/* =========================
    THEME TOKENS (DEFAULT = LIGHT)
    ========================= */
:root{
  --bg: #f7f9fc;

  --text: #0f172a;          /* slate-900 */
  --muted: rgba(15, 23, 42, 0.72);
  --muted-2: rgba(15, 23, 42, 0.55);

  --accent: #2563eb;        /* blue-600 */
  --accent-2: #7c3aed;      /* violet-600 */

  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 10px 25px rgba(15, 23, 42, 0.08);

  /* Surfaces */
  --surface: #ffffff;
  --surface-2: rgba(15,23,42,0.03);
  --surface-3: rgba(15,23,42,0.02);

  /* Header */
  --header-bg: rgba(255,255,255,0.85);

  --radius: 14px;
  --max: 1060px;

  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

/* =========================
    DARK THEME OVERRIDES
    ========================= */
:root[data-theme="dark"]{
  --bg: #0b1220;

  --text: #e6edf7;
  --muted: rgba(230,237,247,0.72);
  --muted-2: rgba(230,237,247,0.55);

  --border: rgba(255,255,255,0.10);
  --shadow: 0 10px 30px rgba(0,0,0,.35);

  --surface: rgba(255,255,255,0.06);
  --surface-2: rgba(255,255,255,0.05);
  --surface-3: rgba(255,255,255,0.04);

  --header-bg: rgba(11,18,32,0.72);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 18% -10%, rgba(37,99,235,0.10), transparent 55%),
    radial-gradient(900px 500px at 95% 15%, rgba(124,58,237,0.08), transparent 45%),
    radial-gradient(800px 600px at 35% 110%, rgba(37,99,235,0.06), transparent 55%),
    var(--bg);
  line-height: 1.55;
}

/* When dark, deepen gradients a bit */
:root[data-theme="dark"] body{
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(96,165,250,0.25), transparent 55%),
    radial-gradient(900px 500px at 95% 15%, rgba(167,139,250,0.20), transparent 45%),
    radial-gradient(800px 600px at 35% 110%, rgba(96,165,250,0.15), transparent 55%),
    var(--bg);
}

/* =========================
    ACCESSIBILITY
    ========================= */
.skip-link{
  position: absolute;
  left: -9999px;
  top: 10px;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  z-index: 999;
  box-shadow: var(--shadow);
}
.skip-link:focus{ left: 12px; }

/* =========================
    LAYOUT
    ========================= */
.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px;
}

/* =========================
    STICKY HEADER + NAV
    ========================= */
header{
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}
.nav{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
}
.brand{
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 170px;
}
.brand-mark{
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(37,99,235,0.95), rgba(124,58,237,0.85));
  box-shadow: 0 10px 25px rgba(37,99,235,0.10);
  flex: 0 0 auto;
}
.brand strong{
  display: block;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
}
.brand span{
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 1px;
  white-space: nowrap;
}

.nav-links{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

nav a{
  color: var(--muted);
  text-decoration: none;
  padding: 9px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
  font-size: 0.92rem;
}
nav a:hover{
  color: var(--text);
  border-color: var(--border);
  background: var(--surface-2);
}
nav a[aria-current="true"]{
  color: var(--text);
  border-color: rgba(37,99,235,0.35);
  background: rgba(37,99,235,0.08);
}
:root[data-theme="dark"] nav a[aria-current="true"]{
  border-color: rgba(96,165,250,0.45);
  background: rgba(96,165,250,0.10);
}

/* Toggle button (TEXT: Light/Dark) */
.theme-toggle{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
  font-size: 0.92rem;
  line-height: 1;
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.theme-toggle:hover{ background: var(--surface-3); }
.theme-toggle:active{ transform: translateY(1px); }
.theme-toggle:focus{
  outline: 2px solid rgba(37,99,235,0.35);
  outline-offset: 2px;
}
:root[data-theme="dark"] .theme-toggle:focus{
  outline: 2px solid rgba(96,165,250,0.35);
}

/* =========================
    SECTIONS
    ========================= */
section{ padding: 46px 0; }

.section-title{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}
h2{
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: 0.2px;
}
.section-hint{
  color: var(--muted-2);
  font-size: 0.92rem;
}

.section-hint a{
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(37,99,235,0.35);
  text-underline-offset: 3px;
}

.section-hint a:hover{
  color: var(--text);
  text-decoration-color: var(--accent);
}

/* =========================
    HERO
    ========================= */
.hero{ padding: 34px 0 18px; }
.hero-grid{
  display: grid;
  grid-template-columns: 1fr 0fr;
  gap: 0px;
  align-items: stretch;
}

.card{
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-main{
  padding: 22px 18px;
  position: relative;
  overflow: hidden;
}
.hero-main:before{
  content: "";
  position: absolute;
  inset: -1px;
  background:
    radial-gradient(900px 160px at 10% 0%, rgba(37,99,235,0.10), transparent 60%),
    radial-gradient(700px 150px at 90% 30%, rgba(124,58,237,0.08), transparent 60%);
  pointer-events: none;
}
:root[data-theme="dark"] .hero-main:before{
  background:
    radial-gradient(900px 160px at 10% 0%, rgba(96,165,250,0.18), transparent 60%),
    radial-gradient(700px 150px at 90% 30%, rgba(167,139,250,0.14), transparent 60%);
}
.hero-main > *{ position: relative; }

.kicker{
  font-family: var(--mono);
  color: rgba(37,99,235,0.95);
  font-size: 0.88rem;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin: 0 0 10px;
}
:root[data-theme="dark"] .kicker{
  color: rgba(96,165,250,0.95);
}

h1{
  margin: 0 0 8px;
  font-size: 1.9rem;
  letter-spacing: 0.2px;
  line-height: 1.2;
}
.subhead{
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 1.02rem;
  /* max-width: 70ch; */
}

.pill-row{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.pill{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.9rem;
  color: var(--muted);
}
.dot{
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
}
:root[data-theme="dark"] .dot{
  box-shadow: 0 0 0 4px rgba(96,165,250,0.10);
}

.hero-side{
  padding: 18px;
  display: grid;
  gap: 10px;
  align-content: start;
}
.mini{
  border: 1px solid var(--border);
  background: var(--surface-3);
  border-radius: 12px;
  padding: 12px;
}
.mini strong{
  display: block;
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.mini span{
  color: var(--muted);
  font-size: 0.9rem;
}

/* Quick skim blocks */
.grid-3{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 14px;
}
.skim{ padding: 14px; }
.skim h3{ margin: 0 0 6px; font-size: 1.0rem; }
.skim p{ margin: 0; color: var(--muted); font-size: 0.95rem; }

/* =========================
    ABOUT
    ========================= */
.about-grid{
  display: grid;
  grid-template-columns: 1fr 0fr;
  gap: 0px;
  margin-top: 10px;
}
.stack{ padding: 16px; }
.stack h3{ margin: 0 0 8px; font-size: 1.05rem; }

.item{
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  background: var(--surface-3);
  border-radius: 12px;
  margin-top: 10px;
}
.logo-badge{
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.6px;
  color: rgba(15,23,42,0.92);
  border: 1px solid rgba(15,23,42,0.12);
  background: linear-gradient(135deg, rgba(37,99,235,0.14), rgba(124,58,237,0.12));
}
:root[data-theme="dark"] .logo-badge{
  color: rgba(255,255,255,0.92);
  border: 1px solid rgba(255,255,255,0.14);
  background: linear-gradient(135deg, rgba(96,165,250,0.35), rgba(167,139,250,0.25));
}
.item strong{ display: block; font-size: 0.98rem; margin-bottom: 2px; }
.item .meta{ color: var(--muted); font-size: 0.92rem; }
.item ul{ margin: 8px 0 0 18px; padding: 0; color: var(--muted); font-size: 0.92rem; }

/* =========================
    PROJECTS
    ========================= */
.projects{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 10px;
}
.project{
  padding: 16px;
  min-height: 160px;
  position: relative;
  overflow: hidden;
}
.project:after{
  content: "";
  position: absolute;
  inset: auto -40px -60px auto;
  width: 220px;
  height: 220px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, rgba(37,99,235,0.10), transparent 60%);
  transform: rotate(12deg);
  pointer-events: none;
}
:root[data-theme="dark"] .project:after{
  background: radial-gradient(circle at 30% 30%, rgba(96,165,250,0.20), transparent 60%);
}
.project > *{ position: relative; }
.project h3{ margin: 0 0 6px; font-size: 1.1rem; }
.project p{ margin: 0 0 12px; color: var(--muted); }

.tags{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.tag{
  font-size: 0.82rem;
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--surface-3);
}

/* =========================
    CONTACT
    ========================= */
.contact{
  padding: 16px;
  display: grid;
  grid-template-columns: 0.75fr 0.25fr;
  gap: 14px;
  align-items: start;
}
.contact h3{ margin: 0 0 6px; font-size: 1.05rem; }
.contact p{ margin: 0; color: var(--muted); }
.contact-box{
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-3);
}
.kv{
  display: grid;
  gap: 10px;
  margin-top: 10px;
  font-size: 0.95rem;
}
.kv div{ display: grid; gap: 2px; }
.kv span{
  color: var(--muted-2);
  font-size: 0.82rem;
  letter-spacing: 0.2px;
  text-transform: uppercase;
}
.kv strong{
  font-weight: 600;
  color: var(--text);
  word-break: break-word;
}

/* =========================
    FOOTER
    ========================= */
footer{
  padding: 26px 0 38px;
  color: var(--muted-2);
  font-size: 0.9rem;
}
.foot{
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.mono{ font-family: var(--mono); }

/* =========================
    RESPONSIVE
    ========================= */
@media (max-width: 880px){
  .hero-grid{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
  .about-grid{ grid-template-columns: 1fr; }
  .projects{ grid-template-columns: 1fr; }
  .contact{ grid-template-columns: 1fr; }
  .brand span{ display: none; }
}

/* =========================
    PRINT
    ========================= */
@media print{
  header{ position: static; background: #fff; color: #000; }
  body{ background: #fff; color: #000; }
  .card, .mini, .item, .project, .contact-box{ box-shadow: none; background: #fff; }
  nav{ display: none; }
}