/* ===========================
   DESIGN TOKENS
   =========================== */
:root {
  --text-xs:   clamp(0.72rem,  0.68rem + 0.2vw,  0.8rem);
  --text-sm:   clamp(0.8rem,   0.75rem + 0.25vw, 0.875rem);
  --text-base: clamp(0.875rem, 0.82rem + 0.28vw, 0.975rem);
  --text-lg:   clamp(1rem,     0.9rem  + 0.5vw,  1.2rem);
  --text-xl:   clamp(1.2rem,   1rem    + 0.9vw,  1.6rem);
  --text-2xl:  clamp(1.5rem,   1.1rem  + 1.4vw,  2rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --radius-sm: 0.3rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.4rem;
  --radius-full: 9999px;

  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-focus: cubic-bezier(0.32, 0.72, 0, 1);
  --t: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Era palette */
  --era-1: #a78bfa;
  --era-2: #38bdf8;
  --era-3: #fb923c;
  --era-4: #f472b6;
  --era-5: #4ade80;
  --era-6: #60a5fa;

  /* Header height */
  --header-h: 72px;
  --swiper-h: 38px;
}

/* ══ LIGHT MODE ══ */
:root, [data-theme="light"] {
  --bg:        #f5f4f0;
  --surface:   rgba(0,0,0,0.04);
  --surface-2: rgba(0,0,0,0.02);
  --offset:    rgba(0,0,0,0.06);
  --border:    rgba(0,0,0,0.10);
  --divider:   rgba(0,0,0,0.07);

  --text:      #16151a;
  --muted:     rgba(40,38,55,0.65);
  --faint:     rgba(40,38,55,0.38);
  --inverse:   #f5f4f0;

  --accent:    #6366f1;
  --accent-h:  #4f46e5;
  --accent-dim: rgba(99,102,241,0.10);
  --accent-glow: rgba(99,102,241,0.18);

  --gold:      #d97706;
  --gold-dim:  rgba(217,119,6,0.10);

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.18);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.09), inset 0 1px 0 rgba(255,255,255,0.7);
  --shadow-focus: 0 16px 64px rgba(0,0,0,0.18), 0 4px 20px rgba(0,0,0,0.12);

  /* Glass recipe — light mode uses white tint */
  --glass-bg:      rgba(255,255,255,0.55);
  --glass-border:  rgba(0,0,0,0.10);
  --glass-blur:    18px;
  --glass-shadow:  0 8px 32px rgba(0,0,0,0.10), inset 0 1px 0 rgba(255,255,255,0.8);

  /* Sticky bars background */
  --bar-bg: rgba(245,244,240,0.80);
}

/* ══ DARK MODE ══ */
[data-theme="dark"] {
  --bg:        #070810;
  --surface:   rgba(255,255,255,0.05);
  --surface-2: rgba(255,255,255,0.03);
  --offset:    rgba(255,255,255,0.07);
  --border:    rgba(255,255,255,0.10);
  --divider:   rgba(255,255,255,0.06);

  --text:      #dde1f5;
  --muted:     rgba(180,186,220,0.7);
  --faint:     rgba(130,138,180,0.45);
  --inverse:   #070810;

  --accent:    #818cf8;
  --accent-h:  #6366f1;
  --accent-dim: rgba(129,140,248,0.10);
  --accent-glow: rgba(129,140,248,0.22);

  --gold:      #fbbf24;
  --gold-dim:  rgba(251,191,36,0.09);

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.5);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.65);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.75);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.55), inset 0 1px 0 rgba(255,255,255,0.07);
  --shadow-focus: 0 16px 64px rgba(0,0,0,0.85), 0 4px 20px rgba(0,0,0,0.6);

  /* Glass recipe — dark mode */
  --glass-bg:      rgba(255,255,255,0.06);
  --glass-border:  rgba(255,255,255,0.14);
  --glass-blur:    18px;
  --glass-shadow:  0 8px 32px rgba(0,0,0,0.38), inset 0 1px 0 rgba(255,255,255,0.1);

  /* Sticky bars background */
  --bar-bg: rgba(7,8,16,0.75);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg:#070810;--surface:rgba(255,255,255,0.05);--surface-2:rgba(255,255,255,0.03);
    --offset:rgba(255,255,255,0.07);--border:rgba(255,255,255,0.10);
    --divider:rgba(255,255,255,0.06);--text:#dde1f5;--muted:rgba(180,186,220,0.7);
    --faint:rgba(130,138,180,0.45);--inverse:#070810;--accent:#818cf8;
    --accent-h:#6366f1;--accent-dim:rgba(129,140,248,0.10);
    --accent-glow:rgba(129,140,248,0.22);--gold:#fbbf24;--gold-dim:rgba(251,191,36,0.09);
    --shadow-sm:0 2px 8px rgba(0,0,0,0.5);--shadow-md:0 6px 24px rgba(0,0,0,0.65);
    --shadow-lg:0 12px 40px rgba(0,0,0,0.75);
    --shadow-card:0 4px 24px rgba(0,0,0,0.55),inset 0 1px 0 rgba(255,255,255,0.07);
    --shadow-focus:0 16px 64px rgba(0,0,0,0.85),0 4px 20px rgba(0,0,0,0.6);
    --glass-bg:rgba(255,255,255,0.06);--glass-border:rgba(255,255,255,0.14);
    --glass-blur:18px;--glass-shadow:0 8px 32px rgba(0,0,0,0.38),inset 0 1px 0 rgba(255,255,255,0.1);
    --bar-bg:rgba(7,8,16,0.75);
  }
}

/* ===========================
   RESET
   =========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text);
  background: var(--bg);
  min-height: 100dvh;
  line-height: 1.6;
  overflow-x: hidden;
  overflow-y: auto;
  transition: background 0.3s var(--ease-out), color 0.3s var(--ease-out);
}
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent-dim); color: var(--text); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ===========================
   GLASSMORPHISM ORBS (background ambient)
   =========================== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 45% at 15% 20%, rgba(129,140,248,0.22) 0%, transparent 70%),
    radial-gradient(ellipse 40% 50% at 80% 15%, rgba(244,114,182,0.18) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 75% 80%, rgba(56,189,248,0.15) 0%, transparent 65%),
    radial-gradient(ellipse 35% 45% at 20% 75%, rgba(74,222,128,0.13) 0%, transparent 60%);
  animation: orb-drift 20s ease-in-out infinite alternate;
}

/* In light mode, tone down the orb intensity */
[data-theme="light"] body::before,
:root:not([data-theme]) body::before {
  opacity: 0.45;
}

@keyframes orb-drift {
  0%   { background-position: 0% 0%; }
  33%  {
    background:
      radial-gradient(ellipse 55% 45% at 20% 30%, rgba(129,140,248,0.22) 0%, transparent 70%),
      radial-gradient(ellipse 40% 50% at 75% 10%, rgba(244,114,182,0.18) 0%, transparent 65%),
      radial-gradient(ellipse 50% 40% at 70% 85%, rgba(56,189,248,0.15) 0%, transparent 65%),
      radial-gradient(ellipse 35% 45% at 25% 70%, rgba(74,222,128,0.13) 0%, transparent 60%);
  }
  66%  {
    background:
      radial-gradient(ellipse 55% 45% at 10% 15%, rgba(129,140,248,0.22) 0%, transparent 70%),
      radial-gradient(ellipse 40% 50% at 85% 25%, rgba(244,114,182,0.18) 0%, transparent 65%),
      radial-gradient(ellipse 50% 40% at 80% 75%, rgba(56,189,248,0.15) 0%, transparent 65%),
      radial-gradient(ellipse 35% 45% at 15% 80%, rgba(74,222,128,0.13) 0%, transparent 60%);
  }
  100% {
    background:
      radial-gradient(ellipse 55% 45% at 18% 22%, rgba(129,140,248,0.22) 0%, transparent 70%),
      radial-gradient(ellipse 40% 50% at 78% 18%, rgba(244,114,182,0.18) 0%, transparent 65%),
      radial-gradient(ellipse 50% 40% at 72% 82%, rgba(56,189,248,0.15) 0%, transparent 65%),
      radial-gradient(ellipse 35% 45% at 22% 72%, rgba(74,222,128,0.13) 0%, transparent 60%);
  }
}

/* ===========================
   APP SHELL
   =========================== */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  position: relative;
  z-index: 1;
}

/* ===========================
   HEADER — glassmorphism
   =========================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--bar-bg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
  padding: 0 var(--space-10);
  overflow: hidden;
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.header::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(128,128,128,0.08) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.5;
  pointer-events: none;
}

.header::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--era-1) 16%,
    var(--era-2) 32%,
    var(--era-3) 48%,
    var(--era-4) 64%,
    var(--era-5) 80%,
    var(--era-6) 100%
  );
  opacity: 0.5;
}

/* Identity */
.identity {
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: var(--space-3);
  flex-shrink: 0;
}

.monogram {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.id-text { display: flex; flex-direction: column; gap: 1px; }

.id-name {
  font-family: var(--font-display);
  font-size: clamp(1rem, 0.85rem + 0.7vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
  /* Gradient text */
  background: linear-gradient(120deg, var(--text) 0%, var(--era-1) 60%, var(--era-4) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.id-name span { -webkit-text-fill-color: inherit; }

.id-role {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* Right column */
.hd-right {
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: var(--space-3);
  flex-shrink: 0;
}
.theme-btn {
  width: 32px; height: 32px; border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  transition: all var(--t);
}
.theme-btn:hover { background: var(--offset); border-color: var(--accent); color: var(--text); }

.yrs-badge {
  font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 600;
  color: var(--text);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  padding: 3px var(--space-3); border-radius: var(--radius-full); white-space: nowrap;
}
.edu-badge {
  font-size: var(--text-xs); color: var(--muted);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  padding: 3px var(--space-3); border-radius: var(--radius-md);
  text-align: right; line-height: 1.4; white-space: nowrap;
}
.edu-badge strong { display: block; color: var(--text); font-weight: 600; font-size: var(--text-xs); }

/* ===========================
   SKILLS MARQUEE SWIPER
   =========================== */
.skills-swiper {
  position: sticky;
  top: var(--header-h);
  z-index: 99;
  height: var(--swiper-h);
  background: var(--bar-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
  transition: background 0.3s var(--ease-out);
}

.skills-swiper:hover .marquee-track { animation-play-state: paused; }

.marquee-track {
  display: flex;
  align-items: center;
  gap: 0;
  white-space: nowrap;
  animation: marquee-scroll 38s linear infinite;
  will-change: transform;
}

.marquee-set {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  flex-shrink: 0;
}

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px var(--space-3);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 500; color: var(--muted);
  white-space: nowrap;
  transition: background var(--t), border-color var(--t), color var(--t);
  cursor: default;
  flex-shrink: 0;
  backdrop-filter: blur(6px);
}
.chip.on,
.chip:hover {
  background: var(--offset);
  border-color: var(--accent);
  color: var(--text);
}
.chip-dot { width: 5px; height: 5px; border-radius: var(--radius-full); background: currentColor; opacity: 0.5; }

.chip-sep {
  width: 3px; height: 3px;
  border-radius: var(--radius-full);
  background: var(--border);
  flex-shrink: 0;
  margin: 0 var(--space-2);
}

/* ===========================
   MAIN
   =========================== */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* ===========================
   FILTER BAR — glass
   =========================== */
.filter-bar {
  position: sticky;
  top: calc(var(--header-h) + var(--swiper-h));
  z-index: 90;
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-10);
  background: var(--bar-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  overflow-x: auto; scrollbar-width: none;
  transition: background 0.3s var(--ease-out);
}
.filter-bar::-webkit-scrollbar { display: none; }

.filter-label {
  font-size: var(--text-xs); font-family: var(--font-mono);
  color: var(--faint); text-transform: uppercase; letter-spacing: 0.1em;
  white-space: nowrap; flex-shrink: 0; margin-right: var(--space-1);
}
.f-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px var(--space-3);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 500; color: var(--muted);
  white-space: nowrap; cursor: pointer; flex-shrink: 0;
  transition: all var(--t);
}
.f-btn:hover { background: var(--offset); border-color: var(--accent); color: var(--text); }
.f-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.f-dot { width: 8px; height: 8px; border-radius: var(--radius-full); flex-shrink: 0; }

/* ===========================
   TIMELINE TRACK
   =========================== */
.timeline-track {
  flex: 1;
  overflow-x: auto;
  overflow-y: visible;
  padding: 0 var(--space-8) var(--space-10) var(--space-8);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  min-height: calc(100vh - var(--header-h) - var(--swiper-h) - 48px);
  position: relative;
}
.timeline-track::-webkit-scrollbar { height: 5px; }
.timeline-track::-webkit-scrollbar-track { background: transparent; }
.timeline-track::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.timeline-h {
  display: flex;
  align-items: stretch;
  min-width: max-content;
  min-height: 600px;
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  position: relative;
  transition: transform 0.52s var(--ease-focus);
}

/* ── Horizontal axis — glowing gradient ── */
.h-axis {
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 2px;
  transform: translateY(-50%);
  background: linear-gradient(90deg,
    var(--era-1) 0%, var(--era-1) 16.5%,
    var(--era-2) 16.5%, var(--era-2) 33%,
    var(--era-3) 33%, var(--era-3) 49.5%,
    var(--era-4) 49.5%, var(--era-4) 66%,
    var(--era-5) 66%, var(--era-5) 82.5%,
    var(--era-6) 82.5%, var(--era-6) 100%
  );
  filter: blur(1px);
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(129,140,248,0.3);
}

/* ===========================
   STOP
   =========================== */
.stop {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: clamp(340px, 28vw, 420px);
  flex-shrink: 0;
  position: relative;
  transition:
    opacity 0.42s var(--ease-out),
    transform 0.52s var(--ease-focus),
    filter 0.42s var(--ease-out);
  padding: 0 var(--space-4);
  transform-origin: center center;
}

.stop.dim { opacity: 0.08 !important; pointer-events: none !important; animation: none !important; }

.timeline-h.has-focus .stop:not(.focused) {
  opacity: 0.1;
  transform: scale(0.88);
  pointer-events: none;
  filter: blur(2px);
}

.stop.focused {
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

.stop-top {
  flex: 1;
  display: flex;
  align-items: flex-end;
  width: 100%;
  padding-bottom: var(--space-3);
}

.stop-bottom {
  flex: 1;
  display: flex;
  align-items: flex-start;
  width: 100%;
  padding-top: var(--space-3);
}

.stop-node-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  gap: 0;
}

.tick-up, .tick-down {
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border), transparent);
  flex-shrink: 0;
}
.tick-up   { height: 20px; }
.tick-down { height: 20px; }

/* ── Node ── */
.node {
  width: 52px; height: 52px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 2;
  border: 2px solid var(--border);
  transition: transform var(--t), box-shadow var(--t), opacity var(--t);
  flex-shrink: 0;
  text-decoration: none;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.node:hover { transform: scale(1.14); text-decoration: none; }
.node:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.node-initials {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.node-date {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--faint);
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.04em;
  line-height: 1.3;
  margin-top: 6px;
}

/* ===========================
   CARD — frosted glass
   =========================== */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-5) var(--space-6);
  width: 100%;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.2);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.2);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--t),
    box-shadow var(--t),
    border-color var(--t);
}

/* Top shimmer line */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

/* Inner highlight sheen */
.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.35) 50%, transparent 100%);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), 0 0 30px var(--accent-glow);
  border-color: var(--accent);
}

/* ── Focus Overlay ── */
.focus-overlay {
  position: fixed;
  top: calc(var(--header-h) + var(--swiper-h) + 44px);
  left: 50%;
  transform: translateX(-50%);
  width: min(880px, 92vw);
  height: calc(100dvh - var(--header-h) - var(--swiper-h) - 44px - 20px);
  z-index: 200;
  background: var(--bar-bg);
  backdrop-filter: blur(28px) saturate(1.3);
  -webkit-backdrop-filter: blur(28px) saturate(1.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-focus), inset 0 1px 0 var(--glass-border);
  overflow: hidden;
  display: none;
  flex-direction: column;
}
.focus-overlay.visible {
  display: flex;
  animation: overlay-in 0.38s var(--ease-focus) both;
}
@keyframes overlay-in {
  from { opacity: 0; transform: translateX(-50%) scale(0.97) translateY(6px); }
  to   { opacity: 1; transform: translateX(-50%) scale(1)   translateY(0); }
}

/* Era accent bar */
.focus-overlay::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  z-index: 1;
  filter: blur(0.5px);
}
.focus-overlay[data-era="michigan"]::before { background: var(--era-1); box-shadow: 0 0 12px var(--era-1); }
.focus-overlay[data-era="cag"]::before      { background: var(--era-2); box-shadow: 0 0 12px var(--era-2); }
.focus-overlay[data-era="qpg"]::before      { background: var(--era-3); box-shadow: 0 0 12px var(--era-3); }
.focus-overlay[data-era="theramax"]::before { background: var(--era-4); box-shadow: 0 0 12px var(--era-4); }
.focus-overlay[data-era="rpt"]::before      { background: var(--era-5); box-shadow: 0 0 12px var(--era-5); }
.focus-overlay[data-era="precision"]::before{ background: var(--era-6); box-shadow: 0 0 12px var(--era-6); }

/* Backdrop */
.focus-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 199;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  display: none;
}
.focus-backdrop.visible {
  display: block;
  animation: backdrop-in 0.28s ease both;
}
@keyframes backdrop-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Overlay header */
.ov-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: calc(var(--space-4) + 4px) var(--space-6) var(--space-4);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.ov-back {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: var(--text-xs); font-weight: 600;
  color: var(--faint);
  cursor: pointer; background: var(--glass-bg);
  padding: 5px 10px 5px 8px;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  transition: all var(--t);
  flex-shrink: 0;
  white-space: nowrap;
  margin-top: 2px;
}
.ov-back:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }
.ov-meta { min-width: 0; flex: 1; }
.ov-active { margin-bottom: 4px; }
.ov-co {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 3px;
}
.ov-role {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 4px;
}
.ov-period-loc {
  display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap;
}
.ov-period {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
}
.ov-loc {
  font-size: var(--text-xs); color: var(--faint);
  display: flex; align-items: center; gap: 4px;
}

/* Overlay body */
.ov-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-5) var(--space-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr;
  column-gap: var(--space-8);
  row-gap: var(--space-4);
  align-content: start;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.ov-body::-webkit-scrollbar { width: 4px; }
.ov-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.ov-summary {
  grid-column: 1 / -1;
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.6;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}
.ov-achievements { grid-column: 1; }
.ov-skills       { grid-column: 2; }

/* Era role colors */
.focus-overlay[data-era="michigan"] .ov-role { color: var(--era-1); }
.focus-overlay[data-era="cag"]      .ov-role { color: var(--era-2); }
.focus-overlay[data-era="qpg"]      .ov-role { color: var(--era-3); }
.focus-overlay[data-era="theramax"] .ov-role { color: var(--era-4); }
.focus-overlay[data-era="rpt"]      .ov-role { color: var(--era-5); }
.focus-overlay[data-era="precision"].ov-role { color: var(--era-6); }

.focus-overlay[data-era="michigan"] .ach-dot { background: var(--era-1); }
.focus-overlay[data-era="cag"]      .ach-dot { background: var(--era-2); }
.focus-overlay[data-era="qpg"]      .ach-dot { background: var(--era-3); }
.focus-overlay[data-era="theramax"] .ach-dot { background: var(--era-4); }
.focus-overlay[data-era="rpt"]      .ach-dot { background: var(--era-5); }
.focus-overlay[data-era="precision"].ach-dot { background: var(--era-6); }

.focus-overlay[data-era="michigan"] .tag { background: color-mix(in srgb, var(--era-1) 12%, transparent); color: var(--era-1); border: 1px solid color-mix(in srgb, var(--era-1) 28%, transparent); }
.focus-overlay[data-era="cag"]      .tag { background: color-mix(in srgb, var(--era-2) 12%, transparent); color: var(--era-2); border: 1px solid color-mix(in srgb, var(--era-2) 28%, transparent); }
.focus-overlay[data-era="qpg"]      .tag { background: color-mix(in srgb, var(--era-3) 12%, transparent); color: var(--era-3); border: 1px solid color-mix(in srgb, var(--era-3) 28%, transparent); }
.focus-overlay[data-era="theramax"] .tag { background: color-mix(in srgb, var(--era-4) 12%, transparent); color: var(--era-4); border: 1px solid color-mix(in srgb, var(--era-4) 28%, transparent); }
.focus-overlay[data-era="rpt"]      .tag { background: color-mix(in srgb, var(--era-5) 12%, transparent); color: var(--era-5); border: 1px solid color-mix(in srgb, var(--era-5) 28%, transparent); }
.focus-overlay[data-era="precision"].tag { background: color-mix(in srgb, var(--era-6) 12%, transparent); color: var(--era-6); border: 1px solid color-mix(in srgb, var(--era-6) 28%, transparent); }

.card.open {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-dim), var(--shadow-md);
  transform: none;
}

.card .card-back { display: none !important; }

.click-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--faint);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  letter-spacing: 0.05em;
}
.timeline-h:not(.has-focus) .stop:hover .click-hint { opacity: 1; }

.card-co {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 3px;
}

.card-role {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--space-2);
}

.card-period {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
  display: block;
  margin-bottom: var(--space-2);
}

.card-loc {
  font-size: var(--text-xs);
  color: var(--faint);
  display: flex; align-items: center; gap: 4px;
  margin-bottom: var(--space-3);
}

.card-summary {
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
}

.expand-btn {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: var(--text-xs); font-weight: 600;
  color: var(--accent);
  transition: gap var(--t), opacity var(--t);
  padding: 0;
}
.expand-btn:hover { gap: var(--space-2); }
.arrow { transition: transform 0.3s var(--ease-out); flex-shrink: 0; }
.card.open .arrow { transform: rotate(180deg); }

.expand-panel {
  display: none;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  animation: panel-in 0.28s var(--ease-out);
}
@keyframes panel-in {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}
.card.open .expand-panel { display: block; }

.expand-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: var(--space-2);
}

.achlist {
  list-style: none;
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: var(--space-4);
}
.achlist li {
  display: flex; gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.6;
}
.ach-dot {
  width: 5px; height: 5px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  margin-top: 8px;
  box-shadow: 0 0 4px currentColor;
}

.tags {
  display: flex; flex-wrap: wrap; gap: 5px;
  margin-bottom: var(--space-3);
}
.tag {
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
  backdrop-filter: blur(4px);
}

.sites {
  display: flex; flex-wrap: wrap; gap: 5px;
  margin-top: var(--space-2);
}
.site-a {
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--accent);
  transition: all var(--t);
  backdrop-filter: blur(4px);
}
.site-a:hover { background: color-mix(in srgb, var(--accent) 22%, transparent); border-color: var(--accent); color: var(--text); }

/* Active pulsing tag */
.active-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 10px; font-family: var(--font-mono); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 2px 8px; border-radius: var(--radius-full);
  background: rgba(74,222,128,0.1);
  color: var(--era-5);
  border: 1px solid rgba(74,222,128,0.25);
  margin-bottom: var(--space-2);
  backdrop-filter: blur(4px);
  box-shadow: 0 0 8px rgba(74,222,128,0.15);
}
.active-tag::before {
  content: ''; width: 6px; height: 6px;
  border-radius: var(--radius-full); background: var(--era-5);
  box-shadow: 0 0 6px var(--era-5);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:0.35;transform:scale(0.6);}
}

/* ── Era colors with glass glow ── */
[data-era="michigan"] .node { background: rgba(167,139,250,0.25); box-shadow: 0 0 20px rgba(167,139,250,0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
[data-era="michigan"] .card::before{ background: var(--era-1); box-shadow: 0 0 8px var(--era-1); }
[data-era="michigan"] .card-role   { color: var(--era-1); }
[data-era="michigan"] .ach-dot     { background: var(--era-1); }
[data-era="michigan"] .tag         { background: color-mix(in srgb, var(--era-1) 12%, transparent); color: var(--era-1); border: 1px solid color-mix(in srgb, var(--era-1) 28%, transparent); }
[data-era="michigan"] .tick-up,
[data-era="michigan"] .tick-down   { background: linear-gradient(to bottom, transparent, var(--era-1), transparent); opacity: 0.5; }

[data-era="cag"] .node { background: rgba(56,189,248,0.2); box-shadow: 0 0 20px rgba(56,189,248,0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
[data-era="cag"] .card::before{ background: var(--era-2); box-shadow: 0 0 8px var(--era-2); }
[data-era="cag"] .card-role   { color: var(--era-2); }
[data-era="cag"] .ach-dot     { background: var(--era-2); }
[data-era="cag"] .tag         { background: color-mix(in srgb, var(--era-2) 12%, transparent); color: var(--era-2); border: 1px solid color-mix(in srgb, var(--era-2) 28%, transparent); }
[data-era="cag"] .tick-up,
[data-era="cag"] .tick-down   { background: linear-gradient(to bottom, transparent, var(--era-2), transparent); opacity: 0.5; }

[data-era="qpg"] .node { background: rgba(251,146,60,0.2); box-shadow: 0 0 20px rgba(251,146,60,0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
[data-era="qpg"] .card::before{ background: var(--era-3); box-shadow: 0 0 8px var(--era-3); }
[data-era="qpg"] .card-role   { color: var(--era-3); }
[data-era="qpg"] .ach-dot     { background: var(--era-3); }
[data-era="qpg"] .tag         { background: color-mix(in srgb, var(--era-3) 12%, transparent); color: var(--era-3); border: 1px solid color-mix(in srgb, var(--era-3) 28%, transparent); }
[data-era="qpg"] .tick-up,
[data-era="qpg"] .tick-down   { background: linear-gradient(to bottom, transparent, var(--era-3), transparent); opacity: 0.5; }

[data-era="theramax"] .node { background: rgba(244,114,182,0.2); box-shadow: 0 0 20px rgba(244,114,182,0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
[data-era="theramax"] .card::before{ background: var(--era-4); box-shadow: 0 0 8px var(--era-4); }
[data-era="theramax"] .card-role   { color: var(--era-4); }
[data-era="theramax"] .ach-dot     { background: var(--era-4); }
[data-era="theramax"] .tag         { background: color-mix(in srgb, var(--era-4) 12%, transparent); color: var(--era-4); border: 1px solid color-mix(in srgb, var(--era-4) 28%, transparent); }
[data-era="theramax"] .tick-up,
[data-era="theramax"] .tick-down   { background: linear-gradient(to bottom, transparent, var(--era-4), transparent); opacity: 0.5; }

[data-era="rpt"] .node { background: rgba(74,222,128,0.2); box-shadow: 0 0 20px rgba(74,222,128,0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
[data-era="rpt"] .card::before{ background: var(--era-5); box-shadow: 0 0 8px var(--era-5); }
[data-era="rpt"] .card-role   { color: var(--era-5); }
[data-era="rpt"] .ach-dot     { background: var(--era-5); }
[data-era="rpt"] .tag         { background: color-mix(in srgb, var(--era-5) 12%, transparent); color: var(--era-5); border: 1px solid color-mix(in srgb, var(--era-5) 28%, transparent); }
[data-era="rpt"] .tick-up,
[data-era="rpt"] .tick-down   { background: linear-gradient(to bottom, transparent, var(--era-5), transparent); opacity: 0.5; }

[data-era="precision"] .node { background: rgba(96,165,250,0.2); box-shadow: 0 0 20px rgba(96,165,250,0.5), inset 0 1px 0 rgba(255,255,255,0.2); }
[data-era="precision"] .card::before{ background: var(--era-6); box-shadow: 0 0 8px var(--era-6); }
[data-era="precision"] .card-role   { color: var(--era-6); }
[data-era="precision"] .ach-dot     { background: var(--era-6); }
[data-era="precision"] .tag         { background: color-mix(in srgb, var(--era-6) 12%, transparent); color: var(--era-6); border: 1px solid color-mix(in srgb, var(--era-6) 28%, transparent); }
[data-era="precision"] .tick-up,
[data-era="precision"] .tick-down   { background: linear-gradient(to bottom, transparent, var(--era-6), transparent); opacity: 0.5; }

/* ===========================
   FOOTER
   =========================== */
.footer {
  padding: var(--space-3) var(--space-8);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--faint);
  border-top: 1px solid var(--border);
  background: var(--bar-bg);
  backdrop-filter: blur(12px);
  transition: background 0.3s var(--ease-out);
}
.footer a { color: var(--accent); }
.footer a:hover { text-decoration: underline; }

/* ===========================
   MOBILE
   =========================== */
@media (max-width: 680px) {
  :root {
    --header-h: 60px;
    --swiper-h: 34px;
  }
  .header {
    grid-template-columns: 1fr auto;
    padding: 0 var(--space-4);
    gap: var(--space-3);
  }
  .edu-badge { display: none; }
  .filter-bar { padding: var(--space-3) var(--space-4); }
  .timeline-track { padding: 0 var(--space-3) var(--space-10); }
  .stop { width: clamp(280px, 85vw, 360px); }
  .focus-overlay {
    width: 96vw;
    height: calc(100dvh - var(--header-h) - var(--swiper-h) - 44px - 8px);
  }
  .ov-body { grid-template-columns: 1fr; }
  .ov-achievements { grid-column: 1; }
  .ov-skills { grid-column: 1; }
}

/* ── Site thumbnail ── */
.ov-thumb-wrap { margin-top: var(--space-4); }
.ov-thumb-link {
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
  position: relative;
  backdrop-filter: blur(4px);
}
.ov-thumb-link::after {
  content: '↗ Visit site';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 6px 10px;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 100%);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  opacity: 0;
  transition: opacity var(--t);
}
.ov-thumb-link:hover { transform: translateY(-2px); box-shadow: var(--shadow-md), 0 0 20px var(--accent-glow); border-color: var(--accent); }
.ov-thumb-link:hover::after { opacity: 1; }
.ov-thumb {
  display: block; width: 100%; height: auto;
  aspect-ratio: 16/9; object-fit: cover; object-position: top;
}

/* ── Resume Button — glass style ── */
.resume-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  color: var(--text);
  background: var(--accent-dim);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 6px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 0 12px var(--accent-glow);
}
.resume-btn:hover  { background: color-mix(in srgb, var(--accent) 25%, transparent); border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 0 20px var(--accent-glow); }
.resume-btn:active { transform: translateY(0); }
.resume-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

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