/* =========================================================
   TOKENS
   ========================================================= */
[data-mode="dark"]{
  --bg0:#10151A; --bg1:#1A2226; --bg2:#212B2F;
  --ink:#ECE8DE; --ink-muted:#9CA3A0; --line:rgba(236,232,222,0.12);
  --shadow: 0 8px 30px rgba(0,0,0,0.35);
}
[data-mode="light"]{
  --bg0:#F6F3EC; --bg1:#FFFFFF; --bg2:#EFEBE1;
  --ink:#171A16; --ink-muted:#5B5F58; --line:rgba(23,26,22,0.12);
  --shadow: 0 8px 24px rgba(23,26,22,0.08);
}
[data-theme="teal"][data-mode="dark"]{ --accent:#22A47E; --coral:#D9673C; --band1:#1B3C33; --band2:#1F5B49; --band3:#26805F; }
[data-theme="teal"][data-mode="light"]{ --accent:#0F6E56; --coral:#B84E27; --band1:#DCEFE8; --band2:#BFE3D5; --band3:#9CD4BC; }
[data-theme="slate"][data-mode="dark"]{ --accent:#6C9BD1; --coral:#D9673C; --band1:#1E2C3A; --band2:#26405A; --band3:#2E5A82; }
[data-theme="slate"][data-mode="light"]{ --accent:#2F5C91; --coral:#B84E27; --band1:#DCE6F2; --band2:#C0D4EC; --band3:#9EBFE3; }
[data-theme="amber"][data-mode="dark"]{ --accent:#D99A3C; --coral:#B14EDA; --band1:#3A2E1B; --band2:#5A461F; --band3:#826023; }
[data-theme="amber"][data-mode="light"]{ --accent:#A9660F; --coral:#8E3AB8; --band1:#F2E6D2; --band2:#ECD5A6; --band3:#E3BE72; }
[data-theme="forest"][data-mode="dark"]{ --accent:#5FA35A; --coral:#D9673C; --band1:#1E331B; --band2:#2C4E27; --band3:#3C6E34; }
[data-theme="forest"][data-mode="light"]{ --accent:#2E5F2C; --coral:#B84E27; --band1:#E1EEDF; --band2:#C6E1C2; --band3:#A5D19E; }
[data-theme="indigo"][data-mode="dark"]{ --accent:#8B7FD1; --coral:#D99A3C; --band1:#251E3A; --band2:#332B57; --band3:#453A7D; }
[data-theme="indigo"][data-mode="light"]{ --accent:#5A4CA0; --coral:#A9660F; --band1:#E7E3F5; --band2:#D2C9ED; --band3:#B7A8E1; }
[data-cb="on"][data-mode="dark"]{ --accent:#4C93FF; --coral:#F5A524; }
[data-cb="on"][data-mode="light"]{ --accent:#1D5FD1; --coral:#B36B00; }
[data-size="sm"]{ --fs:14.5px; }
[data-size="md"]{ --fs:16px; }
[data-size="lg"]{ --fs:18px; }
[data-size="xl"]{ --fs:20.5px; }
[data-layout="narrow"]{ --cw:720px; }
[data-layout="normal"]{ --cw:1080px; }
[data-layout="wide"]{ --cw:1320px; }

/* =========================================================
   BASE
   ========================================================= */
*{box-sizing:border-box;}
body{
  margin:0; background:var(--bg0); color:var(--ink);
  font-family:'Inter',sans-serif; font-size:var(--fs);
  transition:background .25s ease,color .25s ease;
}
h1,h2,h3{ font-family:'Zilla Slab',serif; margin:0; }
p{ line-height:1.6; color:var(--ink); }
a{ color:inherit; }
.eyebrow{
  font-family:'IBM Plex Mono',monospace; font-size:.72rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--accent);
}

/* =========================================================
   NAV
   ========================================================= */
nav{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:20px;
  padding:16px max(24px,calc((100% - var(--cw))/2)); border-bottom:1px solid var(--line);
  position:sticky; top:0; background:var(--bg0); z-index:30;
}
.nav-left{ display:flex; align-items:center; gap:16px; }
.navbrand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.navbrand .navphoto{ width:40px; height:40px; border-radius:50%; overflow:hidden; border:1.5px solid var(--line); flex-shrink:0; }
.navbrand .navphoto img{ display:block; width:100%; height:100%; object-fit:cover; }
.wordmark{ font-family:'Zilla Slab',serif; font-weight:700; font-size:1.3rem; color:var(--ink); text-decoration:none; }
.wordmark span{ color:var(--accent); }
.wordmark small{ font-size:.6rem; color:var(--ink-muted); font-family:'IBM Plex Mono',monospace; }
.nav-identity{ display:flex; flex-direction:column; gap:2px; padding-left:16px; border-left:1px solid var(--line); }
.nav-name{ font-family:'Zilla Slab',serif; font-size:1.15rem; font-weight:700; color:var(--ink); line-height:1.15; }
.nav-edu{ display:flex; flex-direction:column; }
.nav-edu span{ font-family:'Inter',sans-serif; font-size:.7rem; font-weight:600; color:var(--ink-muted); line-height:1.4; }
.nav-right{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.nav-linkedin{
  display:flex; align-items:center; gap:8px; text-decoration:none; color:var(--ink);
  border:1px solid var(--line); border-radius:20px; padding:6px 14px 6px 6px; font-family:'IBM Plex Mono',monospace; font-size:.8rem;
}
.nav-linkedin:hover{ border-color:var(--accent); }
.nav-linkedin .li-icon{
  display:flex; align-items:center; justify-content:center; width:20px; height:20px; border-radius:5px;
  background:var(--accent); color:var(--bg0); font-family:'Inter',sans-serif; font-weight:700; font-size:.64rem;
}
.era-range a{ color:inherit; text-decoration:underline; text-decoration-color:color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset:2px; }
.era-range a:hover{ text-decoration-color:var(--accent); }
.navlinks{ display:flex; align-items:center; gap:6px; }
.tab{
  font-family:'IBM Plex Mono',monospace; font-size:.8rem; padding:8px 14px; border-radius:8px;
  color:var(--ink-muted); text-decoration:none; cursor:pointer; border:1px solid transparent;
}
.tab.active{ color:var(--ink); background:var(--bg2); border-color:var(--line); }
.tab.disabled{ opacity:.4; cursor:not-allowed; }
.gearbtn{
  width:34px; height:34px; border-radius:50%; border:1px solid var(--line); background:var(--bg1);
  color:var(--ink); cursor:pointer; font-size:1rem; margin-left:8px;
}
.settings{
  display:none; position:fixed; top:100px; right:24px; width:260px; background:var(--bg1);
  border:1px solid var(--line); border-radius:14px; padding:18px; box-shadow:var(--shadow); z-index:40;
}
.settings.open{ display:block; }
.settings h4{ font-family:'IBM Plex Mono',monospace; font-size:.68rem; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-muted); margin:14px 0 8px; }
.settings h4:first-child{ margin-top:0; }
.swatchrow,.segrow{ display:flex; gap:8px; }
.swatch{ width:26px; height:26px; border-radius:50%; border:2px solid var(--line); cursor:pointer; }
.sw-teal{background:#0F6E56;} .sw-slate{background:#2F5C91;} .sw-amber{background:#A9660F;} .sw-forest{background:#2E5F2C;} .sw-indigo{background:#5A4CA0;}
.swatch.active{ border-color:var(--ink); }
.seg{ flex:1; padding:6px 0; font-size:.75rem; border-radius:6px; border:1px solid var(--line); background:var(--bg2); color:var(--ink-muted); cursor:pointer; }
.seg.active{ background:var(--accent); color:#08110D; border-color:var(--accent); font-weight:600; }
.settings .togglerow{ display:flex; align-items:center; justify-content:space-between; }
.settings .togglerow label{ font-size:.8rem; }
.settings .switch{ position:relative; width:36px; height:20px; }
.settings .switch input{ opacity:0; width:0; height:0; }
.settings .slider{ position:absolute; inset:0; background:var(--bg2); border:1px solid var(--line); border-radius:20px; cursor:pointer; transition:.2s; }
.settings .slider::before{ content:""; position:absolute; width:14px; height:14px; left:2px; top:2px; background:var(--ink-muted); border-radius:50%; transition:.2s; }
.settings input:checked + .slider{ background:var(--accent); }
.settings input:checked + .slider::before{ transform:translateX(16px); background:var(--bg0); }

/* =========================================================
   SCREEN CHROME
   ========================================================= */
.divider{ display:flex; align-items:center; gap:14px; max-width:var(--cw); margin:34px auto 0; padding:0 24px; }
.divider .line{ flex:1; height:1px; background:var(--line); }
.divider .label{ font-family:'IBM Plex Mono',monospace; font-size:.72rem; color:var(--ink-muted); white-space:nowrap; }
.screenwrap{ max-width:var(--cw); margin:0 auto; padding:18px 24px 90px; }
.screen{ background:var(--bg1); border:1px solid var(--line); border-radius:16px; overflow:hidden; box-shadow:var(--shadow); }
.screen-chrome{ display:flex; gap:6px; padding:12px 16px; border-bottom:1px solid var(--line); }
.dot{ width:10px; height:10px; border-radius:50%; background:var(--band3); opacity:.6; }

/* =========================================================
   LEVEL CONTENT
   ========================================================= */
.level{ padding:34px 40px 40px; }
.level-title{ font-size:1.7rem; margin-bottom:4px; }
.lede{ color:var(--ink-muted); margin-bottom:26px; }

.era{
  border-left:3px solid var(--band2); padding:16px 0 16px 20px; margin-bottom:20px;
  border-radius:0 10px 10px 0; transition:background .3s ease, border-color .3s ease;
}
.era.highlight{ background:var(--band1); border-left-color:var(--accent); }
.era .era-range{ font-family:'IBM Plex Mono',monospace; font-size:.85rem; font-weight:600; color:var(--accent); letter-spacing:.06em; }
.era h3{ font-size:1.15rem; margin:4px 0 8px; }
.era p{ margin:0 0 6px; }
.era .org{ color:var(--ink-muted); font-size:.85rem; }
.era .sig{ font-family:'IBM Plex Mono',monospace; font-size:.72rem; color:var(--ink-muted); margin-top:8px; }
.era .sig b{ color:var(--ink); font-weight:600; }
.era ul.metrics{ margin:8px 0 0; padding-left:18px; }
.era ul.metrics li{ margin-bottom:4px; }

.project{ margin-top:16px; padding-top:14px; border-top:1px dashed var(--line); }
.project:first-of-type{ margin-top:12px; }
.project h4{ font-family:'Zilla Slab',serif; font-size:1.05rem; margin:0 0 2px; }
.project .meta{ font-family:'IBM Plex Mono',monospace; font-size:.8rem; color:var(--ink-muted); margin-bottom:8px; }
.project ul{ margin:0 0 8px; padding-left:18px; }
.project ul li{ margin-bottom:5px; }
.project .skills{ font-size:.78rem; color:var(--ink-muted); }
.project .skills b{ color:var(--accent); font-weight:600; font-family:'IBM Plex Mono',monospace; font-size:.68rem; letter-spacing:.05em; text-transform:uppercase; }

.field{ margin-top:10px; }
.field .k{ font-family:'IBM Plex Mono',monospace; font-size:.68rem; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-muted); margin-bottom:2px; }

.star-box{
  margin-top:14px; padding:14px 16px; border-radius:10px; background:var(--bg2);
  border-left:3px solid var(--coral);
}
.star-box .star-label{
  font-family:'IBM Plex Mono',monospace; font-size:.68rem; letter-spacing:.1em; text-transform:uppercase;
  color:var(--coral); margin-bottom:8px;
}
.star-box .star-row{ margin-bottom:6px; }
.star-box .star-row b{ color:var(--ink); }
.star-box .star-row span{ color:var(--ink-muted); }

/* =========================================================
   VERTICAL TIMELINE — left rail, constant on every level page
   ========================================================= */
.timeline-rail{
  position:fixed; top:130px; left:22px; bottom:40px; width:64px;
  display:flex; flex-direction:column; align-items:center; z-index:20;
}
.timeline-year{
  font-family:'IBM Plex Mono',monospace; font-weight:600; font-size:1rem; color:var(--accent);
  margin-bottom:14px; text-align:center;
}
.timeline-track-wrap{ position:relative; flex:1; display:flex; align-items:center; justify-content:center; }
input#timeline{
  -webkit-appearance:none; appearance:none; width:220px; height:4px;
  background:var(--line); border-radius:2px; outline:none;
  transform:rotate(-90deg); transform-origin:center;
}
input#timeline::-webkit-slider-thumb{
  -webkit-appearance:none; width:18px; height:18px; border-radius:50%;
  background:var(--accent); cursor:pointer; box-shadow:0 0 10px color-mix(in srgb, var(--accent) 60%, transparent);
}
input#timeline::-moz-range-thumb{
  width:18px; height:18px; border-radius:50%; background:var(--accent); border:none; cursor:pointer;
}
.timeline-ticks{
  position:absolute; top:50%; left:0; right:0; height:220px; transform:translateY(-50%);
  pointer-events:none;
}
.timeline-ticks span{
  position:absolute; left:50%;
  font-family:'IBM Plex Mono',monospace; font-size:.65rem; color:var(--ink-muted);
  pointer-events:auto; cursor:pointer; transform:translate(20px,-50%);
  white-space:nowrap;
}
.timeline-ticks span.on{ color:var(--accent); font-weight:600; }
.timeline-label{
  writing-mode:vertical-rl; text-orientation:mixed; margin-top:14px;
  font-family:'IBM Plex Mono',monospace; font-size:.65rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--ink-muted);
}
@media (max-width: 380px){ .timeline-rail{ display:none; } .nav-identity{ display:none; } .nav-linkedin span:not(.li-icon){ display:none; } .nav-linkedin{ padding:6px; } }
@media (min-width: 381px){ nav, .divider, .screenwrap, .hero, .track-section{ padding-left:100px; } }

/* =========================================================
   HOME PAGE
   ========================================================= */
.hero{ max-width:var(--cw); margin:0 auto; padding:70px 24px 40px; }
.hero .eyebrow{ margin-bottom:14px; }
.hero h1{ font-size:2.6rem; line-height:1.15; max-width:760px; margin-bottom:18px; }
.hero p.sub{ color:var(--ink-muted); max-width:560px; margin-bottom:28px; font-size:1.05rem; }
.cta-row{ display:flex; gap:12px; flex-wrap:wrap; }
.btn{
  font-family:'IBM Plex Mono',monospace; font-size:.85rem; padding:12px 20px; border-radius:10px;
  text-decoration:none; cursor:pointer; display:inline-block;
}
.btn-primary{ background:var(--accent); color:#08110D; font-weight:600; }
.btn-secondary{ background:var(--bg1); color:var(--ink); border:1px solid var(--line); }

.track-section{ max-width:var(--cw); margin:0 auto; padding:20px 24px 80px; }
.track-section h2{ font-size:1.6rem; margin-bottom:24px; }
.track-grid{ display:grid; grid-template-columns:1fr; gap:16px; }
@media (min-width:700px){ .track-grid{ grid-template-columns:1fr 1fr; } }
.track-card{
  background:var(--bg1); border:1px solid var(--line); border-radius:14px; padding:22px;
  text-decoration:none; display:block; transition:border-color .2s ease;
}
.track-card:hover{ border-color:var(--accent); }
.track-card .tk-path{ font-family:'IBM Plex Mono',monospace; font-size:.68rem; color:var(--accent); margin-bottom:8px; }
.track-card h3{ font-size:1.15rem; margin-bottom:6px; }
.track-card p{ color:var(--ink-muted); font-size:.9rem; margin-bottom:10px; }
.track-card .tk-meta{ font-family:'IBM Plex Mono',monospace; font-size:.68rem; color:var(--ink-muted); }
.track-card.gated{ opacity:.55; }
.track-card.gated .tk-path{ color:var(--ink-muted); }

footer{
  text-align:center; padding:30px 24px; color:var(--ink-muted);
  font-family:'IBM Plex Mono',monospace; font-size:.68rem; letter-spacing:.1em;
  border-top:1px solid var(--line);
}

/* =========================================================
   CERTIFICATION BADGES — shown above the footer on every page
   ========================================================= */
.badges{ display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:28px; padding:36px 24px; border-top:1px solid var(--line); max-width:var(--cw); margin:0 auto; }
.badges img{ height:72px; width:auto; opacity:.88; transition:opacity .2s ease; }
.badges img:hover{ opacity:1; }
.badges:empty{ display:none; }
@media (min-width:381px){ .badges{ padding-left:100px; } }