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

:root {
  --bg: #07070E;
  --bg-card: #0F0F1A;
  --bg-lift: #141424;
  --border: rgba(255, 255, 255, 0.07);
  --border-hi: rgba(255, 255, 255, 0.14);
  --text: #EEEEF2;
  --muted: #8A8AA8;
  --subtle: #4A4A62;
  --accent: #4FC3F7;
  --accent-dim: #1A3A4A;
  --accent2: #A78BFA;
  --accent2-dim: #2A1A4A;
  --accent3: #34D399;
  --accent3-dim: #0D2A20;
  --display: 'Space Grotesk', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --r: 10px;
  --r-lg: 16px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Hide everything while preloading */
body.is-preload * {
  animation: none !important;
  transition: none !important;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── INTRO (in-flow, Massively-style) ─────────────── */
/* Sits at the top of the page in normal document flow.
   Content (nav, hero, etc.) follows beneath it.
   JS adds/removes .hidden on scroll — fades in/out.   */
#intro-overlay {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  text-align: center;
  padding: 2rem;
  /* subtle grid pattern */
  background-image:
    linear-gradient(rgba(79, 195, 247, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 195, 247, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* When scrolled down: fade out and slide up slightly */
#intro-overlay.hidden {
  opacity: 0;
  transform: translateY(-30px);
  pointer-events: none;
}

body.is-preload #intro-overlay>* {
  opacity: 0;
  transform: translateY(20px);
}

#intro-overlay .intro-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}

#intro-overlay .intro-name {
  font-family: var(--display);
  font-size: clamp(3rem, 9vw, 7.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text);
  margin-bottom: 1.5rem;
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease 0.25s, transform 0.7s ease 0.25s;
}

#intro-overlay .intro-name span {
  color: var(--accent);
}

#intro-overlay .intro-bio {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 520px;
  line-height: 1.75;
  margin-bottom: 2rem;
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease 0.45s, transform 0.7s ease 0.45s;
}

#intro-overlay .intro-roles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  justify-content: center;
  margin-bottom: 3rem;
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease 0.6s, transform 0.7s ease 0.6s;
}

#intro-overlay .intro-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  color: var(--subtle);
  text-transform: uppercase;
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease 0.85s, transform 0.7s ease 0.85s;
  animation: bounce 2s ease-in-out infinite;
}

body.is-preload #intro-overlay .intro-eyebrow,
body.is-preload #intro-overlay .intro-name,
body.is-preload #intro-overlay .intro-bio,
body.is-preload #intro-overlay .intro-roles,
body.is-preload #intro-overlay .intro-scroll {
  opacity: 0;
  transform: translateY(20px);
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(6px);
  }
}

.intro-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--subtle);
  border-bottom: 2px solid var(--subtle);
  transform: rotate(45deg);
}

/* ── NAV ──────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 60px;
  background: rgba(7, 7, 14, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

.mobile-socials {
  display: none;
}

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

.nav-social a {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  font-weight: 500;
  transition: color 0.2s, border-color 0.2s, background 0.2s, box-shadow 0.2s, transform 0.15s;
}

/* LinkedIn — cyan blue */
.nav-social a:nth-child(1) {
  color: #4FC3F7;
  border: 1px solid rgba(79, 195, 247, 0.35);
  background: rgba(79, 195, 247, 0.06);
}

.nav-social a:nth-child(1):hover {
  background: rgba(79, 195, 247, 0.14);
  border-color: rgba(79, 195, 247, 0.7);
  box-shadow: 0 0 12px rgba(79, 195, 247, 0.25);
  transform: translateY(-1px);
}

/* GitHub — violet purple */
.nav-social a:nth-child(2) {
  color: #A78BFA;
  border: 1px solid rgba(167, 139, 250, 0.35);
  background: rgba(167, 139, 250, 0.06);
}

.nav-social a:nth-child(2):hover {
  background: rgba(167, 139, 250, 0.14);
  border-color: rgba(167, 139, 250, 0.7);
  box-shadow: 0 0 12px rgba(167, 139, 250, 0.25);
  transform: translateY(-1px);
}

/* Email — emerald green */
.nav-social a:nth-child(3) {
  color: #34D399;
  border: 1px solid rgba(52, 211, 153, 0.35);
  background: rgba(52, 211, 153, 0.06);
}

.nav-social a:nth-child(3):hover {
  background: rgba(52, 211, 153, 0.14);
  border-color: rgba(52, 211, 153, 0.7);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.25);
  transform: translateY(-1px);
}

.nav-social a svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

/* Mobile hamburger toggle icon button */
.nav-toggle-label {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 14px;
  cursor: pointer;
  z-index: 110;
}

.nav-toggle-label span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--text);
  border-radius: 2px;
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.2s ease;
}

/* ── HERO ─────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 6rem 2.5rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.hero-headline {
  font-family: var(--display);
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.hero-headline .hl {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-roles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-bottom: 3rem;
}

.role-pill {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.85rem;
  border-radius: 99px;
  border: 1px solid;
  text-transform: uppercase;
}

.role-pill.analyst {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.role-pill.engineer {
  border-color: var(--accent2);
  color: var(--accent2);
  background: var(--accent2-dim);
}

.role-pill.scientist {
  border-color: var(--accent3);
  color: var(--accent3);
  background: var(--accent3-dim);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* CTA strip between impact and about */
.cta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  padding: 2.5rem 2.5rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}


.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--display);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.7rem 1.4rem;
  border-radius: var(--r);
  border: 1px solid var(--border-hi);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #07070E;
}

.btn-primary:hover {
  background: #81D4FA;
  border-color: #81D4FA;
  color: #07070E;
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--bg-lift);
  text-decoration: none;
}

/* ── IMPACT TICKER ────────────────────────────────── */
#impact {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 2.5rem;
}

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

.impact-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 2rem;
  text-align: center;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0;
}

.impact-item {
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--border);
  text-align: center;
}

.impact-item:last-child {
  border-right: none;
}

.impact-number {
  font-family: var(--display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text);
  display: block;
  margin-bottom: 0.4rem;
}

.impact-number .suffix {
  font-size: 0.6em;
  color: var(--accent);
  font-weight: 600;
}

.impact-desc {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ── ABOUT ────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }
}

.about-text h2 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.about-text h2 em {
  font-style: normal;
  color: var(--accent);
}

.about-text p {
  color: var(--muted);
  margin-bottom: 1rem;
  font-size: 0.975rem;
}

.about-image-wrapper {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border-hi);
  aspect-ratio: 1 / 1;
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.about-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.about-image-wrapper:hover .about-image {
  transform: scale(1.04);
}

.about-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stack-group h4 {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--subtle);
  margin-bottom: 0.6rem;
}

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

.tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border-radius: 5px;
  background: var(--bg-lift);
  border: 1px solid var(--border-hi);
  color: var(--text);
  letter-spacing: 0.02em;
}

/* ── SECTION CHROME ───────────────────────────────── */
.section-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 0.9375rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.section-eyebrow {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.section-title {
  font-family: var(--display);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.section-divider {
  display: none;
}

/* ── ROLE TABS ────────────────────────────────────── */
.role-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.role-tab {
  font-family: var(--display);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.6rem 1.25rem;
  border-radius: var(--r) var(--r) 0 0;
  cursor: pointer;
  border: none;
  background: transparent;
  position: relative;
  bottom: -1px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s;
  color: var(--muted);
}

.role-tab:hover {
  color: var(--text);
}

.role-tab.active-analyst {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.role-tab.active-engineer {
  color: var(--accent2);
  border-bottom-color: var(--accent2);
}

.role-tab.active-scientist {
  color: var(--accent3);
  border-bottom-color: var(--accent3);
}

.role-panel {
  display: none;
}

.role-panel.active {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 900px) {
  .role-panel.active {
    display: grid;
    grid-template-columns: 2.8fr 1fr;
    gap: 3rem;
    align-items: start;
  }
}

.panel-left {
  display: flex;
  flex-direction: column;
}

.panel-right {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: 1.75rem;
}

.sidebar-skill-group h4 {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

.sidebar-skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* ── EXP CARDS ────────────────────────────────────── */
.exp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}

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

.exp-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.exp-title {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.exp-company {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.exp-period {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--subtle);
  letter-spacing: 0.06em;
  white-space: nowrap;
  margin-top: 0.3rem;
}

.exp-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.exp-bullets li {
  font-size: 0.9rem;
  color: var(--muted);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.6;
}

.exp-bullets li::before {
  content: '\25B8';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  top: 0.25em;
}

.exp-bullets .highlight {
  color: var(--text);
  font-weight: 500;
}

.panel-engineer .exp-bullets li::before {
  color: var(--accent2);
}

.panel-scientist .exp-bullets li::before {
  color: var(--accent3);
}

/* ── PROJECT GRID ─────────────────────────────────── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  align-items: stretch;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
  transition: border-color 0.25s, transform 0.2s;
}

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

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  /* Reserve height for 2 tag rows so titles align across all cards.
     One row ≈ 22px (tag height) + 5.6px gap = ~27.6px × 2 ≈ 56px */
  min-height: 3.6rem;
  align-content: flex-start;
}

.ptag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  padding: 0.28rem 0.65rem;
  border-radius: 6px;
  text-transform: uppercase;
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: inline-flex;
  align-items: center;
}

.ptag.analyst {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(79, 195, 247, 0.15);
}

.ptag.analyst:hover {
  background: rgba(79, 195, 247, 0.18);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 195, 247, 0.15);
}

.ptag.engineer {
  background: var(--accent2-dim);
  color: var(--accent2);
  border: 1px solid rgba(167, 139, 250, 0.15);
}

.ptag.engineer:hover {
  background: rgba(167, 139, 250, 0.18);
  border-color: var(--accent2);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(167, 139, 250, 0.15);
}

.ptag.scientist {
  background: var(--accent3-dim);
  color: var(--accent3);
  border: 1px solid rgba(52, 211, 153, 0.15);
}

.ptag.scientist:hover {
  background: rgba(52, 211, 153, 0.18);
  border-color: var(--accent3);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(52, 211, 153, 0.15);
}

.ptag.tool {
  background: var(--bg-lift);
  color: var(--muted);
  border: 1px solid var(--border-hi);
}

.ptag.tool:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--muted);
  color: var(--text);
  transform: translateY(-1px);
}

/* Role-based sidebar highlights to match active panel colors */
.panel-analyst .ptag.tool {
  border-color: rgba(79, 195, 247, 0.1);
}

.panel-analyst .ptag.tool:hover {
  background: rgba(79, 195, 247, 0.08);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 4px 12px rgba(79, 195, 247, 0.15);
  transform: translateY(-2px);
}

.panel-engineer .ptag.tool {
  border-color: rgba(167, 139, 250, 0.1);
}

.panel-engineer .ptag.tool:hover {
  background: rgba(167, 139, 250, 0.08);
  border-color: var(--accent2);
  color: var(--accent2);
  box-shadow: 0 4px 12px rgba(167, 139, 250, 0.15);
  transform: translateY(-2px);
}

.panel-scientist .ptag.tool {
  border-color: rgba(52, 211, 153, 0.1);
}

.panel-scientist .ptag.tool:hover {
  background: rgba(52, 211, 153, 0.08);
  border-color: var(--accent3);
  color: var(--accent3);
  box-shadow: 0 4px 12px rgba(52, 211, 153, 0.15);
  transform: translateY(-2px);
}

/* Style the sidebar skill headers dynamically based on parent role */
.panel-analyst .sidebar-skill-group h4 {
  border-bottom-color: rgba(79, 195, 247, 0.2);
  color: var(--accent);
}

.panel-engineer .sidebar-skill-group h4 {
  border-bottom-color: rgba(167, 139, 250, 0.2);
  color: var(--accent2);
}

.panel-scientist .sidebar-skill-group h4 {
  border-bottom-color: rgba(52, 211, 153, 0.2);
  color: var(--accent3);
}

.project-title {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  /* Reserve 2-line height so titles always align across cards
     1.05rem × 1.3 × 2 lines ≈ 2.73rem */
  min-height: 2.75rem;
  display: flex;
  align-items: flex-start;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--muted);
  flex: 1;
  line-height: 1.65;
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.project-desc li {
  padding-left: 1.1rem;
  position: relative;
}

.project-desc li::before {
  content: '\25B8';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.65rem;
  top: 0.3em;
}

.project-impact {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent3);
  background: var(--accent3-dim);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  border: 1px solid rgba(52, 211, 153, 0.15);
}

.project-links {
  display: flex;
  gap: 0.4rem;
  flex-wrap: nowrap;
  padding-top: 0.25rem;
  border-top: 1px solid var(--border);
}

.plink {
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--border-hi);
  background: var(--bg-lift);
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}

.plink:hover {
  color: var(--accent);
  border-color: rgba(79, 195, 247, 0.4);
  background: rgba(79, 195, 247, 0.06);
  transform: translateY(-1px);
  text-decoration: none;
}

.plink svg {
  width: 13px;
  height: 13px;
  opacity: 0.7;
}

.plink:hover svg {
  opacity: 1;
}

/* ── SKILLS ───────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
}

.skill-group-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.cert-items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 500px) {
  .cert-items {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .cert-items {
    grid-template-columns: repeat(3, 1fr);
  }
}

.cert-link {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.6rem 0.8rem;
  border-radius: 5px;
  background: var(--bg-lift);
  border: 1px solid var(--border-hi);
  color: var(--accent);
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.4;
  height: 100%;
}

.cert-link:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  text-decoration: none;
}

/* ── CONTACT ──────────────────────────────────────── */
#contact {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}

.contact-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2.5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.contact-text h2 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.contact-text p {
  color: var(--muted);
  font-size: 0.975rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-end;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.contact-link:hover {
  color: var(--accent);
  text-decoration: none;
}

/* ── COFFEE CHAT ───────────────────────────────── */
.coffee-chat {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0a0a18 0%, #0d1a2a 40%, #0a1a14 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4rem 1.5rem;
  text-align: center;
}

.coffee-chat::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(79, 195, 247, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 50%, rgba(52, 211, 153, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.coffee-inner {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.coffee-icon {
  font-size: 2.8rem;
  animation: steam 3s ease-in-out infinite;
  display: inline-block;
}

@keyframes steam {

  0%,
  100% {
    transform: translateY(0) rotate(-3deg);
  }

  50% {
    transform: translateY(-6px) rotate(3deg);
  }
}

.coffee-eyebrow {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.coffee-heading {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
}

.coffee-heading span {
  background: linear-gradient(90deg, #4FC3F7, #34D399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.coffee-sub {
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 520px;
  line-height: 1.75;
}

.coffee-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 0.25rem 0;
}

.coffee-topic {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.28rem 0.7rem;
  border-radius: 99px;
  border: 1px solid;
  transition: transform 0.2s, box-shadow 0.2s;
}

.coffee-topic:hover {
  transform: translateY(-2px);
}

.coffee-topic.t1 {
  color: #4FC3F7;
  border-color: rgba(79, 195, 247, 0.35);
  background: rgba(79, 195, 247, 0.07);
}

.coffee-topic.t1:hover {
  box-shadow: 0 0 10px rgba(79, 195, 247, 0.25);
}

.coffee-topic.t2 {
  color: #A78BFA;
  border-color: rgba(167, 139, 250, 0.35);
  background: rgba(167, 139, 250, 0.07);
}

.coffee-topic.t2:hover {
  box-shadow: 0 0 10px rgba(167, 139, 250, 0.25);
}

.coffee-topic.t3 {
  color: #34D399;
  border-color: rgba(52, 211, 153, 0.35);
  background: rgba(52, 211, 153, 0.07);
}

.coffee-topic.t3:hover {
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.25);
}

.coffee-topic.t4 {
  color: #FCD34D;
  border-color: rgba(252, 211, 77, 0.35);
  background: rgba(252, 211, 77, 0.07);
}

.coffee-topic.t4:hover {
  box-shadow: 0 0 10px rgba(252, 211, 77, 0.25);
}

.coffee-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  background: linear-gradient(90deg, rgba(79, 195, 247, 0.15), rgba(52, 211, 153, 0.12));
  border: 1px solid rgba(79, 195, 247, 0.4);
  color: var(--text);
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.25s, box-shadow 0.25s, transform 0.2s, border-color 0.25s;
  margin-top: 0.25rem;
}

.coffee-cta:hover {
  background: linear-gradient(90deg, rgba(79, 195, 247, 0.25), rgba(52, 211, 153, 0.2));
  border-color: rgba(79, 195, 247, 0.7);
  box-shadow: 0 0 24px rgba(79, 195, 247, 0.2), 0 0 12px rgba(52, 211, 153, 0.15);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--text);
}

.coffee-cta svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.coffee-note {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--subtle);
  letter-spacing: 0.04em;
}

/* ── FOOTER ───────────────────────────────────────── */
footer {
  text-align: center;
  padding: 2rem 2.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--subtle);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-counter img {
  height: 20px;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.footer-counter img:hover {
  opacity: 1;
}

/* ── DIVIDERS ─────────────────────────────────────── */
.section-sep {
  border: none;
  border-top: 1px solid var(--border);
}

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 768px) {
  body:has(.nav-toggle:checked) {
    overflow: hidden;
  }

  nav {
    padding: 0 1.25rem;
  }

  .nav-toggle-label {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(7, 7, 14, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 2.25rem;
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease;
    z-index: 99;
    pointer-events: none;
    height: calc(100vh - 60px);
    overflow-y: auto;
    border-bottom: 1px solid var(--border);
    padding: 4rem 2rem;
  }

  .nav-links a {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  /* When checked: show menu */
  .nav-toggle:checked~.nav-links {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  /* Hamburger animation when checked */
  .nav-toggle:checked~.nav-toggle-label span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle:checked~.nav-toggle-label span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked~.nav-toggle-label span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .nav-social {
    display: none;
    /* Hide social icons inside mobile nav header */
  }

  .mobile-socials {
    display: block;
    margin-top: 0.5rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    width: 100%;
    text-align: center;
  }

  .mobile-socials a {
    color: var(--accent) !important;
  }

  #hero {
    padding: 5rem 1.25rem 3rem;
  }

  #impact {
    padding: 2.5rem 1.25rem;
  }

  .impact-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1rem;
  }

  .impact-item:last-child {
    border-bottom: none;
  }

  #about {
    grid-template-columns: 1fr;
    padding: 4rem 1.25rem;
    gap: 2.5rem;
  }

  .section-wrap {
    padding: 4rem 1.25rem;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .contact-links {
    align-items: flex-start;
  }

  .impact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  #intro-overlay .intro-name {
    font-size: clamp(2.5rem, 12vw, 5rem);
  }
}

@media (prefers-reduced-motion: reduce) {

  #intro-overlay,
  #intro-overlay * {
    animation: none !important;
    transition: none !important;
  }
}

/* ── CERTIFICATIONS (LinkedIn Style) ───────────────── */
.cert-carousel {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.cert-track-container {
  overflow: hidden;
  flex-grow: 1;
}

.cert-track {
  display: flex;
  gap: 1.5rem;
  transition: transform 0.4s ease-in-out;
}

.cert-card {
  flex: 0 0 calc(33.333% - 1rem);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.75rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: border-color 0.2s;
}

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

.cert-logo {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: #fff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cert-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cert-logo-fallback {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 700;
  color: #333;
  display: none;
}

.cert-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.cert-title {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.cert-company {
  font-size: 0.95rem;
  color: var(--text);
}

.cert-nav {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s;
}

.cert-nav:hover:not(:disabled) {
  background: var(--bg-lift);
  border-color: var(--border-hi);
}

.cert-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.cert-nav svg {
  width: 20px;
  height: 20px;
}

.cert-pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.cert-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-hi);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  border: none;
  padding: 0;
}

.cert-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

.cert-count-info {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding-bottom: 0.5rem;
}

.cert-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.cert-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  border: 1px solid var(--border-hi);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  width: fit-content;
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
  transition: background 0.2s, border-color 0.2s;
}

.cert-btn:hover {
  background: var(--bg-lift);
  border-color: var(--text);
  text-decoration: none;
}

.cert-btn svg {
  width: 14px;
  height: 14px;
}

.cert-skills {
  font-size: 0.9rem;
  color: var(--text);
}

.cert-skills strong {
  font-weight: 600;
}

@media (max-width: 1024px) {
  .cert-card {
    flex: 0 0 calc(50% - 0.75rem);
  }
}

@media (max-width: 768px) {
  .cert-card {
    flex: 0 0 100%;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .cert-count-info {
    padding-top: 0.5rem;
  }

  .cert-carousel {
    gap: 0.5rem;
  }

  .cert-nav {
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 600px) {
  .cert-card {
    padding: 1.25rem;
    gap: 1rem;
  }

  .cert-logo {
    width: 48px;
    height: 48px;
  }
}