/* ============================================================
   ERICK COLIER - PORTFOLIO CSS
   ============================================================ */

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

:root {
  --bg:        #0b0f1a;
  --bg-alt:    #111827;
  --card:      #161d2e;
  --card-hover:#1c2540;
  --border:    rgba(255,255,255,0.07);
  --accent:    #f97316;
  --accent2:   #3b82f6;
  --accent-glow: rgba(249,115,22,0.25);
  --text:      #f1f5f9;
  --text-muted:#94a3b8;
  --text-dim:  #64748b;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  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); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 2rem;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(11,15,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text);
}
.nav-logo span { color: var(--accent); }

.nav-menu {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.nav-link {
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text); background: var(--border); }

.btn-nav {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 0.4rem 1.1rem !important;
}
.btn-nav:hover { background: #ea6c0c !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 2rem;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(249,115,22,0.12) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 80%, rgba(59,130,246,0.08) 0%, transparent 50%),
              var(--bg);
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-greeting {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.3s forwards;
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.05;
  background: linear-gradient(135deg, #fff 0%, #f97316 60%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  animation: fadeUp 0.6s 0.5s forwards;
}

.hero-title-wrap {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  font-weight: 500;
  color: var(--text-muted);
  margin: 1rem 0 0.5rem;
  height: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  opacity: 0;
  animation: fadeUp 0.6s 0.7s forwards;
}

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

@keyframes blink { 50% { opacity: 0; } }

.hero-location {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.9s forwards;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s 1.1s forwards;
}

.hero-socials {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  opacity: 0;
  animation: fadeUp 0.6s 1.3s forwards;
}

.social-link {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}
.social-link svg { width: 18px; height: 18px; }
.social-link:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); transform: translateY(-2px); }

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 1s 2s forwards;
}

.scroll-mouse {
  width: 22px;
  height: 36px;
  border: 2px solid var(--text-dim);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.scroll-wheel {
  width: 3px;
  height: 6px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollAnim 2s infinite;
}

@keyframes scrollAnim {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.75rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(249,115,22,0.35);
}
.btn-primary:hover {
  background: #ea6c0c;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(249,115,22,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   SECTIONS
   ============================================================ */
.section { padding: 6rem 2rem; }
.section-alt { background: var(--bg-alt); }

.container {
  max-width: 1100px;
  margin: 0 auto;
}

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

.section-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text);
}
.section-title span { color: var(--accent); }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: start;
}

.about-avatar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.avatar-ring {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) 0deg, var(--accent2) 120deg, var(--accent) 240deg, var(--accent2) 360deg);
  padding: 3px;
  animation: rotateBorder 8s linear infinite;
}
.avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

@keyframes rotateBorder {
  from { filter: hue-rotate(0deg); }
  to   { filter: hue-rotate(360deg); }
}

.stats-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  text-align: center;
  min-width: 80px;
}
.stat-num {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.stat-lbl {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.3;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1rem;
}
.about-text strong { color: var(--text); }
.about-text em { color: var(--accent); font-style: normal; font-weight: 500; }

.about-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.about-pills span {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.about-pills span:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.skill-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transition: var(--transition);
}
.skill-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.skill-card:hover::before { opacity: 1; }

.skill-card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}
.skill-card ul { display: flex; flex-direction: column; gap: 0.5rem; }
.skill-card li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.soft-skills {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
}
.soft-skills h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text);
}
.soft-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.soft-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.soft-item:hover { border-color: var(--accent2); color: var(--accent2); }

.languages {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.languages h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
}
.lang-list { display: flex; flex-direction: column; gap: 1.25rem; }
.lang-item {}
.lang-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}
.lang-name { font-size: 0.9rem; font-weight: 600; color: var(--text); }
.lang-level { font-size: 0.8rem; color: var(--accent); }
.lang-bar {
  height: 6px;
  background: var(--bg-alt);
  border-radius: 3px;
  overflow: hidden;
}
.lang-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4,0,0.2,1);
}

/* ============================================================
   EXPERIENCE TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent2), transparent);
}

.tl-item {
  position: relative;
  padding-bottom: 2.5rem;
  padding-left: 2rem;
}
.tl-item:last-child { padding-bottom: 0; }

.tl-marker {
  position: absolute;
  left: -2rem;
  top: 4px;
}
.tl-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 3px rgba(249,115,22,0.3);
  margin-left: -6px;
}

.tl-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
  position: relative;
}
.tl-card:hover { border-color: rgba(249,115,22,0.4); transform: translateX(4px); box-shadow: var(--shadow); }

.tl-badge {
  display: inline-block;
  background: rgba(249,115,22,0.15);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(249,115,22,0.3);
  margin-bottom: 0.75rem;
}

.tl-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}
.tl-company {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.25rem;
}
.tl-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.tl-duties {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.tl-duties li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-left: 1rem;
  border-left: 2px solid var(--border);
  line-height: 1.6;
}
.tl-duties strong { color: var(--text); }

.tl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tl-tags span {
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  color: #60a5fa;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
}

/* ============================================================
   EDUCATION
   ============================================================ */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.edu-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: var(--transition);
}
.edu-card:hover { border-color: rgba(249,115,22,0.4); transform: translateY(-3px); box-shadow: var(--shadow); }

.edu-card.featured {
  border-color: rgba(249,115,22,0.5);
  background: linear-gradient(135deg, var(--card), rgba(249,115,22,0.06));
  grid-column: span 2;
}

.edu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.edu-icon-wrap {
  font-size: 2rem;
  line-height: 1;
}
.edu-badge-featured {
  background: rgba(249,115,22,0.15);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(249,115,22,0.3);
}

.edu-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}
.edu-sub {
  font-size: 0.875rem;
  color: var(--accent);
}
.edu-inst {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.edu-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transition: var(--transition);
}
.project-card:hover {
  border-color: rgba(249,115,22,0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.project-card:hover::before { opacity: 1; }

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-icon {
  font-size: 2rem;
  line-height: 1;
}

.project-links {
  display: flex;
  gap: 0.5rem;
}

.project-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}
.project-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}
.project-tags span {
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  color: #60a5fa;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 3rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  color: var(--text);
}
.contact-item:hover { border-color: var(--accent); background: var(--card-hover); transform: translateX(4px); }

.contact-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(249,115,22,0.1);
  border: 1px solid rgba(249,115,22,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.contact-icon-wrap svg { width: 20px; height: 20px; }

.ci-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2px;
}
.ci-value {
  font-size: 0.9rem;
  color: var(--text);
}

/* FORM */
.contact-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  font-size: 0.9rem;
  color: var(--text);
  font-family: inherit;
  transition: var(--transition);
  resize: none;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }

.form-note {
  font-size: 0.85rem;
  text-align: center;
  min-height: 1.2em;
  color: var(--accent);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
}
.footer-inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.footer-logo {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -1px;
}
.footer-logo span { color: var(--accent); }
.footer p { color: var(--text-muted); font-size: 0.9rem; }
.footer-sub { color: var(--text-dim); font-size: 0.8rem; }
.footer-socials {
  display: flex;
  gap: 1.5rem;
  margin: 0.75rem 0;
}
.footer-socials a {
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: var(--transition);
}
.footer-socials a:hover { color: var(--accent); }
.footer-copy { font-size: 0.78rem; color: var(--text-dim); margin-top: 0.5rem; }

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   PARTICLE DOTS
   ============================================================ */
.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: floatParticle linear infinite;
  opacity: 0.4;
}

@keyframes floatParticle {
  0%   { transform: translateY(0) rotate(0deg); opacity: 0; }
  10%  { opacity: 0.4; }
  90%  { opacity: 0.4; }
  100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-avatar { flex-direction: row; flex-wrap: wrap; }
  .contact-grid { grid-template-columns: 1fr; }
  .edu-card.featured { grid-column: span 1; }
  .timeline { padding-left: 1.5rem; }
}

@media (max-width: 680px) {
  .nav-menu {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(11,15,26,0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.25rem;
    transform: translateY(-120%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
    z-index: 999;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { padding: 0.65rem 1rem; width: 100%; }
  .btn-nav { width: 100%; text-align: center; }
  .hamburger { display: flex; }

  .hero-cta { flex-direction: column; align-items: center; }
  .form-row { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .stats-row { justify-content: center; }
}