/* =============================================================
   AKSHAY M. PAYYANADAN — PORTFOLIO
   styles.css
============================================================= */

/* ----------------------------------------------------------
   1. DESIGN TOKENS
---------------------------------------------------------- */
:root {
  --ff-display : 'Plus Jakarta Sans', sans-serif;
  --ff-body    : 'Inter', sans-serif;
  --ff-mono    : 'JetBrains Mono', monospace;

  --ease       : 0.18s ease;
  --ease-slow  : 0.4s ease;

  --r-sm  : 6px;
  --r     : 10px;
  --r-lg  : 16px;
  --r-xl  : 22px;

  --max-w : 1160px;
  --pad-x : 28px;
  --sec   : 96px;
}

/* Dark mode — default ---------------------------------------- */
[data-theme="dark"] {
  --bg        : #080c18;
  --bg-2      : #0c1122;
  --bg-card   : #101626;
  --bg-card-2 : #141c2e;
  --bg-up     : #192038;

  --border    : rgba(255,255,255,0.055);
  --border-hi : rgba(255,255,255,0.11);

  --accent    : #0dd8c0;
  --accent-2  : #06c4ae;
  --accent-bg : rgba(13,216,192,0.09);
  --accent-gl : rgba(13,216,192,0.14);

  --t1        : #eef2ff;
  --t2        : #7d8fab;
  --t3        : #3e4f6b;

  --nav-bg    : rgba(8,12,24,0.82);
  --sh-card   : 0 1px 2px rgba(0,0,0,.5), 0 8px 28px rgba(0,0,0,.3);
  --sh-up     : 0 4px 32px rgba(0,0,0,.55), 0 1px 4px rgba(0,0,0,.4);
}

/* Light mode ------------------------------------------------- */
[data-theme="light"] {
  --bg        : #f6f9fc;
  --bg-2      : #eef2f8;
  --bg-card   : #ffffff;
  --bg-card-2 : #f3f7fc;
  --bg-up     : #ffffff;

  --border    : rgba(0,0,0,0.07);
  --border-hi : rgba(0,0,0,0.13);

  --accent    : #0891b2;
  --accent-2  : #0e7490;
  --accent-bg : rgba(8,145,178,0.07);
  --accent-gl : rgba(8,145,178,0.13);

  --t1        : #0f172a;
  --t2        : #475569;
  --t3        : #94a3b8;

  --nav-bg    : rgba(246,249,252,0.84);
  --sh-card   : 0 1px 2px rgba(0,0,0,.05), 0 8px 28px rgba(0,0,0,.07);
  --sh-up     : 0 4px 32px rgba(0,0,0,.1),  0 1px 4px rgba(0,0,0,.06);
}

/* ----------------------------------------------------------
   2. RESET
---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--ff-body);
  background: var(--bg);
  color: var(--t1);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background var(--ease-slow), color var(--ease-slow);
}

a          { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
ul, ol     { list-style: none; }
button     { cursor: pointer; border: none; background: none; font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ----------------------------------------------------------
   3. LAYOUT UTILITIES
---------------------------------------------------------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.section { padding: var(--sec) 0; }
.section-alt { background: var(--bg-2); }

/* ----------------------------------------------------------
   4. TYPOGRAPHY PRIMITIVES
---------------------------------------------------------- */
.eyebrow {
  font-family: var(--ff-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.03em;
  color: var(--t1);
  margin-bottom: 52px;
}

.section-title-sm {
  font-family: var(--ff-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -.025em;
  color: var(--t1);
  margin-bottom: 40px;
}

.section-head { margin-bottom: 4px; }

.body-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--t2);
  margin-bottom: 22px;
}

.teal  { color: var(--accent); }

/* ----------------------------------------------------------
   5. BUTTONS
---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 22px;
  border-radius: var(--r);
  font-family: var(--ff-display);
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: -.01em;
  transition: transform var(--ease), box-shadow var(--ease), background var(--ease),
              border-color var(--ease), color var(--ease);
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #031510;
}
.btn-primary:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 6px 22px var(--accent-gl);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--t1);
  border: 1px solid var(--border-hi);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--t2);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--t1);
  border-color: var(--border-hi);
  transform: translateY(-1px);
}

.btn-full { width: 100%; justify-content: center; }

/* ----------------------------------------------------------
   6. TAGS / CHIPS
---------------------------------------------------------- */
.tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 100px;
  font-size: .74rem;
  font-weight: 500;
  font-family: var(--ff-mono);
  border: 1px solid rgba(13,216,192,.13);
  letter-spacing: .01em;
}
[data-theme="light"] .tag {
  border-color: rgba(8,145,178,.15);
}

/* ----------------------------------------------------------
   7. NAVIGATION
---------------------------------------------------------- */
.nav-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--ease), background var(--ease-slow);
}
.nav-header.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,.18); }

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}

/* Logo */
.nav-logo { display: flex; align-items: center; }
.logo-mark {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .08em;
  color: var(--accent);
  padding: 5px 11px;
  border: 1.5px solid var(--accent);
  border-radius: var(--r-sm);
  transition: background var(--ease);
}
.logo-mark:hover { background: var(--accent-bg); }

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  font-size: .845rem;
  font-weight: 500;
  color: var(--t2);
  padding: 6px 13px;
  border-radius: var(--r-sm);
  transition: color var(--ease), background var(--ease);
  position: relative;
}
.nav-link:hover  { color: var(--t1); background: var(--bg-card); }
.nav-link.active { color: var(--t1); background: var(--bg-card); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* Controls */
.nav-controls { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-sm);
  color: var(--t2);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.theme-toggle:hover { color: var(--t1); border-color: var(--accent); }

.theme-icon { display: flex; align-items: center; justify-content: center; }
[data-theme="dark"]  .theme-icon-light { display: none; }
[data-theme="dark"]  .theme-icon-dark  { display: flex; }
[data-theme="light"] .theme-icon-dark  { display: none; }
[data-theme="light"] .theme-icon-light { display: flex; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: var(--r-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color var(--ease);
}
.nav-toggle span {
  display: block;
  width: 17px; height: 1.5px;
  background: var(--t2);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease), background var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ----------------------------------------------------------
   8. HERO
---------------------------------------------------------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 104px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }

.hero-glow {
  position: absolute;
  right: -10%;
  top: -20%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at 70% 30%, var(--accent-bg) 0%, transparent 65%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
}

.hero-container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 72px;
  align-items: center;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 15px;
  background: var(--bg-card);
  border: 1px solid var(--border-hi);
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 500;
  color: var(--t2);
  margin-bottom: 26px;
  width: fit-content;
}
.badge-pulse {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.badge-pulse::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .3;
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: .3; }
  50%       { transform: scale(1.7); opacity: 0; }
}

/* Name */
.hero-name {
  font-family: var(--ff-display);
  font-size: clamp(3.2rem, 6.5vw, 5.4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.04em;
  color: var(--t1);
  margin-bottom: 18px;
}
.name-teal { color: var(--accent); }

.hero-sub {
  font-size: clamp(.9rem, 1.5vw, 1.08rem);
  color: var(--t2);
  letter-spacing: .005em;
  margin-bottom: 22px;
}

.hero-bio {
  font-size: 1.05rem;
  line-height: 1.76;
  color: var(--t2);
  max-width: 510px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 44px;
}

/* Stats strip */
.hero-stats {
  display: flex;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 0 26px;
}
.hero-stat:first-child { padding-left: 0; }

.stat-val {
  font-family: var(--ff-display);
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--t1);
  line-height: 1;
}
.stat-plus { color: var(--accent); font-size: 1.3rem; }
.stat-lbl {
  font-size: .72rem;
  color: var(--t3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .07em;
}
.stat-divider {
  width: 1px; height: 42px;
  background: var(--border-hi);
  flex-shrink: 0;
}

/* Profile visual */
.hero-visual { position: relative; }

.profile-frame { position: relative; }

.profile-inner {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--border-hi);
  background: var(--bg-card);
  position: relative;
}
/* Accent left-edge line on profile */
.profile-inner::before {
  content: '';
  position: absolute;
  left: 0; top: 15%; bottom: 15%;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  border-radius: 2px;
  z-index: 2;
}

.profile-placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(145deg, var(--bg-card) 0%, var(--bg-card-2) 100%);
}
.placeholder-bg {
  position: absolute;
  inset: 0; width: 100%; height: 100%;
  opacity: .9;
}
.profile-monogram {
  font-family: var(--ff-display);
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: .12em;
  opacity: .7;
  position: relative;
  z-index: 1;
}

/* Floating chips */
.float-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  background: var(--bg-card);
  border: 1px solid var(--border-hi);
  border-radius: var(--r);
  font-size: .78rem;
  font-weight: 500;
  color: var(--t1);
  box-shadow: var(--sh-card);
  white-space: nowrap;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.fc-dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.fc-1 { top: 8%;   left: -22%;  animation: flt1 4s   ease-in-out infinite; }
.fc-2 { bottom: 26%; right: -18%; animation: flt2 4.8s ease-in-out infinite; }
.fc-3 { bottom: 7%;  left: -18%; animation: flt1 5.2s ease-in-out infinite 1.1s; }

@keyframes flt1 { 0%,100%{transform:translateY(0)}   50%{transform:translateY(-7px)} }
@keyframes flt2 { 0%,100%{transform:translateY(0)}   50%{transform:translateY( 7px)} }

/* Scroll cue */
.scroll-cue {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 7px;
  color: var(--t3);
  font-size: .65rem;
  font-family: var(--ff-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  pointer-events: none;
}
.scroll-line {
  width: 1px; height: 38px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollfade 2s ease-in-out infinite;
}
@keyframes scrollfade {
  0%   { opacity: 1; transform: scaleY(1)   translateY(0);   }
  100% { opacity: 0; transform: scaleY(.5)  translateY(18px); }
}

/* ----------------------------------------------------------
   9. ABOUT
---------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 80px;
  align-items: start;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent);
  font-weight: 600;
  font-size: .9rem;
  margin-top: 6px;
  transition: gap var(--ease);
}
.text-link:hover { gap: 11px; }
.text-link svg { flex-shrink: 0; }

/* Quick facts */
.quick-facts {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.qf-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  transition: background var(--ease);
}
.qf-row:last-child { border-bottom: none; }
.qf-row:hover { background: var(--bg-card-2); }

.qf-label {
  font-size: .68rem;
  font-family: var(--ff-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--t3);
}
.qf-value {
  font-size: .875rem;
  font-weight: 500;
  color: var(--t1);
  line-height: 1.45;
}
.qf-accent {
  color: var(--accent);
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 1.15rem;
}

/* ----------------------------------------------------------
   10. CURRENTLY BUILDING
---------------------------------------------------------- */
.building-header { margin-bottom: 36px; }

.building-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1fr;
  gap: 18px;
}

.build-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 26px;
  position: relative;
  overflow: hidden;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.build-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--ease);
}
.build-card:hover { transform: translateY(-3px); border-color: var(--border-hi); box-shadow: var(--sh-up); }
.build-card:hover::before { opacity: 1; }

.build-card-feature { background: var(--bg-card-2); border-color: var(--border-hi); }

.build-icon {
  width: 38px; height: 38px;
  color: var(--accent);
  margin-bottom: 14px;
  opacity: .8;
}

.build-pill {
  display: inline-block;
  padding: 3px 9px;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 100px;
  font-size: .68rem;
  font-family: var(--ff-mono);
  font-weight: 500;
  margin-bottom: 10px;
  letter-spacing: .05em;
}

.build-title {
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--t1);
  letter-spacing: -.01em;
  margin-bottom: 9px;
}

.build-desc {
  font-size: .855rem;
  line-height: 1.65;
  color: var(--t2);
  margin-bottom: 16px;
}

.build-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.build-stack span {
  font-family: var(--ff-mono);
  font-size: .68rem;
  padding: 2px 8px;
  background: var(--bg-up);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--t3);
}

/* ----------------------------------------------------------
   11. PROJECTS
---------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.proj-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  position: relative;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.proj-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  border: 1px solid var(--accent);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ease);
}
.proj-card:hover { transform: translateY(-4px); box-shadow: var(--sh-up); }
.proj-card:hover::after { opacity: .28; }

.proj-card-feature {
  grid-column: span 2;
  background: var(--bg-card-2);
}
.proj-card-inner { padding: 30px; }

.proj-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.proj-num {
  font-family: var(--ff-mono);
  font-size: .7rem;
  color: var(--accent);
  opacity: .65;
}
.proj-tag-status {
  font-family: var(--ff-mono);
  font-size: .68rem;
  color: var(--t3);
  letter-spacing: .04em;
}

.proj-title {
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--t1);
  letter-spacing: -.02em;
  margin-bottom: 12px;
}
.proj-card-feature .proj-title { font-size: 1.55rem; }

.proj-desc {
  font-size: .875rem;
  line-height: 1.72;
  color: var(--t2);
  margin-bottom: 20px;
}

.proj-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }

.proj-links { display: flex; align-items: center; gap: 12px; }

.proj-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .8rem; font-weight: 500; color: var(--t2);
  transition: color var(--ease);
}
.proj-link:hover { color: var(--accent); }
.proj-link-muted { opacity: .45; pointer-events: none; }

.proj-badge-private {
  font-family: var(--ff-mono);
  font-size: .7rem;
  color: var(--t3);
  padding: 3px 9px;
  background: var(--bg-up);
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ----------------------------------------------------------
   12. EXPERIENCE / TIMELINE
---------------------------------------------------------- */
.timeline {
  position: relative;
  padding-left: 30px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 6px; top: 20px; bottom: 20px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent) 0%, var(--border) 60%, transparent 100%);
}

.tl-item {
  position: relative;
  margin-bottom: 24px;
}
.tl-item:last-child { margin-bottom: 0; }

.tl-marker {
  position: absolute;
  left: -26px; top: 20px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: background var(--ease), box-shadow var(--ease);
}
.tl-item:hover .tl-marker {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-gl);
}

.tl-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 22px 26px;
  transition: border-color var(--ease), box-shadow var(--ease);
}
.tl-item:hover .tl-card { border-color: var(--border-hi); box-shadow: var(--sh-card); }

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

.tl-role {
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--t1);
  letter-spacing: -.01em;
  margin-bottom: 3px;
}
.tl-company { font-size: .855rem; color: var(--accent); font-weight: 500; }

.tl-period {
  font-family: var(--ff-mono);
  font-size: .74rem;
  color: var(--t3);
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 3px;
}
.period-now {
  background: var(--accent-bg);
  color: var(--accent);
  padding: 2px 9px;
  border-radius: 100px;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .06em;
}

.tl-points { display: flex; flex-direction: column; gap: 7px; }
.tl-points li {
  font-size: .86rem;
  color: var(--t2);
  line-height: 1.6;
  padding-left: 14px;
  position: relative;
}
.tl-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  opacity: .45;
  font-size: .7rem;
  top: 1px;
}

/* ----------------------------------------------------------
   13. SKILLS
---------------------------------------------------------- */
.skills-layout { display: flex; flex-direction: column; }

.skill-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  align-items: start;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.skill-row:first-child { padding-top: 0; }
.skill-row:last-child  { border-bottom: none; padding-bottom: 0; }

.skill-cat {
  font-family: var(--ff-display);
  font-size: .875rem;
  font-weight: 600;
  color: var(--t2);
  padding-top: 4px;
}

.skill-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: .845rem;
  font-weight: 500;
  color: var(--t2);
  transition: border-color var(--ease), color var(--ease);
  cursor: default;
}
.chip:hover { border-color: var(--border-hi); color: var(--t1); }

.chip-hi {
  background: var(--accent-bg);
  border-color: rgba(13,216,192,.16);
  color: var(--accent);
}
.chip-hi:hover { color: var(--accent); border-color: rgba(13,216,192,.3); }
[data-theme="light"] .chip-hi { border-color: rgba(8,145,178,.18); }

/* ----------------------------------------------------------
   14. EDUCATION
---------------------------------------------------------- */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 26px;
  position: relative;
  overflow: hidden;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.edu-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--ease);
}
.edu-card:hover { transform: translateY(-2px); border-color: var(--border-hi); box-shadow: var(--sh-card); }
.edu-card:hover::after { opacity: .5; }

.edu-card-active {
  border-color: rgba(13,216,192,.18);
  background: var(--bg-card-2);
}
[data-theme="light"] .edu-card-active { border-color: rgba(8,145,178,.2); }

.edu-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-mono);
  font-size: .66rem;
  color: var(--accent);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.edu-status-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.edu-degree {
  font-family: var(--ff-display);
  font-size: .975rem;
  font-weight: 700;
  color: var(--t1);
  letter-spacing: -.01em;
  margin-bottom: 7px;
  line-height: 1.38;
}
.edu-inst { font-size: .855rem; color: var(--accent); font-weight: 500; margin-bottom: 3px; }
.edu-loc {
  font-size: .76rem;
  color: var(--t3);
  font-family: var(--ff-mono);
  margin-bottom: 12px;
}
.edu-note {
  font-size: .78rem;
  color: var(--t2);
  font-style: italic;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  line-height: 1.5;
}

/* ----------------------------------------------------------
   15. CERTIFICATIONS
---------------------------------------------------------- */
.cert-list { display: flex; flex-direction: column; gap: 14px; }

.cert-item {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 18px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: border-color var(--ease), box-shadow var(--ease);
}
.cert-item:hover { border-color: var(--border-hi); box-shadow: var(--sh-card); }

.cert-logo {
  width: 68px; flex-shrink: 0;
  height: 38px;
  display: flex; align-items: center;
}
.cert-aws { color: #e8860a; }
[data-theme="light"] .cert-aws { color: #c4700a; }

.cert-info { flex: 1; }
.cert-name { font-family: var(--ff-display); font-size: .975rem; font-weight: 600; color: var(--t1); margin-bottom: 3px; }
.cert-body { font-size: .84rem; color: var(--t2); }

.cert-badge {
  padding: 4px 12px;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 600;
  font-family: var(--ff-mono);
  letter-spacing: .07em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* ----------------------------------------------------------
   16. CONTACT
---------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 80px;
  align-items: start;
}

.contact-intro {
  font-size: 1.03rem;
  line-height: 1.75;
  color: var(--t2);
  margin-bottom: 32px;
}

.contact-methods { display: flex; flex-direction: column; gap: 12px; }

.contact-method {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}
.contact-method:hover { border-color: var(--accent); transform: translateX(4px); box-shadow: var(--sh-card); }

.cm-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-bg);
  border-radius: var(--r-sm);
  color: var(--accent);
  flex-shrink: 0;
}
.cm-icon svg { width: 18px; height: 18px; }

.cm-label {
  font-size: .68rem;
  font-family: var(--ff-mono);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--t3);
  margin-bottom: 2px;
}
.cm-value { font-size: .88rem; font-weight: 500; color: var(--t1); }

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 30px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: .72rem;
  font-weight: 600;
  color: var(--t2);
  margin-bottom: 7px;
  font-family: var(--ff-mono);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.form-input {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg);
  border: 1px solid var(--border-hi);
  border-radius: var(--r);
  color: var(--t1);
  font-family: var(--ff-body);
  font-size: .9rem;
  transition: border-color var(--ease), box-shadow var(--ease);
  outline: none;
  -webkit-appearance: none;
}
.form-input::placeholder { color: var(--t3); }
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}
.form-textarea { resize: vertical; min-height: 116px; line-height: 1.6; }

.form-note {
  margin-top: 12px;
  font-size: .76rem;
  color: var(--t3);
  text-align: center;
  min-height: 1.2em;
}
.form-note a { color: var(--accent); }
.form-note.success { color: var(--accent); }
.form-note.error   { color: #f87171; }

/* ----------------------------------------------------------
   17. FOOTER
---------------------------------------------------------- */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 26px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-logo {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: .875rem;
  letter-spacing: .1em;
  color: var(--accent);
  border: 1.5px solid var(--accent);
  padding: 3px 9px;
  border-radius: var(--r-sm);
}
.footer-sub { font-size: .78rem; color: var(--t3); }

.footer-nav { display: flex; gap: 18px; }
.footer-nav a {
  font-size: .78rem;
  color: var(--t3);
  transition: color var(--ease);
}
.footer-nav a:hover { color: var(--t1); }

.footer-copy { font-size: .74rem; color: var(--t3); }

/* ----------------------------------------------------------
   18. SCROLL ANIMATIONS
---------------------------------------------------------- */
[data-animate] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .5s ease, transform .5s ease;
}
[data-animate].visible { opacity: 1; transform: translateY(0); }

/* Delay helpers */
[data-delay="50"]  { transition-delay: .05s; }
[data-delay="100"] { transition-delay: .10s; }
[data-delay="150"] { transition-delay: .15s; }
[data-delay="200"] { transition-delay: .20s; }
[data-delay="300"] { transition-delay: .30s; }
[data-delay="400"] { transition-delay: .40s; }
[data-delay="500"] { transition-delay: .50s; }

/* Card stagger (applied via JS) */
.proj-card, .edu-card, .cert-item, .tl-item, .build-card, .skill-row {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .42s ease, transform .42s ease;
}
.is-visible { opacity: 1 !important; transform: translateY(0) !important; }

/* ----------------------------------------------------------
   19. RESPONSIVE — tablet
---------------------------------------------------------- */
@media (max-width: 1024px) {
  :root { --sec: 76px; }

  .hero-container { grid-template-columns: 1fr 340px; gap: 52px; }
  .about-grid     { grid-template-columns: 1fr 280px; gap: 48px; }
  .contact-grid   { grid-template-columns: 1fr; gap: 44px; }
  .proj-card-feature { grid-column: span 2; }
  .edu-grid { grid-template-columns: 1fr 1fr; }
  .building-grid { grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
}

@media (max-width: 860px) {
  .building-grid { grid-template-columns: 1fr; }
  .build-card-feature { order: -1; }
  .projects-grid { grid-template-columns: 1fr; }
  .proj-card-feature { grid-column: span 1; }
  .edu-grid { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------
   20. RESPONSIVE — mobile
---------------------------------------------------------- */
@media (max-width: 768px) {
  :root { --sec: 60px; --pad-x: 20px; }

  /* Nav: collapse to hamburger */
  .nav-links {
    display: none;
    position: absolute;
    top: 62px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .nav-link { padding: 10px 14px; border-radius: var(--r-sm); }
  .nav-toggle { display: flex; }

  /* Hero */
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    order: -1;
    max-width: 280px;
    margin: 0 auto;
  }
  .hero-name { font-size: clamp(2.8rem, 11vw, 4.2rem); }
  .fc-1, .fc-2, .fc-3 { display: none; }

  .hero-stats { flex-wrap: wrap; row-gap: 16px; }
  .stat-divider { display: none; }
  .hero-stat { padding: 0 18px 0 0; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 36px; }

  /* Skills */
  .skill-row { grid-template-columns: 1fr; gap: 10px; }
  .skill-row:first-child { padding-top: 24px; }

  /* Timeline */
  .tl-head { flex-direction: column; gap: 6px; }
  .tl-period { padding-top: 0; }

  /* Contact */
  .contact-grid { gap: 36px; }

  /* Footer */
  .footer-inner { flex-direction: column; text-align: center; gap: 14px; }
  .footer-brand { flex-direction: column; gap: 6px; }
  .footer-center { order: -1; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; justify-content: center; }
  .proj-card-inner { padding: 22px; }
  .contact-form { padding: 20px; }
  .form-row { grid-template-columns: 1fr; }
  .tl-card { padding: 18px 20px; }
  .cert-item { gap: 14px; }
}