/* =================================================================
   Afrin Ameer Khan — QA Portfolio
   Aesthetic: Editorial corporate. Deep midnight navy + warm copper +
   muted ivory. Fraunces serif display + Inter body + JetBrains Mono.
   Layered depth, generous space, refined motion.
   ================================================================= */

:root {
  /* Color system */
  --ink:        #0a1628;
  --ink-deep:   #050d1a;
  --ink-soft:   #1f2d44;
  --ink-mute:   #4a5970;
  --ink-faint:  #7a8699;

  --paper:      #faf8f3;
  --paper-warm: #f3eee2;
  --paper-deep: #ebe3d2;

  --line:       #e0d8c4;
  --line-soft:  #ede6d4;

  --accent:     #c2693a;
  --accent-deep:#9a4f24;
  --accent-soft:#f7e7d4;
  --accent-glow: rgba(194, 105, 58, 0.15);

  --gold:       #d4b069;
  --gold-soft:  #ecd9a3;

  --green:      #3b8866;

  /* Type */
  --serif: 'Fraunces', Georgia, serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:  'JetBrains Mono', 'Courier New', monospace;

  /* Layout */
  --container: 1240px;
  --radius:    6px;
  --radius-lg: 14px;
  --radius-xl: 22px;

  /* Motion */
  --t-fast: 200ms cubic-bezier(.4,0,.2,1);
  --t-med:  450ms cubic-bezier(.4,0,.2,1);
  --t-slow: 800ms cubic-bezier(.16,1,.3,1);

  /* Shadows */
  --shadow-sm: 0 2px 8px -2px rgba(10, 22, 40, 0.08);
  --shadow-md: 0 12px 32px -12px rgba(10, 22, 40, 0.16);
  --shadow-lg: 0 24px 60px -20px rgba(10, 22, 40, 0.22);
  --shadow-xl: 0 40px 100px -30px rgba(10, 22, 40, 0.32);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }

::selection { background: var(--ink); color: var(--paper); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== Subtle grain overlay ===== */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.04 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ============ NAVIGATION ============ */
.nav {
  position: fixed;
  top: 16px; left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: calc(100% - 32px);
  max-width: 1280px;
  background: rgba(250, 248, 243, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid rgba(224, 216, 196, 0.6);
  border-radius: 100px;
  transition: all var(--t-med);
  box-shadow: var(--shadow-sm);
}
.nav.scrolled {
  background: rgba(250, 248, 243, 0.95);
  box-shadow: var(--shadow-md);
}
.nav-inner {
  padding: 12px 16px 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-mark {
  position: relative;
  width: 38px; height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  border-radius: 50%;
  overflow: hidden;
}
.logo-mark::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, var(--accent) 0%, transparent 60%);
  opacity: 0.5;
}
.logo-mark-inner {
  position: relative;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 13px;
  color: var(--paper);
  letter-spacing: 0.02em;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.logo-role {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: 100px;
  transition: all var(--t-fast);
}
.nav-links li a:hover {
  background: var(--paper-warm);
  color: var(--ink);
}
.nav-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  font-weight: 600;
}
.nav-cta {
  background: var(--ink) !important;
  color: var(--paper) !important;
  padding: 10px 18px !important;
  margin-left: 8px;
  font-weight: 600 !important;
  transition: all var(--t-fast);
}
.nav-cta:hover {
  background: var(--accent-deep) !important;
  color: var(--paper) !important;
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  transition: transform var(--t-fast), opacity var(--t-fast);
  border-radius: 2px;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 180px 40px 120px;
  overflow: hidden;
  background: var(--paper);
}
.hero-bg {
  position: absolute; inset: 0;
  pointer-events: none;
  color: var(--ink);
}
.hero-pattern {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  opacity: 0.4;
  color: var(--ink-faint);
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}
.hero-orb-1 {
  width: 500px; height: 500px;
  top: -150px; right: -100px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  animation: float1 14s ease-in-out infinite;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  bottom: -100px; left: -100px;
  background: radial-gradient(circle, var(--gold) 0%, transparent 70%);
  opacity: 0.3;
  animation: float2 18s ease-in-out infinite;
}
@keyframes float1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, 40px) scale(1.08); }
}
@keyframes float2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, -30px) scale(0.95); }
}

.hero-grid {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 80px;
  align-items: center;
  z-index: 2;
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  background: rgba(250, 248, 243, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
  margin-bottom: 32px;
  animation: fadeUp 700ms var(--t-slow) both;
}
.tag-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(59, 136, 102, 0.4);
  animation: pulse 2.4s infinite;
}
.tag-divider { color: var(--ink-faint); }
.tag-quiet { color: var(--ink-mute); }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 136, 102, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(59, 136, 102, 0); }
}

.hero-title {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin-bottom: 36px;
  font-size: clamp(2.75rem, 6vw, 5.5rem);
}
.hero-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 900ms cubic-bezier(.16,1,.3,1) both;
}
.hero-line-1 { animation-delay: 100ms; }
.hero-line-2 { animation-delay: 250ms; padding-left: 0.5em; }
.hero-line-3 { animation-delay: 400ms; padding-left: 1em; }
.hero-title em {
  font-style: italic;
  font-weight: 500;
  color: var(--accent);
  position: relative;
}
.hero-title em::after {
  content: '';
  position: absolute;
  bottom: 0.08em; left: 0;
  width: 100%; height: 0.06em;
  background: var(--accent);
  opacity: 0.3;
  border-radius: 2px;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 44px;
  animation: fadeUp 800ms 550ms both;
}
.hero-subtitle strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 64px;
  animation: fadeUp 800ms 650ms both;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.005em;
  transition: all var(--t-fast);
  border: 1.5px solid transparent;
  position: relative;
  overflow: hidden;
}
.btn svg { width: 16px; height: 16px; transition: transform var(--t-fast); }
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  opacity: 0;
  transition: opacity var(--t-fast);
}
.btn-primary span, .btn-primary svg { position: relative; z-index: 1; }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -12px rgba(194, 105, 58, 0.4);
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-ghost {
  border-color: var(--ink);
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.hero-meta {
  display: flex;
  gap: 48px;
  animation: fadeUp 800ms 750ms both;
}
.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.meta-num {
  font-family: var(--serif);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
}
.meta-num span {
  font-size: 1.4rem;
  color: var(--accent);
  font-weight: 400;
  margin-left: 2px;
}
.meta-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

/* Hero card (yaml summary) */
.hero-card-wrap {
  position: relative;
  animation: fadeUp 1000ms 600ms both;
}
.hero-card {
  position: relative;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow:
    0 30px 80px -30px rgba(10, 22, 40, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transform: rotate(0.8deg);
  transition: transform var(--t-med);
  z-index: 2;
}
.hero-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, var(--accent-glow) 0%, transparent 50%);
  pointer-events: none;
}
.hero-card-shadow {
  position: absolute;
  top: 16px; left: 16px;
  right: -16px; bottom: -16px;
  background: var(--accent-soft);
  border-radius: var(--radius-lg);
  z-index: 1;
  transform: rotate(-1.5deg);
  opacity: 0.6;
}
.hero-card:hover { transform: rotate(0deg) translateY(-4px); }

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.02);
}
.card-dots { display: flex; gap: 6px; }
.card-dots span {
  width: 11px; height: 11px;
  border-radius: 50%;
}
.card-dots span:nth-child(1) { background: #ff5f57; }
.card-dots span:nth-child(2) { background: #ffbd2e; }
.card-dots span:nth-child(3) { background: #28c940; }
.card-title {
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  margin-left: 8px;
}
.card-status {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  background: rgba(59, 136, 102, 0.12);
  border-radius: 100px;
  border: 1px solid rgba(59, 136, 102, 0.25);
}
.card-body {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.85);
  padding: 22px 24px;
  white-space: pre;
  overflow-x: auto;
}
.card-body .line-num {
  display: inline-block;
  width: 24px;
  color: rgba(255, 255, 255, 0.25);
  user-select: none;
  text-align: right;
  margin-right: 12px;
}
.card-body .k { color: var(--gold); font-weight: 500; }
.card-body .p { color: rgba(255, 255, 255, 0.4); }
.card-body .s { color: #f0e8d8; }
.card-body .d { color: rgba(255, 255, 255, 0.78); }
.card-body .hl {
  color: var(--green);
  background: rgba(59, 136, 102, 0.12);
  padding: 1px 6px;
  border-radius: 3px;
}
.card-body .cm { color: rgba(255, 255, 255, 0.35); font-style: italic; }

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
  z-index: 2;
}
.scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--ink-mute) 0%, transparent 100%);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: -16px; left: 0;
  width: 100%; height: 16px;
  background: var(--accent);
  animation: scrollDown 2s infinite;
}
@keyframes scrollDown {
  0% { transform: translateY(0); }
  100% { transform: translateY(48px); }
}

/* ============ MARQUEE ============ */
.marquee {
  background: var(--ink);
  color: var(--paper);
  padding: 22px 0;
  overflow: hidden;
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.marquee::before, .marquee::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(to right, var(--ink), transparent); }
.marquee::after  { right: 0; background: linear-gradient(to left,  var(--ink), transparent); }
.marquee-track {
  display: inline-flex;
  gap: 36px;
  white-space: nowrap;
  animation: scroll-x 40s linear infinite;
  padding-left: 36px;
}
.marquee-track span {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  font-style: italic;
  color: var(--paper);
}
.marquee-track span:nth-child(odd) { font-style: normal; font-family: var(--mono); font-size: 1rem; color: var(--gold); }
.marquee-track span:nth-child(even) { font-style: italic; }
@keyframes scroll-x {
  to { transform: translateX(-50%); }
}

/* ============ SECTIONS (shared) ============ */
.section {
  position: relative;
  padding: 140px 0;
  z-index: 2;
}
.section-header {
  margin-bottom: 80px;
  max-width: 760px;
}
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 22px;
}
.section-eyebrow .eyebrow-num {
  color: var(--accent);
  font-weight: 600;
}
.section-eyebrow .eyebrow-line {
  width: 32px; height: 1px;
  background: var(--accent);
  display: inline-block;
}
.section-eyebrow.light { color: rgba(255,255,255,0.5); }
.section-eyebrow.light .eyebrow-num { color: var(--gold); }
.section-eyebrow.light .eyebrow-line { background: var(--gold); }

.section-title {
  font-family: var(--serif);
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
}
.section-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 500;
}
.section-title.small {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}
.section-sub {
  margin-top: 20px;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 600px;
  line-height: 1.65;
}

/* ============ ABOUT ============ */
.section-about {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%);
  border-top: 1px solid var(--line);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 80px;
}
.about-text .lead {
  font-family: var(--serif);
  font-size: 1.6rem;
  line-height: 1.4;
  color: var(--ink);
  font-weight: 400;
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}
.about-text p {
  font-size: 1.0625rem;
  line-height: 1.78;
  color: var(--ink-soft);
  margin-bottom: 22px;
}
.about-text mark {
  background: linear-gradient(120deg, var(--accent-soft) 0%, var(--accent-soft) 100%);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ink);
  font-weight: 500;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.about-aside {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  background: var(--paper);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  position: sticky;
  top: 120px;
  height: fit-content;
}
.aside-block {
  padding: 24px 24px 22px;
  border-radius: var(--radius);
  transition: background var(--t-fast);
  position: relative;
}
.aside-block:not(:last-child)::after {
  content: '';
  position: absolute;
  bottom: 0; left: 24px; right: 24px;
  height: 1px;
  background: var(--line-soft);
}
.aside-block:hover { background: var(--paper-warm); }
.aside-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.aside-icon svg { width: 18px; height: 18px; }
.aside-block h4 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
  font-weight: 600;
}
.aside-block p {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  line-height: 1.45;
}
.aside-block p strong { font-weight: 600; }

/* ============ SKILLS ============ */
.section-skills { background: var(--paper); }
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.skill-card {
  position: relative;
  padding: 44px 36px;
  background: var(--paper);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background var(--t-med);
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 0;
  background: var(--paper-warm);
  transition: height var(--t-med);
  z-index: 0;
}
.skill-card > * { position: relative; z-index: 1; }
.skill-card:hover::before { height: 100%; }

.skill-num {
  position: absolute;
  top: 28px; right: 32px;
  font-family: var(--serif);
  font-size: 4rem;
  font-weight: 300;
  color: var(--paper-deep);
  line-height: 1;
  letter-spacing: -0.04em;
  transition: color var(--t-med);
  z-index: 0;
}
.skill-card:hover .skill-num { color: var(--accent-soft); }

.skill-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: all var(--t-med);
}
.skill-card:hover .skill-icon {
  background: var(--accent);
  transform: rotate(-6deg) scale(1.05);
}
.skill-icon svg { width: 22px; height: 22px; }

.skill-card h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: -0.015em;
}
.skill-card ul li {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  padding: 9px 0;
  padding-left: 20px;
  position: relative;
  border-bottom: 1px solid rgba(224, 216, 196, 0.4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.skill-card ul li:last-child { border-bottom: none; }
.skill-card ul li::before {
  content: '+';
  position: absolute;
  left: 0; top: 9px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
}
.skill-tag {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 8px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 100px;
  letter-spacing: 0.05em;
  font-weight: 500;
  text-transform: uppercase;
}

/* ============ EXPERIENCE ============ */
.section-experience {
  background: var(--paper-warm);
  border-top: 1px solid var(--line);
}
.timeline {
  max-width: 920px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 12px; bottom: 12px; left: 7px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent) 0%, var(--line) 60%, transparent 100%);
}
.timeline-item {
  position: relative;
  padding-bottom: 80px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -40px; top: 8px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--paper-warm);
  border: 2px solid var(--accent);
  z-index: 2;
}
.marker-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0.6;
  animation: markerPulse 2.4s ease-out infinite;
}
@keyframes markerPulse {
  0% { transform: scale(0.8); opacity: 0.6; }
  100% { transform: scale(2); opacity: 0; }
}

.timeline-content {
  background: var(--paper);
  padding: 36px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  transition: all var(--t-med);
}
.timeline-content:hover {
  transform: translateX(6px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.timeline-date {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
}
.timeline-domain {
  font-size: 12px;
  padding: 4px 12px;
  background: var(--paper-warm);
  border-radius: 100px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  font-weight: 500;
}
.timeline-current {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  background: rgba(59, 136, 102, 0.1);
  border: 1px solid rgba(59, 136, 102, 0.25);
  border-radius: 100px;
}
.timeline-role {
  font-family: var(--serif);
  font-size: 1.85rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1.15;
}
.timeline-company {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  color: var(--ink-soft);
  font-weight: 500;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-soft);
}
.company-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.timeline-bullets li {
  font-size: 0.9875rem;
  line-height: 1.75;
  color: var(--ink-soft);
  padding: 11px 0 11px 26px;
  position: relative;
}
.timeline-bullets li:not(:last-child) {
  border-bottom: 1px solid rgba(224, 216, 196, 0.4);
}
.timeline-bullets li::before {
  content: '→';
  position: absolute;
  left: 0; top: 11px;
  color: var(--accent);
  font-weight: 600;
}
.timeline-bullets strong {
  color: var(--ink);
  font-weight: 600;
  background: var(--accent-soft);
  padding: 1px 5px;
  border-radius: 3px;
}

/* ============ PROJECTS ============ */
.section-projects {
  background: var(--paper);
  border-top: 1px solid var(--line);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.project-card {
  position: relative;
  padding: 36px 36px 32px;
  background: var(--paper-warm);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: all var(--t-med);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  background: var(--paper);
}

.project-feature {
  grid-column: 1 / -1;
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  padding: 0;
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
}
.project-feature:hover {
  border-color: var(--accent);
  box-shadow: 0 30px 80px -20px rgba(10, 22, 40, 0.5);
}
.feature-bg {
  position: absolute;
  inset: 0;
  color: var(--accent);
  pointer-events: none;
  mask-image: radial-gradient(ellipse at top right, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at top right, black 0%, transparent 70%);
}
.feature-bg svg { width: 100%; height: 100%; }
.feature-content {
  position: relative;
  padding: 56px 56px 48px;
}

.project-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  font-weight: 600;
  padding: 5px 12px;
  background: var(--accent-soft);
  border-radius: 100px;
  width: fit-content;
}
.project-feature .project-tag {
  background: rgba(212, 176, 105, 0.12);
  color: var(--gold);
  border: 1px solid rgba(212, 176, 105, 0.3);
}
.tag-icon { font-size: 8px; }

.project-card h3 {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 500;
  letter-spacing: -0.018em;
  margin-bottom: 14px;
  line-height: 1.2;
  color: var(--ink);
}
.project-feature h3 {
  font-size: 2.4rem;
  color: var(--paper);
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 18px;
}
.project-card > p {
  font-size: 0.975rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 24px;
  flex: 1;
}
.project-feature > .feature-content > p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.1rem;
  max-width: 720px;
  line-height: 1.7;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}
.project-stack span {
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 11px;
  background: rgba(10, 22, 40, 0.05);
  color: var(--ink-soft);
  border-radius: 100px;
  letter-spacing: 0.02em;
  font-weight: 500;
  border: 1px solid rgba(10, 22, 40, 0.04);
}
.project-feature .project-stack span {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.08);
}

.project-impact {
  display: flex;
  gap: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  margin-top: auto;
}
.project-feature .project-impact {
  border-top-color: rgba(255, 255, 255, 0.1);
  gap: 56px;
}
.impact-stat .impact-num {
  font-family: var(--serif);
  font-size: 1.85rem;
  font-weight: 500;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
}
.impact-stat .impact-num span {
  font-size: 1.2rem;
  font-weight: 400;
}
.project-feature .impact-stat .impact-num {
  color: var(--gold);
  font-size: 2.4rem;
}
.project-feature .impact-stat .impact-num span { font-size: 1.5rem; }
.impact-stat .impact-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}
.project-feature .impact-label { color: rgba(255, 255, 255, 0.55); }

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  transition: gap var(--t-fast);
}
.project-link svg { width: 13px; height: 13px; transition: transform var(--t-fast); }
.project-link:hover { gap: 14px; color: var(--accent-deep); }
.project-link:hover svg { transform: rotate(45deg); }

.projects-footnote {
  text-align: center;
  margin-top: 64px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.projects-footnote a {
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid var(--accent);
  margin-left: 4px;
  transition: color var(--t-fast);
}
.projects-footnote a:hover { color: var(--accent-deep); }

/* ============ CERTIFICATIONS & EDUCATION ============ */
.section-creds {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%);
  border-top: 1px solid var(--line);
}
.creds-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.creds-block .section-title { margin-bottom: 36px; }

.cert-list, .edu-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cert-list li, .edu-list li {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all var(--t-fast);
}
.cert-list li:hover, .edu-list li:hover {
  transform: translateX(6px);
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}
.cert-icon {
  width: 36px; height: 36px;
  flex-shrink: 0;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent-deep);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cert-icon svg { width: 18px; height: 18px; }
.cert-body { flex: 1; }
.cert-name {
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
  line-height: 1.35;
}
.cert-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
}

.edu-list li { gap: 20px; }
.edu-year {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
  flex-shrink: 0;
  font-style: italic;
}
.edu-body { flex: 1; }
.edu-degree {
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
  line-height: 1.35;
}
.edu-school {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.edu-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.edu-meta strong {
  color: var(--accent);
  font-weight: 600;
}

/* ============ CONTACT ============ */
.section-contact {
  background: var(--ink);
  color: var(--paper);
  padding: 160px 0;
  position: relative;
  overflow: hidden;
}
.contact-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.contact-orb {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(194, 105, 58, 0.12) 0%, transparent 60%);
  filter: blur(40px);
  animation: float1 16s ease-in-out infinite;
}
.contact-inner {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}
.section-contact .section-eyebrow {
  justify-content: center;
}
.contact-title {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  color: var(--paper);
  margin: 24px 0 28px;
  line-height: 1.05;
}
.contact-title em {
  font-style: italic;
  color: var(--gold);
  font-weight: 500;
}
.contact-sub {
  font-size: 1.125rem;
  color: rgba(250, 248, 243, 0.72);
  max-width: 620px;
  margin: 0 auto 64px;
  line-height: 1.65;
}
.contact-sub strong {
  color: var(--gold);
  font-weight: 600;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  text-align: left;
  transition: all var(--t-fast);
}
.contact-card:hover {
  background: rgba(194, 105, 58, 0.08);
  border-color: var(--accent);
  transform: translateY(-3px);
}
.contact-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--t-fast);
}
.contact-card:hover .contact-icon {
  background: var(--accent);
  color: var(--paper);
}
.contact-icon svg { width: 20px; height: 20px; }
.contact-meta { flex: 1; min-width: 0; }
.contact-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(250, 248, 243, 0.5);
  margin-bottom: 4px;
  font-weight: 500;
}
.contact-value {
  font-family: var(--serif);
  font-size: 1.0625rem;
  color: var(--paper);
  font-weight: 500;
  word-break: break-all;
  line-height: 1.3;
}
.contact-arrow {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: rgba(250, 248, 243, 0.3);
  transition: all var(--t-fast);
}
.contact-card:hover .contact-arrow {
  color: var(--gold);
  transform: translateX(4px);
}

/* ============ FOOTER ============ */
.footer {
  background: var(--ink-deep);
  color: rgba(250, 248, 243, 0.45);
  padding: 40px 0 32px;
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-brand {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--paper);
  margin-bottom: 4px;
}
.footer-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(250, 248, 243, 0.4);
}
.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.footer-meta { font-size: 12px; }
.footer-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  transition: color var(--t-fast);
}
.footer-top svg { width: 12px; height: 12px; }
.footer-top:hover { color: var(--accent); }

/* ============ ANIMATIONS ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.section { opacity: 0; transform: translateY(30px); transition: opacity 900ms, transform 900ms; }
.section.in-view { opacity: 1; transform: translateY(0); }

.timeline-item, .project-card, .skill-card, .cert-list li, .edu-list li {
  opacity: 0; transform: translateY(20px);
  transition: opacity 700ms, transform 700ms;
}
.in-view.timeline-item, .in-view.project-card, .in-view.skill-card,
.cert-list li.in-view, .edu-list li.in-view {
  opacity: 1; transform: translateY(0);
}

/* Stagger */
.skills-grid .skill-card:nth-child(1).in-view { transition-delay: 0ms; }
.skills-grid .skill-card:nth-child(2).in-view { transition-delay: 80ms; }
.skills-grid .skill-card:nth-child(3).in-view { transition-delay: 160ms; }
.skills-grid .skill-card:nth-child(4).in-view { transition-delay: 240ms; }
.skills-grid .skill-card:nth-child(5).in-view { transition-delay: 320ms; }
.skills-grid .skill-card:nth-child(6).in-view { transition-delay: 400ms; }

.projects-grid .project-card:nth-child(2).in-view { transition-delay: 80ms; }
.projects-grid .project-card:nth-child(3).in-view { transition-delay: 160ms; }
.projects-grid .project-card:nth-child(4).in-view { transition-delay: 240ms; }
.projects-grid .project-card:nth-child(5).in-view { transition-delay: 320ms; }
.projects-grid .project-card:nth-child(6).in-view { transition-delay: 400ms; }

.cert-list li:nth-child(2).in-view, .edu-list li:nth-child(2).in-view { transition-delay: 100ms; }
.cert-list li:nth-child(3).in-view { transition-delay: 200ms; }
.cert-list li:nth-child(4).in-view { transition-delay: 300ms; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .nav-links li a { padding: 9px 12px; font-size: 12px; }
  .nav-num { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 64px; }
  .hero-card-shadow { display: none; }
  .hero-card { transform: none; }
  .hero-meta { gap: 32px; flex-wrap: wrap; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-content { padding: 44px 36px; }
  .project-feature h3 { font-size: 2rem; }
  .creds-grid { grid-template-columns: 1fr; gap: 64px; }
}
@media (max-width: 768px) {
  .container { padding: 0 24px; }
  .hero { padding: 140px 24px 90px; }
  .section { padding: 90px 0; }
  .section-header { margin-bottom: 56px; }

  .nav { width: calc(100% - 24px); top: 12px; }
  .nav-inner { padding: 10px 12px 10px 18px; }
  .logo-text { display: none; }
  .nav-links {
    position: absolute;
    top: calc(100% + 8px);
    left: 0; right: 0;
    flex-direction: column;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 16px;
    gap: 4px;
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all var(--t-fast);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li { width: 100%; }
  .nav-links li a { width: 100%; justify-content: flex-start; padding: 12px 16px; }
  .nav-num { display: inline; }
  .nav-cta { text-align: center; justify-content: center; }
  .nav-toggle { display: flex; }

  .hero-line-2, .hero-line-3 { padding-left: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-aside { position: static; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .feature-content { padding: 36px 28px; }
  .project-feature h3 { font-size: 1.65rem; }
  .project-feature .project-impact { gap: 28px; flex-wrap: wrap; }
  .project-feature .impact-stat .impact-num { font-size: 1.85rem; }

  .timeline { padding-left: 28px; }
  .timeline-marker { left: -28px; }
  .timeline-content { padding: 28px 24px; }
  .timeline-role { font-size: 1.4rem; }

  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-right { align-items: flex-start; }
}
@media (max-width: 500px) {
  .hero-meta { gap: 24px; }
  .meta-num { font-size: 1.85rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .timeline-meta { gap: 8px; }
  .marquee-track span { font-size: 1.2rem; }
  .marquee-track span:nth-child(odd) { font-size: 0.85rem; }
}