/* ════════════════════════════════════════════
   Engr.Md.Oleullah (Oli) — PERSONAL BRANDING WEBSITE
   style.css
   ════════════════════════════════════════════ */

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

:root {
  --navy:      #0A192F;
  --navy2:     #112240;
  --blue:      #1E5CCB;
  --blue-lt:   #4DA6FF;
  --white:     #FFFFFF;
  --text:      #CCD6F6;
  --muted:     #8892B0;
  --glass-bg:  rgba(17, 34, 64, 0.6);
  --glass-border: rgba(77, 166, 255, 0.15);
  --glow:      0 0 30px rgba(77, 166, 255, 0.15);
  --radius:    12px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Syne', sans-serif;
  --font-body:    'Space Grotesk', sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-body); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 4px; }

/* ── CANVAS PARTICLES ── */
#particleCanvas {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none;
}

/* ── BACK TO TOP ── */
.back-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-lt));
  color: var(--white); font-size: 1.1rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(30, 92, 203, 0.4);
}
.back-top.visible { opacity: 1; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* ── LAYOUT ── */
.container {
  max-width: 1120px; margin: 0 auto;
  padding: 0 32px;
  position: relative; z-index: 1;
}
.section { padding: 100px 0; position: relative; }
.section-alt { background: rgba(17, 34, 64, 0.4); }
.section-label {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em;
  color: var(--blue-lt); text-transform: uppercase; margin-bottom: 10px;
  font-family: var(--font-body);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800;
  color: var(--white); margin-bottom: 48px; line-height: 1.15;
}
.section-sub {
  color: var(--muted); font-size: 1rem; max-width: 600px;
  margin-bottom: 48px; line-height: 1.7;
}

/* ── GLASS CARD ── */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
}
.glass-card:hover {
  border-color: rgba(77, 166, 255, 0.35);
  box-shadow: var(--glow);
  transform: translateY(-3px);
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px;
  font-weight: 600; font-size: 0.9rem; letter-spacing: 0.02em;
  transition: var(--transition); cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-lt));
  color: var(--white); box-shadow: 0 4px 20px rgba(30, 92, 203, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(30, 92, 203, 0.5); }
.btn-ghost {
  border: 1.5px solid var(--glass-border);
  color: var(--blue-lt);
  background: rgba(77, 166, 255, 0.05);
}
.btn-ghost:hover { border-color: var(--blue-lt); background: rgba(77, 166, 255, 0.12); }
.btn-wa {
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: var(--white);
}
.btn-wa:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35); }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; }
.full-width { width: 100%; justify-content: center; }

/* ── REVEAL ANIMATION ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
  transition-delay: var(--delay, 0s);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ════════════════════════════════════════════
   NAVBAR
   ════════════════════════════════════════════ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 40px; height: 68px;
  display: flex; align-items: center;
  transition: background 0.3s, box-shadow 0.3s;
}
.navbar.scrolled {
  background: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(77,166,255,0.1);
}
.nav-inner {
  width: 100%; max-width: 1120px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 800;
  color: var(--white); letter-spacing: -0.5px;
}
.logo-bracket { color: var(--blue-lt); }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 0.85rem; font-weight: 500;
  color: var(--muted); letter-spacing: 0.03em;
  transition: color 0.25s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: -3px;
  width: 0; height: 1.5px; background: var(--blue-lt);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--blue-lt); }
.nav-links a:hover::after { width: 100%; }
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--text); border-radius: 2px; transition: 0.3s;
}

/* ════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 68px;
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(30, 92, 203, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 92, 203, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-inner {
  max-width: 1120px; margin: 0 auto; padding: 80px 32px;
  display: grid; grid-template-columns: 1fr auto;
  gap: 60px; align-items: center;
  position: relative; z-index: 1; width: 100%;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(77,166,255,0.1); border: 1px solid rgba(77,166,255,0.2);
  color: var(--blue-lt); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.08em; padding: 6px 14px; border-radius: 20px;
  margin-bottom: 20px;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800; color: var(--white);
  line-height: 1.05; margin-bottom: 14px;
}
.glow-text {
  background: linear-gradient(135deg, var(--blue-lt), #a8d8ff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-typewriter {
  font-size: 1.05rem; color: var(--muted); margin-bottom: 20px;
  min-height: 28px;
}
.typed {
  color: var(--blue-lt); font-weight: 600;
  border-right: 2px solid var(--blue-lt);
  animation: blink 0.7s step-end infinite;
}
@keyframes blink { 0%,100%{border-color:var(--blue-lt);} 50%{border-color:transparent;} }

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700; color: var(--text);
  line-height: 1.3; margin-bottom: 20px;
}
.accent-line {
  background: linear-gradient(90deg, var(--blue), var(--blue-lt));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  color: var(--muted); font-size: 0.9rem; line-height: 1.7;
  margin-bottom: 32px; max-width: 500px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-stats { display: flex; align-items: center; gap: 24px; }
.hstat { display: flex; flex-direction: column; }
.hstat-n { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; color: var(--blue-lt); line-height: 1; }
.hstat-l { font-size: 0.7rem; color: var(--muted); letter-spacing: 0.05em; margin-top: 2px; }
.hstat-div { width: 1px; height: 36px; background: var(--glass-border); }

/* Avatar */
.hero-avatar {
  position: relative; width: 320px; height: 320px;
  flex-shrink: 0;
}
.avatar-ring {
  position: absolute; border-radius: 50%; border-style: solid;
  animation: spin linear infinite;
}
.outer-ring {
  inset: -12px;
  border-width: 2px;
  border-color: rgba(77,166,255,0.3) rgba(77,166,255,0.05) rgba(77,166,255,0.3) rgba(77,166,255,0.05);
  animation-duration: 12s;
}
.inner-ring {
  inset: -4px;
  border-width: 1.5px;
  border-color: rgba(77,166,255,0.15) rgba(77,166,255,0.5) rgba(77,166,255,0.15) rgba(77,166,255,0.5);
  animation-duration: 8s; animation-direction: reverse;
}
@keyframes spin { to { transform: rotate(360deg); } }
.avatar-photo {
  width: 100%; height: 100%; border-radius: 50%;
  overflow: hidden; border: 3px solid rgba(77,166,255,0.25);
  background: var(--navy2);
  position: relative; z-index: 1;
}
.avatar-photo img { width: 100%; height: 100%; object-fit: cover; }
.avatar-placeholder {
  display: none; width: 100%; height: 100%;
  align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 4rem; font-weight: 800;
  color: var(--blue-lt);
  background: radial-gradient(circle, rgba(30,92,203,0.2), transparent);
}
.avatar-badge {
  position: absolute; z-index: 2;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: 20px; padding: 6px 12px;
  font-size: 0.72rem; font-weight: 600; color: var(--blue-lt);
  white-space: nowrap;
}
.badge-1 { top: 10%;  left: -18%; }
.badge-2 { top: 10%;  right: -18%; }
.badge-3 { bottom: 10%; left: -18%; }
.badge-4 { bottom: 10%; right: -18%; }

.hero-scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--muted); font-size: 0.65rem; letter-spacing: 0.12em;
  text-transform: uppercase; z-index: 1;
}
.scroll-line { width: 1px; height: 48px; background: linear-gradient(transparent, var(--blue-lt)); animation: scrollAnim 2s ease infinite; }
@keyframes scrollAnim { 0%,100%{opacity:0;transform:scaleY(0);transform-origin:top;} 50%{opacity:1;transform:scaleY(1);} }

/* ════════════════════════════════════════════
   ABOUT
   ════════════════════════════════════════════ */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; }
.about-bio { padding: 40px; }
.about-bio p { color: var(--muted); margin-bottom: 16px; font-size: 0.95rem; line-height: 1.75; }
.about-bio p:last-of-type { margin-bottom: 28px; }
.about-bio strong { color: var(--white); font-weight: 600; }
.about-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: rgba(30,92,203,0.12); border: 1px solid rgba(77,166,255,0.2);
  color: var(--blue-lt); font-size: 0.75rem; font-weight: 500;
  padding: 5px 12px; border-radius: 20px;
}
.about-info { display: flex; flex-direction: column; gap: 20px; }
.info-card { padding: 28px; }
.info-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid rgba(77,166,255,0.07); }
.info-row:last-child { border-bottom: none; }
.info-key { font-size: 0.78rem; color: var(--muted); font-weight: 500; }
.info-val { font-size: 0.85rem; color: var(--text); font-weight: 600; text-align: right; }
.info-val.available { color: #4ade80; }
.about-certs { padding: 28px; }
.about-certs h4 { color: var(--white); font-size: 0.85rem; font-weight: 700; margin-bottom: 16px; letter-spacing: 0.04em; }
.domain-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.domain-list li { font-size: 0.85rem; color: var(--muted); }

/* ════════════════════════════════════════════
   SKILLS
   ════════════════════════════════════════════ */
.skills-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-bottom: 40px; }
.skill-group { padding: 36px 30px; }
.skill-group-title { font-size: 0.85rem; font-weight: 700; color: var(--white); margin-bottom: 24px; letter-spacing: 0.04em; text-transform: uppercase; }
.skill-bar-wrap { margin-bottom: 20px; }
.skill-meta { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 0.82rem; color: var(--muted); }
.skill-pct { color: var(--blue-lt); font-weight: 700; }
.skill-track { height: 6px; background: rgba(77,166,255,0.1); border-radius: 3px; overflow: hidden; }
.skill-fill {
  height: 100%; width: 0; border-radius: 3px;
  background: linear-gradient(90deg, var(--blue), var(--blue-lt));
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px rgba(77,166,255,0.4);
}
.tech-stack {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.tech-icon {
  background: rgba(30,92,203,0.1); border: 1px solid rgba(77,166,255,0.15);
  color: var(--blue-lt); font-size: 0.78rem; font-weight: 600;
  padding: 8px 16px; border-radius: 8px;
  transition: var(--transition);
}
.tech-icon:hover { background: rgba(30,92,203,0.2); border-color: var(--blue-lt); transform: translateY(-2px); }

/* ════════════════════════════════════════════
   TIMELINE
   ════════════════════════════════════════════ */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: ''; position: absolute; left: 15px; top: 0; bottom: 0;
  width: 2px; background: linear-gradient(180deg, var(--blue), transparent);
}
.tl-item { position: relative; margin-bottom: 32px; }
.tl-dot {
  position: absolute; left: -40px; top: 28px;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--navy2); border: 2px solid var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; z-index: 1;
  box-shadow: 0 0 12px rgba(30,92,203,0.4);
}
.tl-content { padding: 28px 32px; }
.tl-header { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.tl-header h3 { font-size: 1.05rem; font-weight: 700; color: var(--white); }
.tl-company { font-size: 0.85rem; color: var(--blue-lt); font-weight: 500; }
.tl-date { display: inline-block; font-size: 0.72rem; color: var(--muted); background: rgba(77,166,255,0.08); border: 1px solid rgba(77,166,255,0.15); padding: 3px 10px; border-radius: 12px; margin-bottom: 12px; }
.tl-content p { font-size: 0.88rem; color: var(--muted); line-height: 1.75; margin-bottom: 14px; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tl-tags span { background: rgba(30,92,203,0.1); border: 1px solid rgba(77,166,255,0.15); color: var(--blue-lt); font-size: 0.72rem; padding: 3px 10px; border-radius: 10px; }
.inline-link { color: var(--blue-lt); text-decoration: underline; }

/* ════════════════════════════════════════════
   RESEARCH
   ════════════════════════════════════════════ */
.research-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.research-card { padding: 36px 28px; display: flex; flex-direction: column; gap: 14px; }
.research-meta { display: flex; justify-content: space-between; align-items: center; }
.research-badge { background: rgba(74,222,128,0.1); border: 1px solid rgba(74,222,128,0.25); color: #4ade80; font-size: 0.7rem; font-weight: 700; padding: 3px 10px; border-radius: 10px; letter-spacing: 0.05em; }
.research-year { font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.research-icon { font-size: 2rem; }
.research-card h3 { font-size: 1rem; font-weight: 700; color: var(--white); line-height: 1.4; }
.research-journal { font-size: 0.78rem; color: var(--blue-lt); font-weight: 500; font-style: italic; }
.research-abstract { font-size: 0.83rem; color: var(--muted); line-height: 1.7; flex: 1; }
.research-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.research-tags span { background: rgba(30,92,203,0.1); border: 1px solid rgba(77,166,255,0.12); color: var(--muted); font-size: 0.7rem; padding: 2px 9px; border-radius: 8px; }
.research-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: auto; }

/* ════════════════════════════════════════════
   PROJECTS
   ════════════════════════════════════════════ */
.project-filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn {
  background: transparent; border: 1px solid var(--glass-border);
  color: var(--muted); font-size: 0.8rem; font-weight: 500;
  padding: 8px 18px; border-radius: 20px; transition: var(--transition);
  font-family: var(--font-body);
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(30,92,203,0.15); border-color: var(--blue-lt); color: var(--blue-lt);
}
.projects-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.project-card { padding: 30px 26px; transition: var(--transition); }
.project-card.hidden { display: none; }
.proj-cat-tag { font-size: 0.72rem; font-weight: 700; color: var(--blue-lt); letter-spacing: 0.06em; margin-bottom: 14px; }
.project-card h3 { font-size: 0.95rem; font-weight: 700; color: var(--white); margin-bottom: 10px; line-height: 1.4; }
.project-card p { font-size: 0.83rem; color: var(--muted); line-height: 1.7; margin-bottom: 16px; }
.proj-stack { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.proj-stack span { background: rgba(77,166,255,0.07); color: var(--muted); font-size: 0.7rem; padding: 3px 8px; border-radius: 6px; border: 1px solid rgba(77,166,255,0.1); }
.proj-link { font-size: 0.82rem; font-weight: 600; color: var(--blue-lt); transition: gap 0.2s; }
.proj-link:hover { text-decoration: underline; }

/* ════════════════════════════════════════════
   VENTURES
   ════════════════════════════════════════════ */
.ventures-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.venture-card { padding: 36px 28px; display: flex; flex-direction: column; gap: 0; }
.venture-logo { font-size: 3rem; margin-bottom: 16px; }
.venture-body { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.venture-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--white); }
.venture-role { font-size: 0.78rem; color: var(--blue-lt); font-weight: 600; }
.venture-body p { font-size: 0.85rem; color: var(--muted); line-height: 1.75; }
.venture-highlights { display: flex; gap: 20px; padding: 16px 0; border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border); margin: 10px 0; }
.vh-item { display: flex; flex-direction: column; align-items: center; }
.vh-n { font-size: 0.9rem; font-weight: 800; color: var(--blue-lt); }
.vh-l { font-size: 0.62rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 2px; }

/* ════════════════════════════════════════════
   CERTIFICATIONS
   ════════════════════════════════════════════ */
.certs-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.cert-card { padding: 36px; display: flex; flex-direction: column; gap: 10px; position: relative; }
.cert-icon { font-size: 2.2rem; }
.cert-card h3 { font-size: 1rem; font-weight: 700; color: var(--white); line-height: 1.4; }
.cert-issuer { font-size: 0.8rem; color: var(--blue-lt); font-weight: 500; }
.cert-desc { font-size: 0.84rem; color: var(--muted); line-height: 1.7; }
.cert-badge {
  display: inline-block; align-self: flex-start;
  background: rgba(30,92,203,0.15); border: 1px solid rgba(77,166,255,0.25);
  color: var(--blue-lt); font-size: 0.7rem; font-weight: 700;
  padding: 3px 10px; border-radius: 10px; letter-spacing: 0.05em;
}

/* ════════════════════════════════════════════
   ACHIEVEMENTS COUNTERS
   ════════════════════════════════════════════ */
.counters-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.counter-card { padding: 36px 24px; text-align: center; }
.counter-icon { font-size: 2rem; margin-bottom: 14px; }
.counter-num {
  font-family: var(--font-display); font-size: 3rem; font-weight: 800;
  color: var(--white); line-height: 1;
  background: linear-gradient(135deg, var(--blue-lt), #fff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.counter-num::after { content: '+'; }
.counter-label { font-size: 0.82rem; color: var(--muted); font-weight: 500; line-height: 1.4; }

/* ════════════════════════════════════════════
   GALLERY
   ════════════════════════════════════════════ */
.gallery-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.gallery-item {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4/3; background: var(--navy2);
  border: 1px solid var(--glass-border);
  cursor: pointer;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-overlay {
  position: absolute; inset: 0; background: rgba(10,25,47,0.6);
  display: flex; align-items: flex-end; padding: 16px;
  opacity: 0; transition: var(--transition);
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay span { font-size: 0.82rem; font-weight: 600; color: var(--blue-lt); }
.gallery-placeholder { background: linear-gradient(135deg, var(--navy2), rgba(30,92,203,0.2)); }
.gallery-placeholder::after {
  content: '📷'; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; opacity: 0.3;
}

/* ════════════════════════════════════════════
   CONTACT
   ════════════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 28px; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-card { padding: 24px; display: flex; flex-direction: column; gap: 4px; }
.contact-method {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 0; border-bottom: 1px solid rgba(77,166,255,0.07);
  transition: var(--transition);
}
.contact-method:last-child { border-bottom: none; }
.contact-method:hover { transform: translateX(4px); }
.cm-icon { font-size: 1.3rem; width: 36px; text-align: center; }
.cm-text { display: flex; flex-direction: column; }
.cm-label { font-size: 0.7rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.cm-val { font-size: 0.9rem; color: var(--text); font-weight: 500; }
.quick-actions { padding: 24px; display: flex; flex-direction: column; gap: 12px; }
.quick-actions h4 { font-size: 0.82rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.social-links { padding: 24px; }
.social-links h4 { font-size: 0.82rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.social-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.social-btn {
  background: rgba(30,92,203,0.1); border: 1px solid rgba(77,166,255,0.15);
  color: var(--blue-lt); font-size: 0.8rem; font-weight: 700;
  padding: 10px; border-radius: 8px; text-align: center;
  transition: var(--transition); display: block;
}
.social-btn:hover { background: rgba(30,92,203,0.25); border-color: var(--blue-lt); transform: translateY(-2px); }

/* Form */
.contact-form { padding: 36px; display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-group label { font-size: 0.78rem; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; }
.form-group input,
.form-group textarea {
  background: rgba(10,25,47,0.8); border: 1px solid var(--glass-border);
  border-radius: 8px; padding: 12px 16px;
  color: var(--text); font-family: var(--font-body); font-size: 0.88rem;
  transition: border-color 0.25s, box-shadow 0.25s; outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-lt);
  box-shadow: 0 0 0 3px rgba(77,166,255,0.12);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted); }
.form-note { font-size: 0.75rem; color: var(--muted); text-align: center; }

/* ════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════ */
.footer {
  background: var(--navy2); border-top: 1px solid var(--glass-border);
  padding: 60px 0 0;
}
.footer-inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand p { font-size: 0.85rem; color: var(--muted); line-height: 1.7; margin-top: 14px; }
.footer-copy { font-size: 0.8rem; color: var(--muted); margin-top: 8px; }
.footer-links, .footer-social-col { display: flex; flex-direction: column; }
.footer-links h4, .footer-social-col h4 {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--white); margin-bottom: 18px;
}
.footer-links a, .footer-social-col a {
  font-size: 0.85rem; color: var(--muted); margin-bottom: 10px;
  transition: color 0.25s;
}
.footer-links a:hover, .footer-social-col a:hover { color: var(--blue-lt); }
.footer-socials { display: flex; flex-direction: column; }
.footer-bottom {
  border-top: 1px solid rgba(77,166,255,0.07);
  padding: 20px 0; display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px;
}
.footer-bottom p { font-size: 0.78rem; color: var(--muted); }

/* ════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 48px; }
  .hero-avatar { margin: 0 auto; }
  .hero-badge, .hero-ctas, .hero-stats { justify-content: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .badge-1 { left: -10%; }
  .badge-2 { right: -10%; }
  .badge-3 { left: -10%; }
  .badge-4 { right: -10%; }
  .research-grid, .ventures-grid { grid-template-columns: 1fr; }
  .counters-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  .navbar { padding: 0 20px; }
  .nav-links { display: none; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; background: rgba(10,25,47,0.98); backdrop-filter: blur(20px); padding: 24px 32px; gap: 20px; border-bottom: 1px solid var(--glass-border); z-index: 99; }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2,1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .section { padding: 70px 0; }
  .hero-avatar { width: 220px; height: 220px; }
  .badge-1, .badge-2, .badge-3, .badge-4 { display: none; }
  .counters-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 24px; }
  .tl-dot { left: -24px; width: 22px; height: 22px; font-size: 0.6rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 20px; }
  .footer-inner { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; align-items: center; }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}