/* ============================================================
   NEHA MALVIYA PORTFOLIO — styles.css
   Theme: Clean White & Navy Blue
   ============================================================ */

/* ── CSS Variables ── */
:root {
  --navy:        #1e3a5f;
  --navy-dark:   #132840;
  --navy-mid:    #254e80;
  --blue:        #2563eb;
  --blue-light:  #3b82f6;
  --sky:         #0ea5e9;
  --white:       #ffffff;
  --off-white:   #f8fafc;
  --light:       #f1f5f9;
  --border:      #e2e8f0;
  --text:        #111827;
  --text-mid:    #374151;
  --text-muted:  #6b7280;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow:      0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg:   0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --shadow-xl:   0 20px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);
  --radius:      12px;
  --radius-lg:   18px;
  --radius-xl:   24px;
  --transition:  all 0.3s ease;
  --font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; scroll-padding-top: 78px; font-size: 16px; }
body  { font-family: var(--font); color: var(--text); background: var(--white);
        line-height: 1.7; -webkit-font-smoothing: antialiased; }
a     { text-decoration: none; color: inherit; }
ul    { list-style: none; }
img   { max-width: 100%; display: block; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow); }

.nav-container {
  max-width: 1240px; margin: 0 auto; padding: 0 28px;
  height: 72px; display: flex; align-items: center; justify-content: space-between;
}

.nav-logo a {
  font-size: 1.45rem; font-weight: 800; letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links { display: flex; gap: 2px; align-items: center; }
.nav-link {
  padding: 7px 13px; border-radius: 8px;
  font-size: 0.84rem; font-weight: 500; color: var(--text-muted);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--navy); background: var(--light);
}

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--navy); border-radius: 2px; transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  max-width: 1240px; margin: 0 auto; padding: 90px 28px 80px;
  gap: 60px; position: relative;
}

.hero-content { flex: 1; max-width: 620px; z-index: 1; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #dcfce7; color: #15803d;
  padding: 6px 16px; border-radius: 100px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.3px;
  margin-bottom: 28px;
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #22c55e;
  animation: pulseDot 2s infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 3.75rem);
  font-weight: 800; line-height: 1.13;
  color: var(--text); margin-bottom: 18px; letter-spacing: -1.5px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--navy) 20%, var(--blue) 80%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.15rem, 2.8vw, 1.6rem);
  font-weight: 600; color: var(--blue);
  min-height: 46px; display: flex; align-items: center; gap: 3px;
  margin-bottom: 20px;
}
.cursor { animation: blink 1s step-end infinite; color: var(--navy); font-weight: 200; }
@keyframes blink { 50% { opacity: 0; } }

.hero-description {
  font-size: 1.05rem; color: var(--text-muted);
  max-width: 510px; line-height: 1.8; margin-bottom: 36px;
}

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats {
  display: flex; gap: 36px; padding-top: 32px;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-number {
  font-size: 1.8rem; font-weight: 800; color: var(--navy); letter-spacing: -1px;
}
.stat-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; }

/* Code card */
.hero-visual { flex: 0 0 380px; }
.code-card {
  background: #0d1b2a; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255,255,255,0.06);
}
.code-header {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px; background: #16293d;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red    { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green  { background: #28c840; }
.code-filename {
  margin-left: 8px; font-size: 0.78rem;
  color: rgba(255,255,255,0.4); font-family: 'SF Mono', 'Fira Code', monospace;
}
.code-body {
  padding: 24px 28px; font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.82rem; line-height: 2;
}
.code-line { color: #ccd6f6; }
.kw  { color: #c792ea; }
.mod { color: #82aaff; }
.fn  { color: #80cbc4; }
.mt  { color: #ffcb6b; }
.cmt { color: #546e7a; }
.str { color: #c3e88d; }
.out { color: #a6e22e; margin-top: 4px; }
.accent { color: #64ffda; font-weight: 700; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute; bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 0.75rem;
}
.scroll-arrow {
  width: 18px; height: 18px;
  border-right: 2px solid var(--blue); border-bottom: 2px solid var(--blue);
  transform: rotate(45deg);
  animation: scrollBounce 1.6s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { opacity: 1; transform: rotate(45deg) translateY(0); }
  50%       { opacity: .4; transform: rotate(45deg) translateY(6px); }
}

/* ============================================================
   SHARED UTILITIES
   ============================================================ */
.section    { padding: 96px 0; }
.section-alt{ background: var(--off-white); }

.container  { max-width: 1240px; margin: 0 auto; padding: 0 28px; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 2.5px;
  color: var(--blue); margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 800; color: var(--text);
  letter-spacing: -1px; margin-bottom: 14px;
}
.section-desc {
  font-size: 1.05rem; color: var(--text-muted);
  max-width: 480px; margin: 0 auto; line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--radius);
  font-size: 0.92rem; font-weight: 600;
  transition: var(--transition); cursor: pointer; border: none;
  font-family: var(--font);
}
.btn-primary {
  background: var(--navy); color: var(--white);
}
.btn-primary:hover {
  background: var(--navy-dark);
  transform: translateY(-2px); box-shadow: var(--shadow-lg);
}
.btn-outline {
  background: transparent; color: var(--navy);
  border: 2px solid var(--navy);
}
.btn-outline:hover {
  background: var(--navy); color: var(--white);
  transform: translateY(-2px);
}
.btn-white {
  background: white; color: var(--navy); font-weight: 700;
}
.btn-white:hover {
  background: var(--off-white); transform: translateY(-2px); box-shadow: var(--shadow);
}
.btn-sm { padding: 9px 20px; font-size: 0.84rem; }

/* Fade-in animation (Intersection Observer) */
.fade-in {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid; grid-template-columns: 260px 1fr; gap: 72px; align-items: start;
}
.about-image-col {
  display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.avatar-ring {
  width: 220px; height: 220px; border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  padding: 4px; box-shadow: var(--shadow-xl);
}
.avatar {
  width: 100%; height: 100%; border-radius: 50%;
  background: #1a3a5c;
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem; font-weight: 800; color: white; letter-spacing: -2px;
}
.about-social { display: flex; gap: 10px; }
.social-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 20px; border-radius: var(--radius);
  font-size: 0.84rem; font-weight: 600;
  transition: var(--transition);
}
.social-pill.linkedin { background: #0a66c2; color: white; }
.social-pill.github   { background: #24292e; color: white; }
.social-pill:hover    { transform: translateY(-2px); box-shadow: var(--shadow); }

.about-text p { margin-bottom: 18px; color: var(--text-muted); font-size: 1.03rem; }
.about-lead   { font-size: 1.15rem !important; color: var(--text) !important; }

.about-details { margin-top: 32px; display: flex; flex-direction: column; gap: 13px; }
.detail-row {
  display: flex; align-items: center; gap: 14px; font-size: 0.94rem; color: var(--text-mid);
}
.detail-icon {
  width: 36px; height: 36px; min-width: 36px;
  background: var(--light); border-radius: 9px;
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
}
.project-card {
  background: var(--white); border-radius: var(--radius-xl);
  padding: 36px; border: 1px solid var(--border);
  transition: var(--transition); display: flex; flex-direction: column;
}
.project-card:hover {
  transform: translateY(-5px); box-shadow: var(--shadow-xl);
  border-color: var(--blue-light);
}

.project-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.proj-num {
  font-size: 2.4rem; font-weight: 800; color: var(--border); line-height: 1;
}
.proj-tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* Tag colours */
.ptag {
  padding: 4px 11px; border-radius: 100px;
  font-size: 0.71rem; font-weight: 700; letter-spacing: 0.2px;
}
.ptag-ai  { background: #ede9fe; color: #5b21b6; }
.ptag-py  { background: #fef3c7; color: #92400e; }
.ptag-st  { background: #e0f2fe; color: #0369a1; }
.ptag-nlp { background: #d1fae5; color: #065f46; }
.ptag-ml  { background: #fee2e2; color: #991b1b; }
.ptag-da  { background: #e0e7ff; color: #3730a3; }
.ptag-viz { background: #fce7f3; color: #9d174d; }

.proj-title {
  font-size: 1.3rem; font-weight: 700; color: var(--text);
  margin-bottom: 10px; letter-spacing: -0.4px;
}
.proj-summary {
  font-size: 0.92rem; color: var(--text-muted);
  margin-bottom: 22px; line-height: 1.7;
}

.case-study {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  background: var(--off-white); border-radius: var(--radius);
  padding: 18px; margin-bottom: 22px;
}
.case-label {
  font-size: 0.76rem; font-weight: 700; color: var(--navy); margin-bottom: 5px;
}
.case-col p { font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; }

.proj-tools { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 18px; }
.tool-chip {
  padding: 4px 11px; background: var(--navy); color: white;
  border-radius: 6px; font-size: 0.72rem; font-weight: 500;
}

.proj-features { margin-bottom: 24px; flex: 1; }
.proj-features h4 {
  font-size: 0.72rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--text-muted); margin-bottom: 10px;
}
.proj-features ul { display: flex; flex-direction: column; gap: 7px; }
.proj-features li {
  font-size: 0.84rem; color: var(--text-muted);
  padding-left: 18px; position: relative; line-height: 1.5;
}
.proj-features li::before {
  content: '→'; position: absolute; left: 0; color: var(--blue); font-weight: 700;
}

.proj-links { display: flex; gap: 10px; margin-top: auto; padding-top: 8px; }

/* ============================================================
   EXPERIENCE / TIMELINE
   ============================================================ */
.timeline { max-width: 820px; margin: 0 auto; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 20px; top: 8px; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--navy), var(--blue-light), transparent);
}
.tl-item { display: flex; gap: 36px; margin-bottom: 44px; position: relative; }
.tl-dot {
  width: 42px; height: 42px; min-width: 42px; border-radius: 50%;
  background: var(--navy); border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--navy); z-index: 1; margin-top: 4px;
}
.tl-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 30px; flex: 1;
  transition: var(--transition);
}
.tl-card:hover { box-shadow: var(--shadow-lg); border-color: var(--blue-light); }
.tl-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 4px;
}
.tl-head h3 { font-size: 1.08rem; font-weight: 700; color: var(--text); }
.tl-badge {
  font-size: 0.76rem; font-weight: 700; color: var(--blue);
  background: #eff6ff; padding: 4px 12px; border-radius: 100px; white-space: nowrap;
}
.tl-company {
  font-size: 0.87rem; color: var(--text-muted); font-weight: 500; margin-bottom: 14px;
}
.tl-bullets { display: flex; flex-direction: column; gap: 7px; margin-bottom: 18px; }
.tl-bullets li {
  font-size: 0.88rem; color: var(--text-muted);
  padding-left: 18px; position: relative; line-height: 1.6;
}
.tl-bullets li::before {
  content: '▸'; position: absolute; left: 0; color: var(--blue); font-size: 0.8rem;
}
.tl-chips { display: flex; gap: 7px; flex-wrap: wrap; }
.chip {
  padding: 4px 11px; background: var(--light); color: var(--navy);
  border-radius: 6px; font-size: 0.72rem; font-weight: 600;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px; margin-bottom: 48px;
}
.skill-cat {
  background: var(--white); border-radius: var(--radius-lg); padding: 30px;
  border: 1px solid var(--border); transition: var(--transition);
}
.skill-cat:hover { box-shadow: var(--shadow-lg); border-color: var(--blue-light); }
.skill-cat-hdr {
  display: flex; align-items: center; gap: 14px; margin-bottom: 22px;
}
.sk-icon {
  width: 48px; height: 48px; background: var(--off-white);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
}
.skill-cat-hdr h3 { font-size: 1.05rem; font-weight: 700; color: var(--text); }
.sk-list { display: flex; flex-direction: column; gap: 14px; }
.sk-item { display: flex; flex-direction: column; gap: 5px; }
.sk-meta {
  display: flex; justify-content: space-between;
  font-size: 0.84rem; font-weight: 500; color: var(--text-mid);
}
.sk-meta span:last-child { color: var(--text-muted); font-size: 0.78rem; }
.sk-bar { height: 5px; background: var(--light); border-radius: 3px; overflow: hidden; }
.sk-fill {
  height: 100%; border-radius: 3px; width: 0;
  background: linear-gradient(90deg, var(--navy), var(--blue));
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.all-badges { text-align: center; }
.all-badges h3 {
  font-size: 0.72rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 2.5px; color: var(--text-muted); margin-bottom: 20px;
}
.badges-wrap { display: flex; flex-wrap: wrap; gap: 9px; justify-content: center; }
.bdg {
  padding: 7px 17px; background: var(--white);
  border: 1.5px solid var(--border); border-radius: 100px;
  font-size: 0.84rem; font-weight: 500; color: var(--text-mid);
  transition: var(--transition);
}
.bdg:hover {
  background: var(--navy); color: white; border-color: var(--navy);
  transform: translateY(-2px);
}

/* ============================================================
   CERTIFICATIONS
   ============================================================ */
.certs-grid {
  display: flex; flex-direction: column; gap: 24px; max-width: 900px; margin: 0 auto;
}
.cert-card {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius-xl); padding: 32px 36px;
  display: flex; gap: 24px; align-items: flex-start;
  transition: var(--transition); position: relative; overflow: hidden;
}
.cert-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: linear-gradient(to bottom, var(--navy), var(--blue));
  border-radius: 4px 0 0 4px;
}
.cert-card:hover {
  box-shadow: var(--shadow-xl); border-color: var(--blue-light);
  transform: translateY(-3px);
}
.cert-left { flex-shrink: 0; }
.cert-logo { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; }

.cert-body { flex: 1; }
.cert-body h3 {
  font-size: 1.12rem; font-weight: 700; color: var(--text); margin-bottom: 4px;
}
.cert-issuer {
  font-size: 0.88rem; font-weight: 600; color: var(--blue); margin-bottom: 10px;
}
.cert-meta {
  display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 12px;
}
.cert-date, .cert-id {
  font-size: 0.8rem; color: var(--text-muted); font-weight: 500;
}
.cert-desc {
  font-size: 0.88rem; color: var(--text-muted); line-height: 1.65;
  margin-bottom: 14px;
}
.cert-skills { display: flex; gap: 7px; flex-wrap: wrap; }

.cert-badge {
  position: absolute; top: 18px; right: 18px;
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.5px;
  padding: 4px 12px; border-radius: 100px;
}
.cert-badge.verified {
  background: #dcfce7; color: #15803d;
}

/* ============================================================
   COURSEWORK
   ============================================================ */
.course-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.course-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 30px;
  border: 1px solid var(--border); border-top: 3px solid transparent;
  transition: var(--transition);
}
.course-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-lg);
  border-top-color: var(--navy);
}
.course-icon { font-size: 2rem; margin-bottom: 14px; }
.course-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 14px; }
.course-card ul { display: flex; flex-direction: column; gap: 8px; }
.course-card li {
  font-size: 0.84rem; color: var(--text-muted);
  padding-left: 18px; position: relative; line-height: 1.5;
}
.course-card li::before {
  content: '✓'; position: absolute; left: 0; color: var(--blue);
  font-weight: 700; font-size: 0.78rem;
}

/* ============================================================
   VIDEOS
   ============================================================ */
.videos-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}
.video-card {
  background: var(--white); border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--border); transition: var(--transition);
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.vid-wrap {
  position: relative; padding-bottom: 56.25%; height: 0;
  background: #0d1b2a;
}
.vid-wrap video {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.vid-info { padding: 22px 24px; }
.vid-info h3 { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.vid-info p  { font-size: 0.84rem; color: var(--text-muted); margin-bottom: 14px; line-height: 1.6; }
.vid-tags    { display: flex; gap: 6px; flex-wrap: wrap; }

/* ============================================================
   RESUME
   ============================================================ */
.resume-wrap {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: 36px; max-width: 900px; margin: 0 auto; align-items: start;
}
.resume-cta-card {
  background: linear-gradient(145deg, var(--navy), var(--navy-mid));
  border-radius: var(--radius-xl); padding: 44px 36px;
  text-align: center; color: white;
}
.resume-emoji { font-size: 3rem; margin-bottom: 16px; }
.resume-cta-card h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: 10px; }
.resume-cta-card p { opacity: .75; margin-bottom: 24px; line-height: 1.6; font-size: 0.92rem; }
.resume-note {
  margin-top: 16px !important; font-size: 0.75rem !important;
  opacity: .55 !important; line-height: 1.5;
}
.resume-note code { font-family: monospace; opacity: .8; }

.resume-highlights {
  background: var(--white); border-radius: var(--radius-xl);
  padding: 36px; border: 1px solid var(--border);
}
.resume-highlights h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 24px;
}
.hl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.hl-item {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--off-white); border-radius: var(--radius); padding: 16px;
}
.hl-icon { font-size: 1.5rem; margin-top: 2px; }
.hl-item strong { display: block; font-size: 0.82rem; color: var(--navy); margin-bottom: 4px; }
.hl-item p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin-bottom: 28px;
}
.contact-card {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 30px 22px; text-align: center;
  transition: var(--transition); display: block; cursor: pointer;
}
.contact-card:hover:not(.contact-domain) {
  transform: translateY(-5px); box-shadow: var(--shadow-xl); border-color: var(--navy);
}
.contact-icon-wrap { margin-bottom: 14px; }
.contact-emoji { font-size: 2.4rem; }
.contact-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.contact-card p  { font-size: 0.83rem; color: var(--text-muted); margin-bottom: 14px; }
.contact-arrow   { font-size: 0.83rem; font-weight: 700; color: var(--blue); }
.coming-soon     { color: var(--text-muted); }
.contact-footer  { text-align: center; color: var(--text-muted); font-size: 0.9rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy-dark); color: white; padding: 48px 0 24px; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 32px; flex-wrap: wrap; gap: 24px;
}
.footer-brand { display: flex; flex-direction: column; gap: 6px; }
.footer-logo  { font-size: 1.6rem; font-weight: 800; letter-spacing: -1px; }
.footer-brand p { font-size: 0.84rem; opacity: .55; }
.footer-nav { display: flex; gap: 24px; }
.footer-nav a {
  font-size: 0.84rem; opacity: .55; transition: var(--transition);
}
.footer-nav a:hover { opacity: 1; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 22px; text-align: center;
  font-size: 0.78rem; opacity: .38;
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */

/* Tablet landscape */
@media (max-width: 1100px) {
  .hero         { flex-direction: column; gap: 48px; padding-top: 110px; }
  .hero-visual  { width: 100%; max-width: 420px; }
  .projects-grid{ grid-template-columns: 1fr; }
}

/* Tablet */
@media (max-width: 900px) {
  .about-grid   { grid-template-columns: 1fr; gap: 44px; }
  .about-image-col { flex-direction: row; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .resume-wrap  { grid-template-columns: 1fr; }
  .hl-grid      { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 72px; left: 0; right: 0;
    background: white; flex-direction: column;
    padding: 20px; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg); gap: 4px;
    transform: translateY(-110%); opacity: 0; pointer-events: none;
    transition: var(--transition);
  }
  .nav-links.open {
    transform: translateY(0); opacity: 1; pointer-events: all;
  }
  .hamburger { display: flex; }

  .hero-stats { gap: 20px; }
  .case-study { grid-template-columns: 1fr; }

  .timeline::before { display: none; }
  .tl-item { flex-direction: column; gap: 12px; }
  .tl-dot  { display: none; }
}

/* Small mobile */
@media (max-width: 480px) {
  .hero-cta       { flex-direction: column; }
  .contact-grid   { grid-template-columns: 1fr; }
  .about-image-col{ flex-direction: column; }
  .hero-stats     { flex-wrap: wrap; gap: 16px; }
  .hero-visual    { display: none; }
  .section-title  { font-size: 1.75rem; }
}