/* =========================================================
   Premium Resume — Editorial Spine
   - Mobile-first
   - Intentional light/dark
   - Minimal JS, high polish
   ========================================================= */

:root {
  /* Type */
  --font-serif: "Newsreader", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-md: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: clamp(1.75rem, 2.8vw, 2.25rem);
  --text-3xl: clamp(2.25rem, 5vw, 3.25rem);

  --leading-tight: 1.06;
  --leading-base: 1.6;

  /* Layout */
  --container: 1120px;
  --gutter: clamp(1rem, 4vw, 2rem);
  --spine: 12.5rem;

  /* Shape */
  --radius: 16px;
  --radius-sm: 12px;
  --border: 1px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 140ms;
  --t-base: 220ms;

  /* Light */
  --bg: #f6f1e8;
  --bg-2: #fbf8f2;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-2: rgba(255, 255, 255, 0.62);
  --ink: #0f1115;
  --muted: rgba(15, 17, 21, 0.72);
  --faint: rgba(15, 17, 21, 0.52);
  --line: rgba(15, 17, 21, 0.14);
  --shadow: 0 16px 44px rgba(15, 17, 21, 0.10);

  --accent: #2e5bff;
  --accent-ink: #0a2bbf;
  --focus: #2e5bff;

  color-scheme: light dark;
}

html[data-theme="dark"] {
  --bg: #0b0d12;
  --bg-2: #0a0c11;
  --surface: rgba(18, 22, 34, 0.84);
  --surface-2: rgba(18, 22, 34, 0.64);
  --ink: #f2f3f6;
  --muted: rgba(242, 243, 246, 0.78);
  --faint: rgba(242, 243, 246, 0.56);
  --line: rgba(242, 243, 246, 0.14);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.46);

  --accent: #7aa2ff;
  --accent-ink: #c9d7ff;
  --focus: #7aa2ff;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: var(--leading-base);
  color: var(--ink);
  background:
    radial-gradient(900px 560px at 15% 8%, rgba(46, 91, 255, 0.10), transparent 60%),
    radial-gradient(860px 520px at 88% 18%, rgba(15, 17, 21, 0.06), transparent 58%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  min-height: 100svh;
}

img, svg { max-width: 100%; height: auto; }

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
  text-decoration-color: rgba(0,0,0,0.22);
}

html[data-theme="dark"] a {
  text-decoration-color: rgba(255,255,255,0.22);
}

a:hover { text-decoration-color: currentColor; }

::selection { background: rgba(46, 91, 255, 0.22); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

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

/* Accessibility */
.skip-link {
  position: absolute;
  left: 50%;
  top: 0.75rem;
  transform: translate(-50%, -200%);
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  border: var(--border) solid var(--line);
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  font-weight: 650;
  z-index: 1000;
}

html[data-theme="dark"] .skip-link { background: rgba(18,22,34,0.92); }

.skip-link:focus { transform: translate(-50%, 0); }

.sr-live {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: color-mix(in oklab, var(--bg) 66%, transparent);
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "brand actions"
    "nav nav";
  align-items: center;
  gap: 0.65rem 0.9rem;
}

@media (min-width: 860px) {
  .header-inner {
    grid-template-columns: 1fr auto auto;
    grid-template-areas: "brand nav actions";
    gap: 0.9rem;
  }
}
.brand {
  grid-area: brand;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: 0.02em;
}

.brand-name {
  font-weight: 760;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.80rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 42vw;
}

.site-nav {
  grid-area: nav;
  display: flex;
  gap: 0.85rem;
  align-items: center;
  overflow-x: auto;
  padding: 0.15rem 0 0.35rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.site-nav::-webkit-scrollbar { display: none; }

@media (min-width: 860px) {
  .site-nav {
    overflow: visible;
    padding: 0;
    -webkit-mask-image: none;
    mask-image: none;
  }
}
.nav-link {
  white-space: nowrap;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
  position: relative;
  padding: 0.35rem 0;
}

.nav-link:hover { color: var(--ink); }

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.30rem;
  height: 2px;
  width: 0;
  background: currentColor;
  transition: width var(--t-base) var(--ease-out);
}

.nav-link:hover::after { width: 100%; }

.nav-link[aria-current="true"] {
  color: var(--ink);
}

.nav-link[aria-current="true"]::after {
  width: 100%;
}

.header-actions {
  grid-area: actions;
  justify-self: end;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit;
  color: var(--ink);
  transition: transform var(--t-fast) var(--ease-out), background var(--t-fast) var(--ease-out);
}

.icon-btn:hover { transform: translateY(-1px); }

.icon-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), color-mix(in oklab, var(--accent) 62%, var(--ink)));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 18%, transparent);
}

.icon-btn-text {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Main layout */
#main { padding: 2.25rem 0 3.5rem; }

.noscript {
  margin-top: 2rem;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}

/* Section framing */
.section {
  margin-top: 3.25rem;
}

.section:first-child { margin-top: 0; }

.section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

@media (min-width: 960px) {
  .section-grid {
    grid-template-columns: var(--spine) minmax(0, 1fr);
    gap: 1.5rem;
  }
}

.section-label {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  color: var(--muted);
}

.section-label::before {
  content: "";
  width: 2px;
  height: 0.95em;
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent) 66%, var(--ink));
  opacity: 0.75;
}

.section-title {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
}

.section-kicker {
  margin: 0.5rem 0 0;
  font-size: var(--text-sm);
  color: var(--faint);
  max-width: 60ch;
}

/* Hero */
.hero {
  margin-top: 0.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 2rem;
    align-items: start;
  }
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}

.hero-title em {
  font-style: normal;
  color: color-mix(in oklab, var(--accent) 72%, var(--ink));
}

.hero-subtitle {
  margin: 0.85rem 0 0;
  font-size: var(--text-lg);
  color: var(--muted);
  max-width: 62ch;
}

.hero-prose {
  margin-top: 1.2rem;
  display: grid;
  gap: 0.75rem;
  max-width: 70ch;
}

.hero-prose p { margin: 0; }

.hero-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
  box-shadow: var(--shadow);
}

.hero-meta {
  display: grid;
  gap: 0.7rem;
}

.meta-row {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 0.75rem;
  align-items: baseline;
}

.meta-label {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}

.meta-value {
  color: var(--ink);
  font-weight: 600;
}

.cta-row {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  text-decoration: none;
  font: inherit;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform var(--t-fast) var(--ease-out), border-color var(--t-base) var(--ease-out), background var(--t-base) var(--ease-out);
}

.btn:hover { transform: translateY(-1px); border-color: color-mix(in oklab, var(--line) 40%, var(--accent)); }

.btn-primary {
  border-color: color-mix(in oklab, var(--accent) 42%, var(--line));
  background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 12%, var(--surface)), var(--surface));
}

.btn-quiet {
  background: transparent;
  box-shadow: none;
}

.btn-quiet:hover {
  background: var(--surface-2);
}

.toast {
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--muted);
  margin-top: 0.6rem;
}

/* Impact */
.chips {
  list-style: none;
  padding: 0;
  margin: 1.1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chip {
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: var(--text-sm);
}

/* Experience */
.roles {
  display: grid;
  gap: 0.75rem;
}

.role {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: clip;
}

.role summary {
  list-style: none;
  cursor: pointer;
  padding: 0.95rem 1.05rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
}

.role summary::-webkit-details-marker { display: none; }

@media (min-width: 720px) {
  .role summary {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 1rem;
  }
}

.role-title {
  font-weight: 760;
  letter-spacing: -0.01em;
}

.role-company {
  color: var(--muted);
  font-weight: 650;
}

.role-dates {
  font-family: var(--font-serif);
  color: var(--faint);
}

.role-subtitle {
  margin: -0.15rem 0 0.15rem;
  padding: 0 1.05rem;
  color: var(--faint);
  font-size: var(--text-sm);
}

.role-body {
  padding: 0.35rem 1.05rem 1.05rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.95rem;
}

.role-h {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.role-p { margin: 0.35rem 0 0; color: var(--muted); max-width: 72ch; }

.role-bullets {
  margin: 0.45rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.role-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 980px) {
  .role-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

.note {
  margin: 1rem 0 0;
  color: var(--faint);
  font-size: var(--text-sm);
  max-width: 74ch;
}

/* Projects */
.cards {
  display: grid;
  gap: 0.9rem;
}

@media (min-width: 880px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 1rem 1.05rem;
  display: grid;
  gap: 0.65rem;
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
}

.card-meta {
  margin: 0;
  color: var(--faint);
  font-size: var(--text-sm);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.card-body { margin: 0; color: var(--muted); }

.card-bullets {
  margin: 0.25rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

/* Skills */
.skill-grid {
  display: grid;
  gap: 0.9rem;
}

@media (min-width: 880px) {
  .skill-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.skill {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.05rem;
}

.skill-title {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

/* Contact */
.contact-card {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.05rem;
}

.contact-row {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 0.75rem;
  align-items: baseline;
}

.contact-link {
  color: var(--ink);
  font-weight: 650;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 0 2rem;
}

.footer-inner {
  display: grid;
  gap: 0.35rem;
  color: var(--faint);
  font-size: var(--text-sm);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out);
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}