/* ═══════════════════════════════════════════════════════════
   DR. PHANI SIGINAMSETTY — PORTFOLIO
   Dark / Light Theme · 2025
═══════════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── DARK THEME (default) ─────────────────────────────────── */
:root {
  --bg:          #050810;
  --bg2:         #080d18;
  --surface:     #0c1220;
  --surface2:    #101828;
  --border:      rgba(255,255,255,0.07);
  --border-hi:   rgba(79,158,255,0.35);

  --blue:        #4f9eff;
  --blue-dim:    rgba(79,158,255,0.15);
  --blue-glow:   rgba(79,158,255,0.3);
  --purple:      #a78bfa;
  --purple-dim:  rgba(167,139,250,0.15);
  --green:       #34d399;
  --green-dim:   rgba(52,211,153,0.15);
  --amber:       #fbbf24;
  --amber-dim:   rgba(251,191,36,0.15);
  --cyan:        #22d3ee;
  --pink:        #f472b6;

  --text:        #f1f5f9;
  --text-2:      #94a3b8;
  --text-3:      #64748b;

  --sidebar-w:   272px;
  --r:           12px;
  --r-lg:        18px;
  --ease:        cubic-bezier(.4,0,.2,1);
  --t:           0.25s var(--ease);

  --font:        'Plus Jakarta Sans', system-ui, sans-serif;
  --mono:        'JetBrains Mono', monospace;
}

/* ── LIGHT THEME ──────────────────────────────────────────── */
[data-theme="light"] {
  --bg:          #f8fafc;
  --bg2:         #f1f5f9;
  --surface:     #ffffff;
  --surface2:    #f8fafc;
  --border:      rgba(0,0,0,0.08);
  --border-hi:   rgba(79,158,255,0.4);

  --text:        #0f172a;
  --text-2:      #475569;
  --text-3:      #94a3b8;
}

[data-theme="light"] body::before {
  background-image:
    linear-gradient(rgba(79,158,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,158,255,0.04) 1px, transparent 1px);
}

[data-theme="light"] body::after {
  background: radial-gradient(ellipse, rgba(79,158,255,0.05) 0%, transparent 65%);
}

[data-theme="light"] .sidebar {
  background: rgba(255,255,255,0.95);
  border-right-color: rgba(0,0,0,0.08);
}

[data-theme="light"] .mobile-header {
  background: rgba(255,255,255,0.97);
  border-bottom-color: rgba(0,0,0,0.08);
}

[data-theme="light"] .nav-item.active {
  background: rgba(79,158,255,0.1);
}

[data-theme="light"] .avatar {
  background: linear-gradient(135deg, #e0f2fe, #ddd6fe);
}

[data-theme="light"] .tl-card,
[data-theme="light"] .exp-card,
[data-theme="light"] .proj-card,
[data-theme="light"] .edu-tl-card,
[data-theme="light"] .patent-card,
[data-theme="light"] .rs-chart-card,
[data-theme="light"] .proj-chart-card,
[data-theme="light"] .hsg-card,
[data-theme="light"] .skill-row,
[data-theme="light"] .skills-bars-panel,
[data-theme="light"] .tabs-wrap,
[data-theme="light"] .feat-block {
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

[data-theme="light"] .patent-card {
  background: #f8fafc;
}

[data-theme="light"] .skill-pill,
[data-theme="light"] .exp-tags span,
[data-theme="light"] .proj-chip,
[data-theme="light"] .proj-stack-chip {
  background: #f1f5f9;
  color: #475569;
}

[data-theme="light"] .sbar-track {
  background: rgba(0,0,0,0.08);
}

[data-theme="light"] .sbar-fill.c-blue,
[data-theme="light"] .sbar-fill.c-purple,
[data-theme="light"] .sbar-fill.c-cyan,
[data-theme="light"] .sbar-fill.c-green,
[data-theme="light"] .sbar-fill.c-amber,
[data-theme="light"] .sbar-fill.c-pink {
  box-shadow: none;
}

[data-theme="light"] .hero-tag {
  background: #ffffff;
  color: #475569;
}

/* Theme toggle button */
.theme-toggle {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  border: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--t);
  box-shadow: 0 4px 20px rgba(79,158,255,0.5);
}

.theme-toggle:hover {
  transform: scale(1.12) rotate(20deg);
  box-shadow: 0 6px 28px rgba(79,158,255,0.7);
}

[data-theme="light"] .theme-toggle {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  box-shadow: 0 4px 20px rgba(245,158,11,0.5);
}

[data-theme="light"] .theme-toggle:hover {
  box-shadow: 0 6px 28px rgba(245,158,11,0.7);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Animated background grid */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,158,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,158,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  top: -30%;
  left: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(79,158,255,0.06) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
  animation: drift 20s ease-in-out infinite alternate;
}

@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(5%,8%) scale(1.1); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--blue); }

/* ── SIDEBAR ──────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  background: rgba(5,8,16,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: transform .3s var(--ease);
  overflow-y: auto;
  overflow-x: hidden;
}

/* Profile block */
.sidebar-profile {
  padding: 32px 20px 24px;
  text-align: center;
  position: relative;
}

.sidebar-profile::after {
  content: '';
  position: absolute;
  bottom: 0; left: 20px; right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* Avatar */
.avatar-wrap {
  position: relative;
  width: 84px; height: 84px;
  margin: 0 auto 16px;
}

.avatar-ring {
  position: absolute;
  inset: -3px;
  border-radius: 22px;
  background: conic-gradient(from 0deg, var(--blue), var(--purple), var(--cyan), var(--blue));
  animation: spin 4s linear infinite;
  opacity: .8;
}

@keyframes spin { to { transform: rotate(360deg); } }

.avatar {
  position: relative;
  width: 84px; height: 84px;
  background: var(--surface);
  border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  z-index: 1;
}

.initials {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.sidebar-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 3px;
  letter-spacing: -.3px;
}

.sidebar-role {
  font-size: 0.75rem;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.sidebar-location {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.social-links a {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-2);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  text-decoration: none;
  transition: var(--t);
}

.social-links a:hover {
  background: var(--blue-dim);
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--blue-glow);
}

/* Nav */
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--text-3);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: var(--t);
  position: relative;
  overflow: hidden;
}

.nav-item .nav-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
  transition: var(--t);
  flex-shrink: 0;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.nav-item:hover .nav-icon {
  background: var(--blue-dim);
  color: var(--blue);
}

.nav-item.active {
  color: var(--blue);
  background: var(--blue-dim);
}

.nav-item.active .nav-icon {
  background: var(--blue);
  color: #fff;
}

.nav-label { flex: 1; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-size: .72rem;
  color: var(--text-3);
  text-align: center;
  font-family: var(--mono);
}

/* Mobile header */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: rgba(5,8,16,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
  z-index: 300;
}

.mobile-brand {
  font-weight: 800;
  font-size: .95rem;
  background: linear-gradient(90deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mobile-menu-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  width: 38px; height: 38px;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--t);
}

.mobile-menu-toggle:hover { border-color: var(--blue); color: var(--blue); }

/* ── MAIN LAYOUT ──────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  width: calc(100vw - var(--sidebar-w));
  overflow-x: hidden;
}

/* ── HERO LAYOUT (two-column) ─────────────────────────────── */
.hero {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 56px 64px 48px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 10%; right: -5%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(167,139,250,0.08) 0%, transparent 65%);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  gap: 36px;
  align-items: start;
  min-width: 0;
  width: 100%;
}

.hero-left { display: flex; flex-direction: column; min-width: 0; overflow: hidden; }

/* Right panel */
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.hero-chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
}

.hero-chart-title {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  font-family: var(--mono);
}

.hero-chart-wrap {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto 16px;
}

.hero-chart-wrap canvas { width: 100% !important; height: 100% !important; }

.donut-center-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.dcl-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  font-family: var(--font);
}

.dcl-sub {
  font-size: .65rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-top: 3px;
}

.donut-legend, .domain-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  justify-content: center;
}

.dl-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .72rem;
  color: var(--text-2);
}

.dl-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Stat grid */
.hero-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.hsg-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px 12px;
  text-align: center;
  transition: var(--t);
}

.hsg-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
}

.hsg-icon {
  font-size: 1rem;
  margin-bottom: 6px;
  display: block;
}

.hsg-icon.blue   { color: var(--blue); }
.hsg-icon.green  { color: var(--green); }
.hsg-icon.purple { color: var(--purple); }
.hsg-icon.amber  { color: var(--amber); }

.hsg-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  font-family: var(--font);
}

.hsg-lbl {
  font-size: .65rem;
  color: var(--text-3);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .4px;
}

/* ── SKILLS MASTER LAYOUT ─────────────────────────────────── */
.skills-master {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  min-width: 0;
}

.sbp-title {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  font-family: var(--mono);
}

.skills-bars-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px;
  position: sticky;
  top: 24px;
}

/* Skill bars */
.skill-bars { display: flex; flex-direction: column; gap: 14px; }

.sbar-item { cursor: default; }

.sbar-label {
  display: flex;
  justify-content: space-between;
  font-size: .8rem;
  color: var(--text-2);
  margin-bottom: 6px;
  font-weight: 500;
}

.sbar-pct {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--text-3);
}

.sbar-track {
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 99px;
  overflow: visible;
  position: relative;
}

.sbar-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: var(--blue);
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
  position: relative;
}

.sbar-fill.c-blue   { background: linear-gradient(90deg, #2d7dd2, #4f9eff) !important; box-shadow: 0 0 10px rgba(79,158,255,0.6); }
.sbar-fill.c-purple { background: linear-gradient(90deg, #7c5cbf, #a78bfa) !important; box-shadow: 0 0 10px rgba(167,139,250,0.6); }
.sbar-fill.c-cyan   { background: linear-gradient(90deg, #0ea5c9, #22d3ee) !important; box-shadow: 0 0 10px rgba(34,211,238,0.6); }
.sbar-fill.c-green  { background: linear-gradient(90deg, #10b981, #34d399) !important; box-shadow: 0 0 10px rgba(52,211,153,0.6); }
.sbar-fill.c-amber  { background: linear-gradient(90deg, #d97706, #fbbf24) !important; box-shadow: 0 0 10px rgba(251,191,36,0.6); }
.sbar-fill.c-pink   { background: linear-gradient(90deg, #db2777, #f472b6) !important; box-shadow: 0 0 10px rgba(244,114,182,0.6); }

.sbar-item:hover .sbar-label { color: var(--text); }
.sbar-item:hover .sbar-fill { filter: brightness(1.15); }

/* Domain donut */
.domain-donut-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.domain-donut-wrap canvas {
  width: 140px !important;
  height: 140px !important;
}

.skills-accordion-panel { display: flex; flex-direction: column; gap: 0; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--blue);
  background: var(--blue-dim);
  border: 1px solid rgba(79,158,255,0.25);
  padding: 6px 14px;
  border-radius: 99px;
  margin-bottom: 28px;
  width: fit-content;
}

.hero-eyebrow::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--blue);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.7); }
}

.hero-name {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 12px;
  color: var(--text);
}

.hero-name .grad {
  background: linear-gradient(135deg, var(--blue) 0%, var(--purple) 50%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: .97rem;
  color: var(--text-2);
  margin-bottom: 28px;
  font-weight: 400;
  max-width: 680px;
  line-height: 1.85;
  text-align: justify;
  text-justify: inter-word;
}

.hero-subtitle strong {
  color: var(--text-2);
  font-weight: 400;
}

/* Typed roles line */
.hero-roles {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 1.25rem;
  font-weight: 600;
}

.role-static {
  color: var(--text-3);
}

.role-typed {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 1.1rem;
  position: relative;
}

.role-typed::after {
  content: '|';
  color: var(--blue);
  animation: blink .7s step-end infinite;
  margin-left: 2px;
}

@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 24px;
  max-width: 100%;
  overflow: hidden;
}

.hero-tag {
  font-size: .78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 99px;
  border: 1px solid var(--border);
  color: var(--text-2);
  background: var(--surface);
  transition: var(--t);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-tag i { font-size: .7rem; color: var(--blue); }

.hero-tag:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: #fff;
  border-radius: 10px;
  font-weight: 700;
  font-size: .9rem;
  text-decoration: none;
  transition: var(--t);
  box-shadow: 0 4px 20px var(--blue-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--blue-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 600;
  font-size: .9rem;
  text-decoration: none;
  transition: var(--t);
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
  transform: translateY(-2px);
}

/* hero stats row removed — replaced by hsg-card grid */

/* ── SECTIONS ─────────────────────────────────────────────── */
.section {
  padding: 72px 56px;
  border-top: 1px solid var(--border);
  position: relative;
  min-width: 0;
  overflow-x: hidden;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.section-label::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--blue);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.5px;
  color: var(--text);
  margin-bottom: 8px;
}

.section-desc {
  font-size: .95rem;
  color: var(--text-2);
  margin-bottom: 40px;
  max-width: 520px;
}

/* ── SKILL SECTION ────────────────────────────────────────── */
.skills-layout {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skill-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: var(--t);
}

.skill-row:hover { border-color: var(--border-hi); }

.skill-row-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  cursor: pointer;
  user-select: none;
  transition: var(--t);
}

.skill-row-header:hover { background: rgba(255,255,255,0.02); }

.skill-row-icon {
  width: 40px; height: 40px;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  transition: var(--t);
}

.skill-row[data-cat="genai"]  .skill-row-icon { background: rgba(79,158,255,0.12);  color: var(--blue); }
.skill-row[data-cat="llm"]    .skill-row-icon { background: rgba(167,139,250,0.12); color: var(--purple); }
.skill-row[data-cat="ml"]     .skill-row-icon { background: rgba(52,211,153,0.12);  color: var(--green); }
.skill-row[data-cat="vision"] .skill-row-icon { background: rgba(251,191,36,0.12);  color: var(--amber); }
.skill-row[data-cat="mlops"]  .skill-row-icon { background: rgba(34,211,238,0.12);  color: var(--cyan); }
.skill-row[data-cat="data"]   .skill-row-icon { background: rgba(244,114,182,0.12); color: var(--pink); }

.skill-row-info { flex: 1; }

.skill-row-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.skill-row-count {
  font-size: .72rem;
  color: var(--text-3);
  font-family: var(--mono);
}

.skill-row-accent {
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.skill-row[data-cat="genai"]  .skill-row-accent { background: var(--blue); }
.skill-row[data-cat="llm"]    .skill-row-accent { background: var(--purple); }
.skill-row[data-cat="ml"]     .skill-row-accent { background: var(--green); }
.skill-row[data-cat="vision"] .skill-row-accent { background: var(--amber); }
.skill-row[data-cat="mlops"]  .skill-row-accent { background: var(--cyan); }
.skill-row[data-cat="data"]   .skill-row-accent { background: var(--pink); }

.skill-row-chevron {
  color: var(--text-3);
  font-size: .8rem;
  transition: transform .25s var(--ease);
}

.skill-row.open .skill-row-chevron { transform: rotate(180deg); }

.skill-row-body {
  display: none;
  padding: 0 22px 20px;
  border-top: 1px solid var(--border);
}

.skill-row.open .skill-row-body { display: block; }

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 16px;
}

.skill-pill {
  font-size: .78rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-2);
  background: rgba(255,255,255,0.03);
  transition: var(--t);
  cursor: default;
  display: flex;
  align-items: center;
  gap: 6px;
}

.skill-pill::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
}

.skill-row[data-cat="genai"]  .skill-pill::before { background: var(--blue); }
.skill-row[data-cat="llm"]    .skill-pill::before { background: var(--purple); }
.skill-row[data-cat="ml"]     .skill-pill::before { background: var(--green); }
.skill-row[data-cat="vision"] .skill-pill::before { background: var(--amber); }
.skill-row[data-cat="mlops"]  .skill-pill::before { background: var(--cyan); }
.skill-row[data-cat="data"]   .skill-pill::before { background: var(--pink); }

.skill-pill:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.15);
  color: var(--text);
  transform: translateY(-1px);
}

/* keep old .skill-card.hidden for filter compat */
.skill-card.hidden { display: none; }
.skill-row.hidden  { display: none; }

/* ── EXPERIENCE TIMELINE ──────────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--blue), var(--purple), transparent);
}

.tl-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 32px;
}

.tl-dot {
  position: absolute;
  left: -34px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--blue);
  transition: var(--t);
  z-index: 2;
}

.tl-item:hover .tl-dot {
  background: var(--blue);
  box-shadow: 0 0 0 4px var(--blue-dim);
  transform: scale(1.2);
}

.tl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 26px;
  transition: var(--t);
}

.tl-item:hover .tl-card {
  border-color: var(--border-hi);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.tl-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tl-role {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.2px;
}

.tl-company {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--purple);
  font-weight: 600;
  margin-top: 4px;
}

.tl-loc {
  color: var(--text-3);
  font-weight: 400;
  font-size: .8rem;
}

.tl-date {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--blue);
  background: var(--blue-dim);
  border: 1px solid rgba(79,158,255,0.2);
  padding: 4px 12px;
  border-radius: 99px;
  white-space: nowrap;
  font-weight: 500;
}

.tl-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.tl-list li {
  font-size: .88rem;
  color: var(--text-2);
  line-height: 1.65;
  padding-left: 18px;
  position: relative;
}

.tl-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--blue);
  font-size: .8rem;
  top: 1px;
}

.tl-list li strong { color: var(--text); font-weight: 600; }

/* ── PROJECT CARDS ────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* Featured card spans full width */
.proj-card.featured {
  grid-column: 1 / -1;
}

.proj-card.featured .proj-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 32px;
}

.proj-card.featured .proj-top    { grid-column: 1 / -1; }
.proj-card.featured .proj-chips  { grid-column: 1 / -1; }
.proj-card.featured .proj-divider { grid-column: 1 / -1; }
.proj-card.featured .proj-features-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 4px;
}

.feat-block {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  transition: var(--t);
}

.feat-block:hover {
  border-color: var(--border-hi);
  background: rgba(79,158,255,0.04);
}

.feat-block-title {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.feat-block-title i {
  font-size: .75rem;
  color: var(--blue);
}

.feat-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.feat-block ul li {
  font-size: .75rem;
  color: var(--text-2);
  padding-left: 12px;
  position: relative;
  line-height: 1.5;
}

.feat-block ul li::before {
  content: '·';
  position: absolute;
  left: 2px;
  color: var(--blue);
  font-size: 1rem;
  line-height: 1.2;
}

.proj-card.featured .proj-stack-section {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.proj-stack-label {
  font-size: .7rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  font-family: var(--mono);
}

.proj-stack-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.proj-stack-chip {
  font-size: .7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 5px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-3);
  font-family: var(--mono);
  transition: var(--t);
}

.proj-stack-chip:hover {
  border-color: rgba(255,255,255,0.15);
  color: var(--text-2);
}

/* explicit accent classes for non-featured cards */
.proj-card.accent-purple .proj-banner { background: linear-gradient(90deg, var(--purple), var(--pink)); }
.proj-card.accent-amber  .proj-banner { background: linear-gradient(90deg, var(--amber), var(--pink)); }
.proj-card.accent-green  .proj-banner { background: linear-gradient(90deg, var(--green), var(--cyan)); }

.proj-card.accent-purple .proj-icon { background: rgba(167,139,250,0.12); color: var(--purple); }
.proj-card.accent-amber  .proj-icon { background: rgba(251,191,36,0.12);  color: var(--amber); }
.proj-card.accent-green  .proj-icon { background: rgba(52,211,153,0.12);  color: var(--green); }

.proj-card.accent-purple .proj-list li::before { color: var(--purple); }
.proj-card.accent-amber  .proj-list li::before { color: var(--amber); }
.proj-card.accent-green  .proj-list li::before { color: var(--green); }

.proj-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 0;
  display: flex;
  flex-direction: column;
  transition: var(--t);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.proj-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-5px);
  box-shadow: 0 24px 56px rgba(0,0,0,0.55);
}

/* Coloured top banner per card */
.proj-banner {
  height: 5px;
  width: 100%;
  flex-shrink: 0;
}

.proj-card:nth-child(1) .proj-banner { background: linear-gradient(90deg, var(--blue), var(--cyan)); }
.proj-card:nth-child(2) .proj-banner { background: linear-gradient(90deg, var(--purple), var(--pink)); }
.proj-card:nth-child(3) .proj-banner { background: linear-gradient(90deg, var(--amber), var(--pink)); }
.proj-card:nth-child(4) .proj-banner { background: linear-gradient(90deg, var(--green), var(--cyan)); }

.proj-body {
  padding: 24px 26px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}

.proj-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.proj-icon {
  width: 46px; height: 46px;
  border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.proj-card:nth-child(1) .proj-icon { background: rgba(79,158,255,0.12);  color: var(--blue); }
.proj-card:nth-child(2) .proj-icon { background: rgba(167,139,250,0.12); color: var(--purple); }
.proj-card:nth-child(3) .proj-icon { background: rgba(251,191,36,0.12);  color: var(--amber); }
.proj-card:nth-child(4) .proj-icon { background: rgba(52,211,153,0.12);  color: var(--green); }

.proj-meta { flex: 1; }

.proj-num {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--text-3);
  letter-spacing: 1px;
  margin-bottom: 4px;
  text-transform: uppercase;
}

.proj-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -.2px;
}

.proj-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.proj-chip {
  font-size: .68rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 5px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-3);
  font-family: var(--mono);
  transition: var(--t);
}

.proj-card:hover .proj-chip {
  border-color: rgba(255,255,255,0.12);
  color: var(--text-2);
}

.proj-divider {
  height: 1px;
  background: var(--border);
}

.proj-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  flex: 1;
}

.proj-list li {
  font-size: .84rem;
  color: var(--text-2);
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}

.proj-list li::before {
  content: '▸';
  position: absolute;
  left: 0; top: 1px;
  font-size: .75rem;
}

.proj-card:nth-child(1) .proj-list li::before { color: var(--blue); }
.proj-card:nth-child(2) .proj-list li::before { color: var(--purple); }
.proj-card:nth-child(3) .proj-list li::before { color: var(--amber); }
.proj-card:nth-child(4) .proj-list li::before { color: var(--green); }

.proj-list li strong { color: var(--text); font-weight: 600; }

/* ── RESEARCH SECTION ─────────────────────────────────────── */
.research-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.rs-stat {
  flex: 1;
  min-width: 140px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--t);
}

.rs-stat:hover { border-color: var(--border-hi); transform: translateY(-2px); }

.rs-stat-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: .95rem;
  flex-shrink: 0;
}

.rs-stat.s1 .rs-stat-icon { background: var(--blue-dim); color: var(--blue); }
.rs-stat.s2 .rs-stat-icon { background: var(--green-dim); color: var(--green); }
.rs-stat.s3 .rs-stat-icon { background: var(--purple-dim); color: var(--purple); }

.rs-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.rs-stat-lbl {
  font-size: .72rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-top: 3px;
  font-weight: 500;
}

/* Tabs */
.tabs-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.25);
  padding: 6px 6px 0;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 12px 20px;
  background: transparent;
  border: none;
  border-radius: 10px 10px 0 0;
  color: var(--text-3);
  font-family: var(--font);
  font-weight: 600;
  font-size: .88rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--t);
  position: relative;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transition: transform .25s var(--ease);
}

.tab-btn:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.tab-btn.active { color: var(--blue); background: rgba(79,158,255,0.06); }
.tab-btn.active::after { transform: scaleX(1); }

.tab-count {
  font-size: .7rem;
  background: var(--blue-dim);
  color: var(--blue);
  border: 1px solid rgba(79,158,255,0.25);
  padding: 1px 7px;
  border-radius: 99px;
  font-family: var(--mono);
  font-weight: 700;
}

.tab-btn.active .tab-count { background: var(--blue); color: #fff; border-color: var(--blue); }

.tab-pane { display: none; padding: 0; }
.tab-pane.active { display: block; animation: fadeUp .3s var(--ease); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Patent cards grid */
.patent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
  padding: 24px;
}

.patent-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
  transition: var(--t);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.patent-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--purple));
  opacity: 0;
  transition: var(--t);
}

.patent-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}

.patent-card:hover::before { opacity: 1; }

.patent-card.is-granted {
  border-color: rgba(52,211,153,0.2);
}

.patent-card.is-granted::before {
  background: linear-gradient(180deg, var(--green), var(--cyan));
  opacity: 1;
}

.patent-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.patent-title {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
  flex: 1;
}

.badge-granted {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--green-dim);
  border: 1px solid rgba(52,211,153,0.4);
  color: var(--green);
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  padding: 3px 8px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.patent-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.patent-no {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--text-3);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
}

.patent-year {
  font-size: .72rem;
  color: var(--blue);
  font-weight: 600;
  font-family: var(--mono);
}

.patent-grant-no {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid rgba(52,211,153,0.25);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Publication cards */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 8px 24px 24px;
}

.pub-card {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 16px;
  transition: var(--t);
  position: relative;
}

.pub-card:last-child { border-bottom: none; }

.pub-card:hover { padding-left: 8px; }

.pub-num {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--text-3);
  min-width: 28px;
  padding-top: 2px;
  font-weight: 600;
}

.pub-body { flex: 1; }

.pub-title {
  font-size: .92rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 6px;
}

.pub-venue {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.pub-journal {
  font-size: .75rem;
  color: var(--purple);
  font-weight: 600;
}

.pub-year-badge {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--text-3);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 1px 7px;
  border-radius: 4px;
}

.pub-authors {
  font-size: .75rem;
  color: var(--text-3);
  margin-bottom: 10px;
  line-height: 1.4;
}

.pub-authors strong { color: var(--blue); }

.doi-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .72rem;
  color: var(--blue);
  text-decoration: none;
  background: var(--blue-dim);
  border: 1px solid rgba(79,158,255,0.2);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: var(--mono);
  transition: var(--t);
  font-weight: 500;
}

.doi-link:hover {
  background: rgba(79,158,255,0.22);
  border-color: var(--blue);
  transform: translateX(3px);
  box-shadow: 0 2px 10px var(--blue-glow);
}

/* ── EDUCATION ────────────────────────────────────────────── */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 22px;
  transition: var(--t);
  position: relative;
  overflow: hidden;
}

.edu-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--purple));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .35s var(--ease);
}

.edu-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.35);
}

.edu-card:hover::before { transform: scaleY(1); }

.edu-year {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--blue);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: .5px;
}

.edu-degree {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
  line-height: 1.3;
}

.edu-inst {
  font-size: .82rem;
  color: var(--text-3);
  margin-bottom: 12px;
}

.edu-score {
  display: inline-block;
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid rgba(52,211,153,0.25);
  padding: 3px 10px;
  border-radius: 99px;
}

/* ── RESUME ───────────────────────────────────────────────── */
.resume-frame {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  height: 80vh;
  min-height: 560px;
}

.resume-frame iframe { width: 100%; height: 100%; border: none; display: block; }

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: #fff;
  border-radius: 10px;
  font-weight: 700;
  font-size: .88rem;
  text-decoration: none;
  transition: var(--t);
  box-shadow: 0 4px 16px var(--blue-glow);
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--blue-glow);
  filter: brightness(1.1);
}

/* ── SECTION HEADER ROW ───────────────────────────────────── */
.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

/* ── HERO CANVAS ──────────────────────────────────────────── */
#hero-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .5;
}

.hero > *:not(#hero-canvas) { position: relative; z-index: 1; }

/* ── TYPING CURSOR ────────────────────────────────────────── */
.typed-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--blue);
  margin-left: 4px;
  vertical-align: middle;
  animation: blink .8s step-end infinite;
}

@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ── SECTION DIVIDER ──────────────────────────────────────── */
.section { border-top: none; position: relative; }
.section::before {
  content: '';
  position: absolute;
  top: 0; left: 64px; right: 64px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ── HOVER GLOW ON TIMELINE CARDS ────────────────────────── */
.tl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 26px;
  transition: var(--t);
  position: relative;
  overflow: hidden;
}

.tl-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79,158,255,0.03), transparent);
  opacity: 0;
  transition: var(--t);
}

.tl-item:hover .tl-card::after { opacity: 1; }

/* ── PROJECT CARD ICON ────────────────────────────────────── */
.proj-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 4px;
  flex-shrink: 0;
}

.proj-icon.p1 { background: var(--blue-dim); color: var(--blue); }
.proj-icon.p2 { background: var(--purple-dim); color: var(--purple); }
.proj-icon.p3 { background: var(--amber-dim); color: var(--amber); }
.proj-icon.p4 { background: var(--green-dim); color: var(--green); }

.proj-header { display: flex; align-items: flex-start; gap: 14px; }
.proj-header-text { flex: 1; }

/* ── TOOLTIP ON SKILL TAGS ────────────────────────────────── */
.skill-tag { position: relative; }

/* ── FADE IN ──────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* stagger children */
.reveal.visible .tl-item:nth-child(1) { transition-delay: .05s; }
.reveal.visible .tl-item:nth-child(2) { transition-delay: .1s; }
.reveal.visible .tl-item:nth-child(3) { transition-delay: .15s; }
.reveal.visible .tl-item:nth-child(4) { transition-delay: .2s; }
.reveal.visible .tl-item:nth-child(5) { transition-delay: .25s; }

/* ── RESPONSIVE (handled by consolidated block at end) ────── */
@media (max-width: 1024px) {
  .hero { padding: 72px 40px; }
}

/* ═══════════════════════════════════════════════════════════
   CAREER PATH TIMELINE
═══════════════════════════════════════════════════════════ */

/* Journey stats bar */
.journey-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px 32px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 8px;
}

.js-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  min-width: 80px;
}

.js-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  font-family: var(--font);
}

.js-lbl {
  font-size: .65rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-top: 4px;
  font-family: var(--mono);
}

.js-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}

/* Career path container */
.career-path {
  position: relative;
  padding-left: 56px;
}

/* Vertical animated line */
.cp-line {
  position: absolute;
  left: 19px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: rgba(255,255,255,0.06);
  border-radius: 99px;
  overflow: hidden;
}

.cp-line-fill {
  width: 100%;
  height: 0%;
  background: linear-gradient(180deg, #4f9eff, #a78bfa, #22d3ee, #fbbf24, #34d399);
  border-radius: 99px;
  transition: height 1.8s cubic-bezier(.4,0,.2,1);
}

/* Each node row */
.cp-node {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
  position: relative;
}

.cp-node:last-child { margin-bottom: 0; }

/* Node dot */
.cp-node-dot {
  position: absolute;
  left: -46px;
  top: 18px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface2);
  border: 2px solid var(--nc, var(--blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  color: var(--nc, var(--blue));
  flex-shrink: 0;
  z-index: 2;
  transition: var(--t);
  cursor: pointer;
}

.cp-node-dot:hover,
.cp-node.active .cp-node-dot {
  background: var(--nc, var(--blue));
  color: #fff;
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--nc, var(--blue)) 20%, transparent);
  transform: scale(1.1);
}

/* Pulse ring on active node */
.cp-node-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--nc, var(--blue));
  opacity: 0;
  animation: none;
}

.cp-node:first-child .cp-node-ring {
  opacity: 1;
  animation: cpPulse 2s ease-in-out infinite;
}

@keyframes cpPulse {
  0%   { transform: scale(1);   opacity: .6; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* Card */
.cp-card {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), transform .25s var(--ease);
}

.cp-card:hover {
  border-color: var(--border-hi);
  transform: translateX(4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.cp-card.active {
  border-color: var(--border-hi);
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}

/* Left accent bar per color */
.cp-card[data-color="blue"]   { border-left: 3px solid #4f9eff; }
.cp-card[data-color="purple"] { border-left: 3px solid #a78bfa; }
.cp-card[data-color="cyan"]   { border-left: 3px solid #22d3ee; }
.cp-card[data-color="amber"]  { border-left: 3px solid #fbbf24; }
.cp-card[data-color="green"]  { border-left: 3px solid #34d399; }

.cp-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  cursor: pointer;
  user-select: none;
}

.cp-card-header:hover { background: rgba(255,255,255,0.02); }

.cp-card-left { flex: 1; min-width: 0; }

.cp-role {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.2px;
  margin-bottom: 3px;
}

.cp-company {
  font-size: .82rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.cp-loc { color: var(--text-3); font-weight: 400; }

.cp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.cp-tags span {
  font-size: .68rem;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 5px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-3);
  font-family: var(--mono);
  transition: var(--t);
}

.cp-tags span:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-dim); }

.cp-card-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
}

.cp-date-badge {
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 600;
  color: var(--dc, var(--blue));
  background: var(--dca, rgba(79,158,255,0.12));
  border: 1px solid color-mix(in srgb, var(--dc, var(--blue)) 30%, transparent);
  padding: 4px 12px;
  border-radius: 99px;
  white-space: nowrap;
}

.cp-current-badge {
  font-size: .65rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: .5px;
  animation: cpBlink 2s ease-in-out infinite;
}

@keyframes cpBlink {
  0%,100% { opacity: 1; }
  50%      { opacity: .5; }
}

.cp-chevron {
  color: var(--text-3);
  font-size: .8rem;
  transition: transform .25s var(--ease);
  margin-top: 4px;
}

.cp-chevron.open { transform: rotate(180deg); }

/* Expandable body */
.cp-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.4,0,.2,1), padding .3s var(--ease);
  border-top: 0px solid var(--border);
}

.cp-card-body.open {
  max-height: 600px;
  border-top: 1px solid var(--border);
  padding: 16px 22px 20px;
}

.cp-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cp-bullets li {
  font-size: .88rem;
  color: var(--text-2);
  line-height: 1.65;
  padding-left: 20px;
  position: relative;
}

.cp-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0; top: 1px;
  font-size: .8rem;
}

.cp-card[data-color="blue"]   .cp-bullets li::before { color: #4f9eff; }
.cp-card[data-color="purple"] .cp-bullets li::before { color: #a78bfa; }
.cp-card[data-color="cyan"]   .cp-bullets li::before { color: #22d3ee; }
.cp-card[data-color="amber"]  .cp-bullets li::before { color: #fbbf24; }
.cp-card[data-color="green"]  .cp-bullets li::before { color: #34d399; }

.cp-bullets li strong { color: var(--text); font-weight: 600; }

/* Light mode */
[data-theme="light"] .cp-card { background: #fff; }
[data-theme="light"] .cp-node-dot { background: #f8fafc; }
[data-theme="light"] .cp-line { background: rgba(0,0,0,0.06); }
[data-theme="light"] .journey-stats { background: #fff; }

/* ═══════════════════════════════════════════════════════════
   EDUCATION PATHWAY
═══════════════════════════════════════════════════════════ */
.edu-path { position: relative; padding-top: 20px; }

/* Animated horizontal line */
.edu-path-line {
  position: absolute;
  top: 40px;
  left: 5%;
  right: 5%;
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 99px;
  overflow: hidden;
  z-index: 0;
}

.edu-path-line-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #4f9eff, #a78bfa, #22d3ee, #fbbf24, #34d399);
  border-radius: 99px;
  transition: width 1.6s cubic-bezier(.4,0,.2,1);
}

/* Steps row */
.edu-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  position: relative;
  z-index: 1;
}

/* Single step */
.edu-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* Node circle */
.edu-step-node {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--surface2);
  border: 2px solid var(--ec, #4f9eff);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  color: var(--ec, #4f9eff);
  position: relative;
  cursor: pointer;
  transition: var(--t);
  z-index: 2;
  flex-shrink: 0;
}

.edu-step-node:hover,
.edu-step.active .edu-step-node {
  background: var(--ec, #4f9eff);
  color: #fff;
  box-shadow: 0 0 0 6px var(--ecb, rgba(79,158,255,0.15));
  transform: scale(1.1);
}

.edu-step-ring {
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  border: 2px solid var(--ec, #4f9eff);
  opacity: 0;
}

.edu-step:first-child .edu-step-ring {
  opacity: 1;
  animation: eduPulse 2.2s ease-in-out infinite;
}

@keyframes eduPulse {
  0%   { transform: scale(1);   opacity: .5; }
  100% { transform: scale(1.7); opacity: 0; }
}

/* Year label */
.edu-step-year {
  font-family: var(--mono);
  font-size: .62rem;
  color: var(--text-3);
  letter-spacing: .5px;
  text-align: center;
}

/* Card */
.edu-step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 16px 14px;
  text-align: center;
  width: 100%;
  cursor: pointer;
  transition: var(--t);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  position: relative;
  overflow: hidden;
}

.edu-step-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--ec, #4f9eff);
  transform: scaleX(0);
  transition: transform .3s var(--ease);
}

.edu-step-card:hover,
.edu-step.active .edu-step-card {
  border-color: var(--border-hi);
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.4);
}

.edu-step-card:hover::before,
.edu-step.active .edu-step-card::before {
  transform: scaleX(1);
}

.edu-step-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  margin-bottom: 4px;
}

.edu-step-degree {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.3px;
}

.edu-step-field {
  font-size: .68rem;
  color: var(--text-2);
  line-height: 1.3;
}

.edu-step-inst {
  font-size: .68rem;
  color: var(--text-3);
}

.edu-step-score {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid;
  margin-top: 4px;
}

/* Expandable detail */
.edu-step-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.4,0,.2,1);
  width: 100%;
  border-top: 0px solid var(--border);
}

.edu-step.active .edu-step-detail {
  max-height: 120px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 6px;
}

.edu-detail-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .68rem;
  color: var(--text-3);
  margin-bottom: 4px;
  text-align: left;
}

.edu-detail-row i { font-size: .6rem; color: var(--blue); flex-shrink: 0; }

/* Light mode */
[data-theme="light"] .edu-step-card { background: #fff; }
[data-theme="light"] .edu-step-node { background: #f8fafc; }
[data-theme="light"] .edu-path-line { background: rgba(0,0,0,0.06); }

/* Responsive */
@media (max-width: 900px) {
  .edu-steps { grid-template-columns: 1fr 1fr; }
  .edu-path-line { display: none; }
}
@media (max-width: 480px) {
  .edu-steps { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════
   RESUME VIEWER
═══════════════════════════════════════════════════════════ */
.resume-viewer {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  height: 88vh;
  min-height: 600px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

.resume-viewer iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

[data-theme="light"] .resume-viewer {
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

/* ═══════════════════════════════════════════════════════════
   ENHANCED PATENTS — hover flip effect
═══════════════════════════════════════════════════════════ */
.patent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
  padding: 24px;
}

.patent-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
  transition: var(--t);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: default;
}

.patent-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--purple));
  opacity: 0;
  transition: var(--t);
}

.patent-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.4);
  background: var(--surface);
}

.patent-card:hover::before { opacity: 1; }

.patent-card.is-granted {
  border-color: rgba(52,211,153,0.25);
  background: rgba(52,211,153,0.02);
}

.patent-card.is-granted::before {
  background: linear-gradient(180deg, var(--green), var(--cyan));
  opacity: 1;
}

.patent-card.is-granted:hover {
  box-shadow: 0 10px 28px rgba(52,211,153,0.15);
}

/* ═══════════════════════════════════════════════════════════
   ENHANCED PUBLICATIONS
═══════════════════════════════════════════════════════════ */
.pub-list {
  display: flex;
  flex-direction: column;
  padding: 8px 24px 24px;
}

.pub-card {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 16px;
  transition: var(--t);
  border-radius: var(--r);
  margin: 2px 0;
}

.pub-card:last-child { border-bottom: none; }

.pub-card:hover {
  background: rgba(255,255,255,0.02);
  border-color: transparent;
  transform: translateX(4px);
  box-shadow: -3px 0 0 var(--blue);
}

.pub-num {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--blue);
  min-width: 28px;
  padding-top: 2px;
  font-weight: 700;
  background: var(--blue-dim);
  border: 1px solid rgba(79,158,255,0.2);
  height: 24px;
  width: 28px;
  min-width: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ═══════════════════════════════════════════════════════════
   RESEARCH SECTION — CHARTS + INTERACTIVE
═══════════════════════════════════════════════════════════ */
.rs-top-row {
  display: grid;
  grid-template-columns: minmax(0, 180px) repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
  align-items: start;
}

/* Stat column */
.rs-stat-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rs-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--t);
}

.rs-stat:hover { border-color: var(--border-hi); transform: translateX(3px); }

.rs-stat-icon {
  width: 36px; height: 36px;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  flex-shrink: 0;
}

.rs-stat.s1 .rs-stat-icon { background: var(--blue-dim);   color: var(--blue); }
.rs-stat.s2 .rs-stat-icon { background: var(--green-dim);  color: var(--green); }
.rs-stat.s3 .rs-stat-icon { background: var(--purple-dim); color: var(--purple); }
.rs-stat.s4 .rs-stat-icon { background: var(--amber-dim);  color: var(--amber); }

.rs-stat-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  font-family: var(--font);
}

.rs-stat-lbl {
  font-size: .68rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-top: 3px;
  font-weight: 500;
}

/* Chart cards */
.rs-chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  transition: var(--t);
}

.rs-chart-card:hover { border-color: var(--border-hi); }

.rs-chart-title {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
  font-family: var(--mono);
}

.rs-chart-wrap {
  position: relative;
  width: 140px;
  height: 140px;
  margin: 0 auto 12px;
}

.rs-chart-wrap canvas { width: 100% !important; height: 100% !important; }

.rs-donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.rs-dc-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.rs-dc-sub {
  font-size: .6rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-top: 2px;
}

.rs-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  justify-content: center;
}

.rs-chart-legend .dl-item {
  font-size: .68rem;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 4px;
}

.rs-chart-legend .dl-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Patent domain badge */
.patent-domain {
  font-size: .62rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.2);
  color: var(--purple);
  font-family: var(--mono);
}

/* Publication type badges */
.pub-type-badge {
  font-size: .62rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.pub-type-badge.journal {
  background: rgba(79,158,255,0.1);
  border: 1px solid rgba(79,158,255,0.25);
  color: var(--blue);
}

.pub-type-badge.ieee {
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.25);
  color: var(--cyan);
}

.pub-type-badge.conf {
  background: rgba(251,191,36,0.1);
  border: 1px solid rgba(251,191,36,0.25);
  color: var(--amber);
}

@media (max-width: 1100px) {
  .rs-top-row { grid-template-columns: 1fr 1fr; }
  .rs-stat-col { flex-direction: row; flex-wrap: wrap; grid-column: 1 / -1; }
  .rs-stat { flex: 1; min-width: 140px; }
}

@media (max-width: 600px) {
  .rs-top-row { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════
   PROJECTS ANALYTICS ROW
═══════════════════════════════════════════════════════════ */
.proj-analytics {
  display: grid;
  grid-template-columns: minmax(0, 200px) repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.proj-chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  transition: var(--t);
}

.proj-chart-card:hover { border-color: var(--border-hi); }

.proj-chart-title {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
  font-family: var(--mono);
}

.proj-donut-wrap {
  position: relative;
  width: 130px; height: 130px;
  margin: 0 auto 12px;
}

.proj-donut-wrap canvas { width: 100% !important; height: 100% !important; }

.proj-donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.pdc-num { font-size: 1.4rem; font-weight: 800; color: var(--text); line-height: 1; }
.pdc-sub { font-size: .6rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .5px; margin-top: 2px; }

.proj-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 10px;
  justify-content: center;
}

.proj-chart-legend .dl-item { font-size: .67rem; color: var(--text-2); display: flex; align-items: center; gap: 4px; }
.proj-chart-legend .dl-dot  { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }

@media (max-width: 900px) {
  .proj-analytics { grid-template-columns: 1fr 1fr; }
  .proj-analytics .proj-chart-card:first-child { grid-column: 1 / -1; }
}

@media (max-width: 540px) {
  .proj-analytics { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════
   CONSOLIDATED RESPONSIVE — overrides all above
═══════════════════════════════════════════════════════════ */

/* Tablet */
@media (max-width: 1200px) {
  :root { --sidebar-w: 240px; }
  .hero-layout { grid-template-columns: minmax(0,1fr); }
  .hero-right { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
  .skills-master { grid-template-columns: minmax(0,1fr); }
  .skills-bars-panel { position: static; }
  .rs-top-row { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .rs-stat-col { flex-direction: row; flex-wrap: wrap; grid-column: 1 / -1; }
  .rs-stat { flex: 1; min-width: 130px; }
  .proj-analytics { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .proj-analytics .proj-chart-card:first-child { grid-column: 1 / -1; }
}

/* Mobile */
@media (max-width: 860px) {
  :root { --sidebar-w: 0px; }
  .sidebar { transform: translateX(-100%); width: 260px; }
  .sidebar.open { transform: translateX(0); box-shadow: 8px 0 40px rgba(0,0,0,0.7); }
  .mobile-header { display: flex; }
  .main { margin-left: 0; max-width: 100vw; }
  .hero { padding: 80px 20px 48px; min-height: auto; padding-top: 80px; }
  .section { padding: 48px 20px; }
  .section::before { left: 20px; right: 20px; }
  .hero-right { grid-template-columns: minmax(0,1fr); }
  .hero-stat-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .projects-grid { grid-template-columns: minmax(0,1fr); }
  .proj-card.featured .proj-body { grid-template-columns: minmax(0,1fr); }
  .proj-card.featured .proj-features-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .rs-top-row { grid-template-columns: minmax(0,1fr); }
  .proj-analytics { grid-template-columns: minmax(0,1fr); }
  .edu-steps { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .edu-path-line { display: none; }
  .hero-layout { gap: 24px; }
  .theme-toggle { bottom: 16px; right: 16px; }
}

@media (max-width: 540px) {
  .hero-stat-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .proj-card.featured .proj-features-grid { grid-template-columns: minmax(0,1fr); }
  .edu-steps { grid-template-columns: minmax(0,1fr); }
  .hero-name { font-size: 2.2rem; }
  .section-title { font-size: 1.5rem; }
}