/* ==========================================================================
   Executive Kinetic — design system for vipinsingh.me
   Montserrat headlines / Inter body · Royal Blue + High-Energy Orange
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Brand */
  --primary:            #00113a;
  --primary-container:  #002366;
  --primary-hover:      #0a3186;
  --on-primary:         #ffffff;
  --accent:             #ff5722;
  --accent-strong:      #ff8c00;
  --accent-ink:         #b23c12;

  /* Surfaces */
  --background:         #f8f9ff;
  --surface:            #ffffff;
  --surface-low:        #eff4ff;
  --surface-container:  #e5eeff;
  --surface-dim:        #cbdbf5;

  /* Ink */
  --on-background:      #0b1c30;
  --on-surface:         #0b1c30;
  --on-surface-variant: #444650;
  --muted:              #64748b;

  /* Lines */
  --outline:            #e2e8f0;
  --outline-strong:     #c5c6d2;

  /* Depth — sharp, royal-blue tinted */
  --shadow-sm: 0 1px 2px rgba(0,35,102,.06);
  --shadow:    0 4px 6px -1px rgba(0,35,102,.08), 0 2px 4px -1px rgba(0,35,102,.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,35,102,.10), 0 4px 6px -2px rgba(0,35,102,.05);

  /* Shape — "near sharp" */
  --r-sm: .125rem;
  --r:    .25rem;
  --r-lg: .5rem;
  --r-xl: .75rem;

  /* Rhythm — 8px baseline */
  --gutter: 24px;
  --container: 1280px;
  --section-gap: 64px;
  --margin-x: 20px;
}

@media (min-width: 768px) {
  :root { --section-gap: 120px; --margin-x: 80px; }
}

html[data-theme="dark"] {
  --primary:            #b3c5ff;
  --primary-container:  #2a4386;
  --primary-hover:      #3a55a0;
  --on-primary:         #ffffff;

  --background:         #0a1220;
  --surface:            #101a2c;
  --surface-low:        #16223a;
  --surface-container:  #1c2b47;
  --surface-dim:        #0a1220;

  --on-background:      #eaf1ff;
  --on-surface:         #eaf1ff;
  --on-surface-variant: #b6c2d6;
  --muted:              #94a3b8;

  --outline:            #24334f;
  --outline-strong:     #35476a;
  --accent-ink:         #ff8a5c;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow:    0 4px 6px -1px rgba(0,0,0,.45), 0 2px 4px -1px rgba(0,0,0,.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.5), 0 4px 6px -2px rgba(0,0,0,.35);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 96px; }
body {
  background: var(--background);
  color: var(--on-background);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: var(--r); }

/* ---------- Type scale ---------- */
h1, h2, h3, h4 {
  font-family: Montserrat, Inter, sans-serif;
  color: var(--primary);
  text-wrap: balance;
}
html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4 { color: var(--on-surface); }

.display {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
}
.headline   { font-size: clamp(1.75rem, 3.4vw, 2rem); font-weight: 600; line-height: 1.3; }
.headline-sm{ font-size: 1.5rem; font-weight: 600; line-height: 1.4; }
.lead       { font-size: 1.125rem; line-height: 1.6; color: var(--on-surface-variant); }
.kicker {
  font-size: .75rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent-ink);
  display: block;
}
.muted { color: var(--on-surface-variant); }

/* ---------- Layout ---------- */
.wrap {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--margin-x);
}
.wrap-narrow { max-width: 760px; margin-inline: auto; padding-inline: var(--margin-x); }
.section { padding-block: var(--section-gap); }
.section--tint { background: var(--surface); }
.section-head { margin-bottom: 56px; }
.section-head .headline { margin-block: 8px 12px; }
.grid { display: grid; gap: var(--gutter); }
.stack > * + * { margin-top: 24px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s, color .2s, transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--primary-container); color: #fff; }
.btn--primary:hover { background: var(--primary-hover); box-shadow: var(--shadow); }
.btn--cta { background: var(--accent); color: #fff; }
.btn--cta:hover { background: #e64a19; box-shadow: var(--shadow-lg); }
.btn--ghost {
  background: transparent;
  color: var(--primary-container);
  border-color: var(--outline-strong);
}
.btn--ghost:hover { background: var(--surface-low); }
html[data-theme="dark"] .btn--ghost { color: var(--on-surface); }
.btn .i { width: 18px; height: 18px; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--r-lg);
  transition: box-shadow .3s, transform .3s, border-color .3s;
}
.card--hover:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  background: color-mix(in srgb, var(--background) 82%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--outline);
}
.nav__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--margin-x);
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__brand {
  font-family: Montserrat, sans-serif;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -.01em;
  color: var(--primary);
  text-decoration: none;
  white-space: nowrap;
}
html[data-theme="dark"] .nav__brand { color: var(--on-surface); }
.nav__links { display: none; gap: 32px; align-items: center; }
.nav__links a {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav__links a:hover { color: var(--primary-container); }
.nav__links a.is-active { color: var(--primary); border-bottom-color: var(--accent); }
html[data-theme="dark"] .nav__links a:hover,
html[data-theme="dark"] .nav__links a.is-active { color: var(--on-surface); }
.nav__actions { display: flex; align-items: center; gap: 12px; }
.nav__cta { display: none; }

.icon-btn {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--outline);
  border-radius: var(--r);
  cursor: pointer;
  color: var(--on-surface-variant);
  transition: background-color .2s, color .2s;
}
.icon-btn:hover { background: var(--surface-low); color: var(--primary-container); }

.nav__panel {
  display: none;
  border-top: 1px solid var(--outline);
  background: var(--background);
  padding: 16px var(--margin-x) 24px;
}
.nav__panel.is-open { display: block; }
.nav__panel a {
  display: block;
  padding: 14px 0;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid var(--outline);
  color: var(--on-surface-variant);
}
.nav__panel .btn { width: 100%; margin-top: 20px; }

@media (min-width: 900px) {
  .nav__links { display: flex; }
  .nav__cta { display: inline-flex; }
  .nav__toggle { display: none; }
}

/* ---------- Hero ---------- */
.hero { padding-top: calc(76px + var(--section-gap)); padding-bottom: var(--section-gap); }
.hero__grid { grid-template-columns: 1fr; align-items: center; gap: 48px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
.hero .lead { max-width: 34rem; margin-top: 24px; }

.portrait {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--outline);
  aspect-ratio: 4 / 5;
  background: linear-gradient(160deg, #003a9e, #00113a);
}
.portrait img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 18%;
}
.portrait__fallback {
  position: absolute; inset: 0;
  display: grid; place-content: center; gap: 12px;
  text-align: center; color: rgba(255,255,255,.85); padding: 32px;
}
.portrait__initials {
  font-family: Montserrat, sans-serif;
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  letter-spacing: -.04em;
  color: #fff;
  line-height: 1;
}
.portrait__badge {
  position: absolute;
  z-index: 2;
  left: 24px; bottom: 24px; right: 24px;
  background: rgba(255,255,255,.94);
  border-radius: var(--r);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
html[data-theme="dark"] .portrait__badge { background: rgba(16,26,44,.94); }
.portrait__badge strong { display: block; font-family: Montserrat, sans-serif; color: var(--primary-container); }
html[data-theme="dark"] .portrait__badge strong { color: var(--on-surface); }
.portrait__badge span { font-size: .8125rem; color: var(--on-surface-variant); }

@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.05fr .95fr; gap: 64px; }
}

/* ---------- Stat strip ---------- */
.stats { grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--outline); border: 1px solid var(--outline); border-radius: var(--r-lg); overflow: hidden; }
.stat { background: var(--surface); padding: 28px 24px; }
.stat__num {
  font-family: Montserrat, sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--accent);
  line-height: 1.1;
}
.stat__label {
  margin-top: 6px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
@media (min-width: 768px) { .stats { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Timeline ---------- */
.timeline { border-left: 2px solid var(--outline); padding-left: 28px; display: grid; gap: 40px; }
.tl { position: relative; }
.tl::before {
  content: "";
  position: absolute;
  left: -35px; top: 6px;
  width: 12px; height: 12px;
  background: var(--accent);
  border: 2px solid var(--background);
  border-radius: 999px;
}
.tl__year {
  font-family: Montserrat, sans-serif;
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--accent-ink);
}
.tl h3 { margin: 4px 0 8px; font-size: 1.25rem; }

/* ---------- Bento ---------- */
.bento { grid-template-columns: 1fr; }
@media (min-width: 900px) { .bento { grid-template-columns: repeat(3, 1fr); } }
.tile { padding: 32px; display: flex; flex-direction: column; align-items: flex-start; }
.tile h3 { margin: 24px 0 12px; font-size: 1.375rem; }
.tile p { color: var(--on-surface-variant); }
.tile__icon {
  width: 48px; height: 48px;
  display: grid; place-content: center;
  border-radius: var(--r);
  background: color-mix(in srgb, var(--primary-container) 10%, transparent);
  color: var(--primary-container);
}
html[data-theme="dark"] .tile__icon { color: var(--primary); }
.tile--feature {
  background: var(--primary-container);
  border-color: transparent;
  box-shadow: var(--shadow);
}
.tile--feature h3, .tile--feature p { color: #fff; }
.tile--feature p { color: rgba(255,255,255,.82); }
.tile--feature .tile__icon { background: rgba(255,255,255,.16); color: #fff; }
.meter { width: 100%; height: 4px; margin-top: 28px; background: rgba(255,255,255,.2); border-radius: 999px; overflow: hidden; }
.meter > i { display: block; height: 100%; width: 92%; background: var(--accent-strong); }
.tile--feature .meter-label {
  margin-top: 10px; font-size: .75rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; color: #fff;
}

/* ---------- Ventures ---------- */
.ventures { grid-template-columns: 1fr; }
@media (min-width: 860px) { .ventures { grid-template-columns: repeat(2, 1fr); } }

.venture { padding: 32px; display: flex; flex-direction: column; gap: 20px; }
@media (min-width: 768px) { .venture { padding: 40px; } }

.venture__head { display: flex; align-items: center; gap: 16px; }
.venture__head h3 { font-size: 1.5rem; line-height: 1.2; }
.venture__role {
  display: block;
  margin-top: 4px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.venture__mark {
  flex: none;
  width: 56px; height: 56px;
  display: grid; place-content: center;
  border-radius: var(--r-lg);
  font-family: Montserrat, sans-serif;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: #fff;
}
.venture__mark[data-brand="genx"] { background: linear-gradient(140deg, #003a9e, #00113a); }
.venture__mark[data-brand="nivi"] { background: linear-gradient(140deg, #ff8c00, #e64a19); }

.venture > p { color: var(--on-surface-variant); }

.venture__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 4px 0 0;
  background: var(--outline);
  border: 1px solid var(--outline);
  border-radius: var(--r);
  overflow: hidden;
}
.venture__stats > div { background: var(--surface); padding: 16px 12px; }
.venture__stats dt {
  font-family: Montserrat, sans-serif;
  /* Three cells share a card, so the number has to survive a ~100px column. */
  font-size: clamp(1rem, 4vw, 1.25rem);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--accent);
  line-height: 1.1;
  white-space: nowrap;
}
.venture__stats dd {
  margin: 4px 0 0;
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
.venture__cta { align-self: flex-start; margin-top: auto; text-transform: none; letter-spacing: 0; }
.venture__cta .i { width: 16px; height: 16px; }

/* ---------- Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 7px 12px;
  border-radius: var(--r);
  background: var(--surface-container);
  color: var(--primary-container);
  border: 1px solid var(--outline);
}
html[data-theme="dark"] .chip { color: var(--on-surface); }
.chip--solid { background: var(--primary-container); color: #fff; border-color: transparent; }

/* ---------- Contact / vCard ---------- */
.contact-card { display: grid; grid-template-columns: 1fr; overflow: hidden; box-shadow: var(--shadow); }
@media (min-width: 900px) { .contact-card { grid-template-columns: 1.35fr .65fr; } }
.contact-card__main { padding: 40px; }
@media (min-width: 768px) { .contact-card__main { padding: 48px; } }
.contact-list { display: grid; gap: 4px; margin: 32px 0; }
.contact-row {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--outline);
}
.contact-row:last-child { border-bottom: 0; }
.contact-row .i { color: var(--muted); flex: none; }
.contact-row a { color: var(--primary-container); text-decoration: none; word-break: break-word; }
.contact-row a:hover { text-decoration: underline; }
html[data-theme="dark"] .contact-row a { color: var(--primary); }
.contact-row small { display: block; font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

.contact-card__qr {
  background: var(--surface-low);
  border-top: 1px solid var(--outline);
  padding: 40px 32px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
  text-align: center;
}
@media (min-width: 900px) {
  .contact-card__qr { border-top: 0; border-left: 1px solid var(--outline); }
}
.qr-frame {
  background: #fff;
  padding: 14px;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--outline);
  line-height: 0;
}
.qr-frame { width: max-content; }
.qr-frame > * { display: block; width: 220px; height: 220px; max-width: none; }
.qr-caption { font-size: .75rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--on-surface-variant); }

.actions-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Socials ---------- */
.social-grid { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 700px) { .social-grid { grid-template-columns: repeat(4, 1fr); } }
.social {
  display: flex; align-items: center; gap: 14px;
  padding: 20px;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--r-lg);
  transition: box-shadow .25s, transform .25s, border-color .25s;
}
.social:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: var(--outline-strong); }
.social .i { color: var(--primary-container); flex: none; }
html[data-theme="dark"] .social .i { color: var(--primary); }
.social b { display: block; font-family: Montserrat, sans-serif; font-size: .9375rem; color: var(--on-surface); }
.social span { font-size: .8125rem; color: var(--muted); }

/* ---------- Blog ---------- */
.posts { grid-template-columns: 1fr; }
@media (min-width: 700px) { .posts { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .posts { grid-template-columns: repeat(3, 1fr); } }
.post { display: flex; flex-direction: column; overflow: hidden; text-decoration: none; height: 100%; }
.post__media {
  height: 176px;
  background: linear-gradient(135deg, var(--primary-container), var(--primary));
  position: relative;
  overflow: hidden;
  display: grid; place-content: center;
}
.post__media[data-tone="a"] { background: linear-gradient(135deg, #002366, #0a3186); }
.post__media[data-tone="b"] { background: linear-gradient(135deg, #1f2937, #ff5722); }
.post__media[data-tone="c"] { background: linear-gradient(135deg, #04361f, #0f766e); }
.post__media[data-tone="d"] { background: linear-gradient(135deg, #3b0764, #6d28d9); }
.post__media[data-tone="e"] { background: linear-gradient(135deg, #7c2d12, #ff8c00); }
.post__media svg { color: rgba(255,255,255,.85); transition: transform .5s; }
.post:hover .post__media svg { transform: scale(1.12); }
.post__body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.post__body h3 { font-size: 1.25rem; margin: 12px 0; }
.post__body p { color: var(--on-surface-variant); font-size: .9375rem; flex: 1; }
.post__meta { margin-top: 20px; display: flex; align-items: center; gap: 8px; font-size: .75rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--primary-container); }
html[data-theme="dark"] .post__meta { color: var(--primary); }
.post__date { font-size: .8125rem; color: var(--muted); letter-spacing: 0; text-transform: none; font-weight: 400; margin-left: auto; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; }
.filter {
  padding: 9px 16px;
  border: 1px solid var(--outline);
  border-radius: var(--r);
  background: var(--surface);
  font-size: .75rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: background-color .2s, color .2s, border-color .2s;
}
.filter:hover { border-color: var(--outline-strong); }
.filter.is-active { background: var(--primary-container); color: #fff; border-color: transparent; }

/* ---------- Article ---------- */
.article { padding-top: calc(76px + 56px); }
.article__head { padding-bottom: 40px; border-bottom: 1px solid var(--outline); margin-bottom: 40px; }
.article__head h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; line-height: 1.15; letter-spacing: -.02em; margin: 12px 0 16px; }
.article__meta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-size: .875rem; color: var(--muted); }
.prose { font-size: 1.0625rem; line-height: 1.75; color: var(--on-surface-variant); }
.prose > * + * { margin-top: 24px; }
.prose h2 { font-size: 1.625rem; margin-top: 48px; }
.prose h3 { font-size: 1.25rem; margin-top: 32px; }
.prose ul, .prose ol { padding-left: 22px; display: grid; gap: 10px; }
.prose strong { color: var(--on-surface); }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 24px;
  font-size: 1.125rem;
  color: var(--on-surface);
}
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .875em;
  background: var(--surface-container);
  padding: 2px 6px;
  border-radius: var(--r-sm);
}

/* ---------- Footer ---------- */
.footer { background: var(--primary); color: rgba(255,255,255,.72); padding-block: 64px 40px; margin-top: var(--section-gap); }
html[data-theme="dark"] .footer { background: var(--surface); border-top: 1px solid var(--outline); }
.footer a { color: rgba(255,255,255,.72); text-decoration: none; }
html[data-theme="dark"] .footer a, html[data-theme="dark"] .footer { color: var(--on-surface-variant); }
.footer a:hover { color: var(--accent-strong); }
.footer__top { display: grid; gap: 40px; grid-template-columns: 1fr; }
@media (min-width: 800px) { .footer__top { grid-template-columns: 2fr 1fr 1fr; } }
.footer__brand { font-family: Montserrat, sans-serif; font-size: 1.5rem; font-weight: 700; color: #fff; }
html[data-theme="dark"] .footer__brand { color: var(--on-surface); }
.footer h4 { color: #fff; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 16px; }
html[data-theme="dark"] .footer h4 { color: var(--on-surface); }
.footer ul { list-style: none; padding: 0; display: grid; gap: 10px; font-size: .9375rem; }
.footer__bottom {
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.14);
  display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between;
  font-size: .8125rem;
}
html[data-theme="dark"] .footer__bottom { border-top-color: var(--outline); }
.footer__social { display: flex; gap: 8px; }
.footer__social a {
  width: 40px; height: 40px;
  display: grid; place-content: center;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r);
  transition: background-color .2s, border-color .2s, color .2s;
}
.footer__social a:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
html[data-theme="dark"] .footer__social a { border-color: var(--outline); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%; bottom: 28px;
  transform: translate(-50%, 140%);
  background: var(--primary);
  color: #fff;
  padding: 14px 22px;
  border-radius: var(--r);
  box-shadow: var(--shadow-lg);
  font-size: .875rem;
  z-index: 100;
  transition: transform .35s cubic-bezier(.16,1,.3,1);
}
.toast.is-visible { transform: translate(-50%, 0); }

/* ---------- Motion ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.16,1,.3,1); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 16px; top: -100px; z-index: 200;
  background: var(--accent); color: #fff; padding: 12px 20px; border-radius: var(--r);
  text-decoration: none; transition: top .2s;
}
.skip-link:focus { top: 16px; }