba(16,185,129,0.2);
}

.timeline-content {
  flex: 1;
  padding: 1.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.timeline-content:hover { border-color: var(--border-hover); transform: translateX(4px); }

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.timeline-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}
.timeline-company {
  font-size: 0.85rem;
  color: var(--accent-2);
  font-weight: 500;
}
.timeline-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 0.2rem; flex-shrink: 0; }
.timeline-date {
  font-family: var(--font-code);
  font-size: 0.8rem;
  color: var(--accent);
  white-space: nowrap;
}
.timeline-loc {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: right;
}

.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.timeline-bullets li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 1.2rem;
  position: relative;
}
.timeline-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
  top: 0.15em;
}
.timeline-bullets li strong { color: var(--text-primary); }

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.timeline-tags span {
  font-size: 0.73rem;
  font-family: var(--font-code);
  color: var(--accent);
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.2);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

/* ═══════════════════════════════════════════════
   CONTACT SECTION
═══════════════════════════════════════════════ */
#contact {
  background: linear-gradient(180deg, transparent, rgba(124,58,237,0.05));
  text-align: center;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  max-width: 900px;
  margin: 0 auto;
}
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding: 2rem 1.2rem;
  background: var(--bg-card);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(6,182,212,0.05));
  opacity: 0;
  transition: opacity var(--transition);
}
.contact-card:hover { transform: translateY(-6px); border-color: var(--border-hover); box-shadow: 0 20px 40px rgba(0,0,0,0.2), 0 0 20px rgba(124,58,237,0.1); }
.contact-card:hover::before { opacity: 1; }
.contact-icon {
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(124,58,237,0.2), rgba(6,182,212,0.1));
  color: var(--accent);
  position: relative;
}
.contact-icon svg { width: 24px; height: 24px; }
.contact-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.contact-value {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.4;
  transition: color var(--transition);
  word-break: break-all;
}
.contact-card:hover .contact-value { color: var(--text-primary); }

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
footer {
  position: relative;
  z-index: 1;
  padding: 3rem 5%;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-logo {
  font-family: var(--font-code);
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.8rem;
}
.footer-text { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 0.3rem; }
.footer-copy { color: var(--text-muted); font-size: 0.8rem; }

/* ═══════════════════════════════════════════════
   ANIMATIONS HELPERS
═══════════════════════════════════════════════ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* Delay utilities */
.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.2s !important; }
.delay-3 { transition-delay: 0.3s !important; }
.delay-4 { transition-delay: 0.4s !important; }
.delay-5 { transition-delay: 0.5s !important; }

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 900px) {
  #hero { flex-direction: column; text-align: center; padding-top: calc(var(--nav-h) + 2rem); }
  .hero-buttons, .hero-socials { justify-content: center; }
  .hero-visual { width: 100%; max-width: 100%; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { flex-direction: column; grid-column: span 1; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    padding: 1.5rem;
    background: rgba(5,8,17,0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    gap: 1.2rem;
    z-index: 999;
  }
  .contact-grid { grid-template-columns: 1fr; }
  .timeline-header { flex-direction: column; gap: 0.5rem; }
  .timeline-meta { align-items: flex-start; }
}