/* =========================================================
   VIVEK KARTHA — Portfolio v2
   Aesthetic: bright · modern · data-forward · confident
   Palette: indigo, coral, mint, amber, purple on white
   ========================================================= */

:root {
  /* Color tokens */
  --bg:           #ffffff;
  --bg-soft:      #f8fafc;
  --bg-tint:      #f5f3ff;     /* soft lavender section bg */
  --bg-tint-2:    #ecfeff;     /* soft cyan section bg */

  --ink:          #0f172a;     /* primary text */
  --ink-soft:     #475569;     /* secondary text */
  --ink-mute:     #94a3b8;     /* tertiary text */
  --rule:         #e2e8f0;

  --indigo:       #4f46e5;
  --indigo-soft:  #818cf8;
  --indigo-bg:    #eef2ff;

  --coral:        #f43f5e;
  --coral-soft:   #fb7185;
  --coral-bg:     #fff1f2;

  --mint:         #10b981;
  --mint-soft:    #34d399;
  --mint-bg:      #ecfdf5;

  --amber:        #f59e0b;
  --amber-soft:   #fbbf24;
  --amber-bg:     #fffbeb;

  --purple:       #a855f7;
  --purple-bg:    #faf5ff;

  --teal:         #14b8a6;
  --teal-bg:      #f0fdfa;

  /* Typography */
  --font-display: 'Bricolage Grotesque', 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --max:          1240px;
  --gutter:       clamp(1.25rem, 4vw, 3rem);

  /* Effects */
  --shadow-sm:    0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md:    0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 10px 15px -3px rgba(15, 23, 42, 0.08);
  --shadow-lg:    0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 20px 25px -5px rgba(15, 23, 42, 0.10);
  --shadow-glow:  0 0 60px rgba(79, 70, 229, 0.15);

  --radius-sm:    8px;
  --radius-md:    14px;
  --radius-lg:    22px;
  --radius-xl:    32px;

  --ease:         cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  position: relative;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* =========================================================
   DECORATIVE MESH BACKGROUND
   ========================================================= */
.mesh-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.mesh-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}

.mesh-blob-1 {
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #818cf8 0%, transparent 70%);
}

.mesh-blob-2 {
  top: 30%;
  left: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #fb7185 0%, transparent 70%);
  opacity: 0.35;
}

.mesh-blob-3 {
  top: 60%;
  right: -100px;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #34d399 0%, transparent 70%);
  opacity: 0.3;
}

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.nav.scrolled {
  border-bottom-color: var(--rule);
  background: rgba(255, 255, 255, 0.92);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}

.nav-brand-mark {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--indigo), var(--coral));
  color: white;
  border-radius: 9px;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.nav-brand-text {
  font-size: 1rem;
  letter-spacing: -0.01em;
}

@media (max-width: 600px) {
  .nav-brand-text { display: none; }
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.5vw, 1.75rem);
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s var(--ease);
}

.nav-links a:hover { color: var(--ink); }

.nav-cta {
  background: var(--ink);
  color: white !important;
  padding: 0.55rem 1rem;
  border-radius: 100px;
  transition: all 0.25s var(--ease) !important;
}

.nav-cta:hover {
  background: var(--indigo) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

@media (max-width: 700px) {
  .nav-cta { display: none; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 7rem var(--gutter) 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--mint-bg);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 1.75rem;
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 1.75rem;
  font-variation-settings: 'opsz' 96, 'wdth' 100;
}

.hero-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  animation: rise 0.9s var(--ease) forwards;
}

.hero-line-grad {
  background: linear-gradient(135deg, #4f46e5 0%, #a855f7 50%, #f43f5e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation-delay: 0.15s;
  display: inline-block;
}

.hero-line-script {
  font-style: italic;
  font-weight: 400;
  color: var(--ink-soft);
  animation-delay: 0.3s;
}

.hero-line:nth-child(4) { animation-delay: 0.45s; }

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 56ch;
  margin-bottom: 2rem;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.6s forwards;
}

.hero-sub strong { color: var(--ink); font-weight: 700; }

.hero-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.75s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 100px;
  transition: all 0.25s var(--ease);
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--ink);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--indigo);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
}

.btn-primary svg { transition: transform 0.25s var(--ease); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
  background: white;
  color: var(--ink);
  border-color: var(--rule);
  box-shadow: var(--shadow-sm);
}

.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Hero Visual: Chart card */
.hero-visual {
  position: relative;
  opacity: 0;
  animation: rise 1s var(--ease) 0.4s forwards;
}

.viz-card {
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  z-index: 2;
}

.viz-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 0.82rem;
}

.viz-card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--ink);
}

.viz-card-dot {
  width: 8px;
  height: 8px;
  background: var(--indigo);
  border-radius: 50%;
}

.viz-card-period {
  color: var(--ink-mute);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.viz-chart {
  width: 100%;
  height: 220px;
  margin: 0.5rem 0 1rem;
}

.viz-grid line {
  stroke: var(--rule);
  stroke-width: 1;
  stroke-dasharray: 2 4;
}

.viz-line {
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: drawLine 2.2s var(--ease) 0.5s forwards;
}

@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

.viz-area {
  opacity: 0;
  animation: fadeIn 1.5s var(--ease) 1.5s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.viz-marker {
  opacity: 0;
  animation: popIn 0.5s var(--ease-spring) forwards;
}

.viz-marker-start { animation-delay: 0.8s; }
.viz-marker-end { animation-delay: 2.5s; }

@keyframes popIn {
  0% { opacity: 0; transform: scale(0); }
  100% { opacity: 1; transform: scale(1); }
}

.viz-labels {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

.viz-label { flex: 1; }

.viz-label-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.viz-label-end .viz-label-num {
  background: linear-gradient(135deg, var(--indigo), var(--coral));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.viz-label-text {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.viz-label-arrow {
  font-size: 1.2rem;
  color: var(--ink-mute);
}

/* Floating cards */
.float-card {
  position: absolute;
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  z-index: 3;
  animation: float 5s var(--ease) infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float-card-1 {
  top: 50%;
  left: -50px;
  animation-delay: 0.5s;
}

.float-card-2 {
  bottom: -16px;
  right: -10px;
  animation-delay: 1.5s;
}

.float-card-icon {
  font-size: 1.4rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  border-radius: 10px;
}

.float-card-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.2;
}

.float-card-label {
  font-size: 0.7rem;
  color: var(--ink-soft);
}

@media (max-width: 900px) {
  .float-card-1 { left: 10px; }
  .float-card-2 { right: 10px; }
}

/* =========================================================
   STATS STRIP
   ========================================================= */
.stats {
  max-width: var(--max);
  margin: 2rem auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.stat {
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.25s var(--ease);
}

.stat:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg { width: 22px; height: 22px; }

.stat-icon-indigo { background: var(--indigo-bg); color: var(--indigo); }
.stat-icon-coral  { background: var(--coral-bg); color: var(--coral); }
.stat-icon-mint   { background: var(--mint-bg); color: var(--mint); }
.stat-icon-amber  { background: var(--amber-bg); color: var(--amber); }

.stat-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}

.stat-unit {
  font-size: 1rem;
  color: var(--ink-soft);
  margin-left: 0.15em;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 0.3rem;
}

/* =========================================================
   SECTIONS
   ========================================================= */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 6rem var(--gutter);
}

.section-head {
  text-align: center;
  margin-bottom: 4rem;
}

.section-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--indigo);
  background: var(--indigo-bg);
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 0.75rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 auto;
}

/* =========================================================
   ABOUT
   ========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
}

.about-visual {
  position: sticky;
  top: 6rem;
}

@media (max-width: 900px) {
  .about-visual { position: static; }
}

.profile-frame {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 0 auto 2rem;
}

.profile-ring {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--indigo), var(--coral), var(--amber), var(--mint), var(--indigo));
  animation: spin 12s linear infinite;
  filter: blur(2px);
  opacity: 0.7;
}

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

.profile-photo {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: white;
  overflow: hidden;
  border: 4px solid white;
  z-index: 2;
  box-shadow: var(--shadow-lg);
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--indigo) 0%, var(--coral) 100%);
  color: white;
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 700;
}

.profile-badge {
  position: absolute;
  background: white;
  border: 1px solid var(--rule);
  border-radius: 100px;
  padding: 0.4rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  z-index: 3;
  animation: float 5s var(--ease) infinite;
}

.profile-badge-1 { top: -8px; right: -30px; animation-delay: 0s; }
.profile-badge-2 { top: 50%; left: -50px; animation-delay: 1s; }
.profile-badge-3 { bottom: 10px; right: -40px; animation-delay: 2s; }

@media (max-width: 500px) {
  .profile-badge-1 { right: 0; }
  .profile-badge-2 { left: 0; }
  .profile-badge-3 { right: 0; }
}

.about-details {
  margin-top: 2rem;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.detail-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}

.detail-row:last-child { border: none; padding-bottom: 0; }
.detail-row:first-child { padding-top: 0; }

.detail-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.detail-value {
  font-size: 0.92rem;
  color: var(--ink);
  font-weight: 500;
}

.about-body p {
  margin-bottom: 1.5rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.75;
}

.about-body .lead {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.about-body strong { color: var(--ink); font-weight: 700; }

.hl {
  position: relative;
  display: inline-block;
  padding: 0 0.15em;
  border-radius: 4px;
  font-weight: 600;
}

.hl-indigo { background: var(--indigo-bg); color: var(--indigo); }
.hl-coral  { background: var(--coral-bg); color: var(--coral); }
.hl-mint   { background: var(--mint-bg); color: var(--mint); }

/* =========================================================
   WORK / PROJECTS
   ========================================================= */
.section-work {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-tint) 100%);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.section-work .section-head,
.section-work .projects {
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.projects {
  display: grid;
  gap: 2rem;
}

.project {
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  transition: all 0.3s var(--ease);
  box-shadow: var(--shadow-sm);
}

.project:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

@media (max-width: 850px) {
  .project { grid-template-columns: 1fr; }
}

.project-visual {
  position: relative;
  min-height: 280px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.project-visual-gradient-1 {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
}

.project-visual-gradient-2 {
  background: linear-gradient(135deg, #f59e0b 0%, #f43f5e 50%, #d946ef 100%);
}

.project-visual-gradient-3 {
  background: linear-gradient(135deg, #14b8a6 0%, #10b981 50%, #06b6d4 100%);
}

.project-mock {
  width: 100%;
  max-width: 360px;
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.2));
}

.project-body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.project-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.3rem 0.65rem;
  border-radius: 100px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.project-pill-active { background: var(--mint-bg); color: var(--mint); }
.project-pill-done   { background: var(--indigo-bg); color: var(--indigo); }
.project-pill-ongoing { background: var(--amber-bg); color: var(--amber); }

.project-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-mute);
}

.project-type {
  font-size: 0.75rem;
  color: var(--ink-mute);
  margin-left: auto;
}

.project-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 1rem;
}

.project-desc {
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex: 1;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-stack span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.7rem;
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: 100px;
  color: var(--ink-soft);
  font-weight: 500;
}

/* =========================================================
   EXPERIENCE / TIMELINE
   ========================================================= */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline-line {
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--indigo) 0%, var(--coral) 50%, var(--mint) 100%);
  border-radius: 2px;
}

.role {
  position: relative;
  padding: 1.5rem 0 2.5rem 2rem;
}

.role:last-child { padding-bottom: 0; }

.role-dot {
  position: absolute;
  left: -2rem;
  top: 2rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 2px currentColor;
}

.role-dot-indigo { background: var(--indigo); color: var(--indigo); }
.role-dot-coral  { background: var(--coral); color: var(--coral); }
.role-dot-mint   { background: var(--mint); color: var(--mint); }

.role-period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}

.role-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.role-company {
  margin-bottom: 0.85rem;
  font-size: 0.92rem;
}

.role-company-name {
  font-weight: 600;
  color: var(--ink);
}

.role-company-tag {
  color: var(--ink-soft);
  margin-left: 0.4rem;
}

.role-body p {
  color: var(--ink-soft);
  line-height: 1.7;
  font-size: 0.96rem;
}

/* =========================================================
   STACK
   ========================================================= */
.section-stack {
  background: linear-gradient(180deg, var(--bg-tint) 0%, var(--bg) 100%);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.section-stack .section-head,
.section-stack .stack-grid {
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.stack-card {
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.stack-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--card-color, var(--indigo));
  opacity: 0.8;
}

.stack-card-indigo { --card-color: var(--indigo); }
.stack-card-coral  { --card-color: var(--coral); }
.stack-card-mint   { --card-color: var(--mint); }
.stack-card-amber  { --card-color: var(--amber); }
.stack-card-purple { --card-color: var(--purple); }
.stack-card-teal   { --card-color: var(--teal); }

.stack-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.stack-icon {
  font-size: 1.6rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  border-radius: 12px;
  margin-bottom: 1rem;
}

.stack-label {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.stack-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.stack-chips span {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  background: var(--bg-soft);
  color: var(--ink);
  border-radius: 100px;
  transition: all 0.2s var(--ease);
}

.stack-card:hover .stack-chips span {
  background: color-mix(in srgb, var(--card-color) 15%, var(--bg-soft));
  color: var(--card-color);
  border-color: color-mix(in srgb, var(--card-color) 30%, transparent);
}

/* =========================================================
   CTA / CONTACT
   ========================================================= */
.cta-section {
  max-width: var(--max);
  margin: 4rem auto 6rem;
  padding: 0 var(--gutter);
}

.cta-card {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
  border-radius: var(--radius-xl);
  padding: clamp(2.5rem, 6vw, 5rem);
  position: relative;
  overflow: hidden;
  color: white;
}

.cta-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.cta-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
}

.cta-blob-1 {
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.4), transparent 70%);
}

.cta-blob-2 {
  bottom: -100px;
  left: -50px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.4), transparent 70%);
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.section-num-light {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #c7d2fe 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cta-sub {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2.5rem;
  max-width: 56ch;
}

.cta-sub strong {
  color: white;
  font-weight: 700;
}

.cta-links {
  display: grid;
  gap: 0.75rem;
}

.cta-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  transition: all 0.25s var(--ease);
  backdrop-filter: blur(8px);
}

.cta-link:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateX(4px);
}

.cta-link-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  flex-shrink: 0;
}

.cta-link-icon svg { width: 20px; height: 20px; }

.cta-link-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0.15rem;
}

.cta-link-value {
  font-size: 1rem;
  font-weight: 500;
  color: white;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  border-top: 1px solid var(--rule);
  padding: 1.5rem var(--gutter);
}

.footer-row {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--ink-mute);
}

.footer-top {
  color: var(--ink-soft);
  font-weight: 500;
  transition: color 0.2s var(--ease);
}

.footer-top:hover { color: var(--indigo); }

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

::selection {
  background: var(--indigo);
  color: white;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================
   DARK MODE TOGGLE BUTTON
   ========================================================= */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--rule);
  background: var(--bg-soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  transition: all 0.2s var(--ease);
  flex-shrink: 0;
  margin-left: 0.5rem;
}

.theme-toggle:hover {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--indigo);
  transform: rotate(15deg);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
  transition: all 0.3s var(--ease);
}

/* Show sun in dark mode, moon in light mode */
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="dark"]  .icon-sun  { display: block; }

/* =========================================================
   NAV ACTIVE LINK
   ========================================================= */
.nav-links a.active {
  color: var(--indigo);
}

.nav-links a.active::after {
  transform: scaleX(1);
}

/* =========================================================
   THEME TRANSITION (smooth toggle)
   ========================================================= */
.theme-transitioning,
.theme-transitioning *,
.theme-transitioning *::before,
.theme-transitioning *::after {
  transition:
    background-color 300ms ease,
    border-color 300ms ease,
    color 300ms ease,
    box-shadow 300ms ease !important;
  transition-delay: 0ms !important;
}

/* =========================================================
   DARK MODE VARIABLES
   ========================================================= */
[data-theme="dark"] {
  --bg:        #0f172a;
  --bg-soft:   #1e293b;
  --bg-tint:   #16103a;
  --bg-tint-2: #0c1a2e;
  --ink:       #f1f5f9;
  --ink-soft:  #94a3b8;
  --ink-mute:  #475569;
  --rule:      #334155;

  --indigo-bg: rgba(79,  70, 229, 0.18);
  --coral-bg:  rgba(244, 63,  94, 0.15);
  --mint-bg:   rgba(16, 185, 129, 0.13);
  --amber-bg:  rgba(245,158,  11, 0.13);
  --purple-bg: rgba(168, 85, 247, 0.13);
  --teal-bg:   rgba(20, 184, 166, 0.13);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3),  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.35), 0 10px 15px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4), 0 20px 25px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 60px rgba(79, 70, 229, 0.3);
}

/* Nav background in dark mode */
[data-theme="dark"] .nav {
  background: rgba(15, 23, 42, 0.80);
}
[data-theme="dark"] .nav.scrolled {
  background: rgba(15, 23, 42, 0.96);
}

/* Mesh blobs: slightly more visible in dark */
[data-theme="dark"] .mesh-blob-1 { opacity: 0.65; }
[data-theme="dark"] .mesh-blob-2 { opacity: 0.45; }
[data-theme="dark"] .mesh-blob-3 { opacity: 0.40; }

/* Primary buttons stay indigo in dark mode */
[data-theme="dark"] .btn-primary {
  background: var(--indigo);
  color: #fff;
}
[data-theme="dark"] .btn-primary:hover {
  background: var(--indigo-soft);
}

/* Nav CTA in dark mode */
[data-theme="dark"] .nav-cta {
  background: var(--indigo) !important;
  color: #fff !important;
}

/* Stack card icon uses card color as tint in dark mode */
[data-theme="dark"] .stack-icon {
  background: var(--bg);
}

/* Viz card */
[data-theme="dark"] .viz-card {
  background: var(--bg-soft);
}

/* Profile ring — keep vibrant */
[data-theme="dark"] .profile-ring {
  opacity: 0.9;
}

/* Hero tag green pill in dark mode */
[data-theme="dark"] .hero-tag {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.25);
}

/* CTA card blobs slightly brighter in dark */
[data-theme="dark"] .cta-blob-1 { opacity: 0.55; }
[data-theme="dark"] .cta-blob-2 { opacity: 0.45; }

/* Stack card icon SVG inherits color */
.stack-icon svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* Stack card color-matched icons */
.stack-card-indigo .stack-icon { color: var(--indigo); }
.stack-card-coral  .stack-icon { color: var(--coral); }
.stack-card-mint   .stack-icon { color: var(--mint); }
.stack-card-amber  .stack-icon { color: var(--amber); }
.stack-card-purple .stack-icon { color: var(--purple); }
.stack-card-teal   .stack-icon { color: var(--teal); }

/* Fix float card z-index on mobile */
@media (max-width: 600px) {
  .float-card { display: none; }
}