/* ==========================================================================
   Sai Akash Neela — portfolio stylesheet
   Single stylesheet, no build step. Mirrors the original Tailwind/zinc design.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --bg: #ffffff;
  --card: #ffffff;
  --heading: #18181b;
  --text: #09090b;
  --text-2: #52525b;
  --text-3: #71717a;
  --text-4: #a1a1aa;
  --text-strong: #3f3f46;
  --border: #e4e4e7;
  --border-hover: #d4d4d8;
  --border-strong: #a1a1aa;
  --divider: #f4f4f5;
  --chip-bg: #f4f4f5;
  --chip-bg-hover: #e4e4e7;
  --chip-border: #e4e4e7;
  --chip-fg: #27272a;
  --soft-bg: #fafafa;
  --banner-bg: #f4f4f5;
  --inv-bg: #18181b;
  --inv-bg-hover: #27272a;
  --inv-fg: #ffffff;
  --inv-border: #27272a;
  --badge-bg: rgba(0, 0, 0, 0.8);
  --badge-fg: #ffffff;
  --dot: #a1a1aa;
  --accent: #4f46e5;
  --success: #059669;
  --dock-bg: rgba(255, 255, 255, 0.9);
  --dock-border: rgba(228, 228, 231, 0.9);
  --dock-hover: #f4f4f5;
  --popover-bg: #ffffff;
  --ring: #18181b;
  --selection-bg: #27272a;
  --selection-fg: #ffffff;
  --hm-0: #f4f4f5;  --hm-0b: rgba(228, 228, 231, 0.5);
  --hm-1: #a7f3d0;  --hm-1b: #6ee7b7;
  --hm-2: #34d399;  --hm-2b: #10b981;
  --hm-3: #10b981;  --hm-3b: #059669;
  --hm-4: #059669;  --hm-4b: #047857;
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  --page-width: 42rem;
  --gutter: 1.25rem;

  color-scheme: light;
}

html.dark {
  --bg: #09090b;
  --card: #121215;
  --heading: #f4f4f5;
  --text: #fafafa;
  --text-2: #a1a1aa;
  --text-3: #a1a1aa;
  --text-4: #71717a;
  --text-strong: #d4d4d8;
  --border: #27272a;
  --border-hover: #3f3f46;
  --border-strong: #52525b;
  --divider: rgba(39, 39, 42, 0.8);
  --chip-bg: #27272a;
  --chip-bg-hover: #3f3f46;
  --chip-border: #3f3f46;
  --chip-fg: #e4e4e7;
  --soft-bg: #18181b;
  --banner-bg: rgba(39, 39, 42, 0.8);
  --inv-bg: #f4f4f5;
  --inv-bg-hover: #ffffff;
  --inv-fg: #18181b;
  --inv-border: #e4e4e7;
  --badge-bg: rgba(255, 255, 255, 0.9);
  --badge-fg: #000000;
  --dot: #52525b;
  --accent: #818cf8;
  --success: #34d399;
  --dock-bg: rgba(24, 24, 27, 0.9);
  --dock-border: #27272a;
  --dock-hover: #27272a;
  --popover-bg: #18181b;
  --ring: #d4d4d8;
  --selection-bg: #e4e4e7;
  --selection-fg: #000000;
  --hm-0: rgba(39, 39, 42, 0.8);  --hm-0b: rgba(63, 63, 70, 0.4);
  --hm-1: rgba(2, 44, 34, 0.7);   --hm-1b: #065f46;
  --hm-2: #047857;                --hm-2b: #059669;
  --hm-3: #10b981;                --hm-3b: #34d399;
  --hm-4: #34d399;                --hm-4b: #6ee7b7;

  color-scheme: dark;
}

/* ---------- Fluid scale for very large displays (27"+, 4K, ultrawide) ---------- */
@media (min-width: 1280px) { :root { --page-width: 46rem; } }
@media (min-width: 1600px) { :root { --page-width: 50rem; } }
@media (min-width: 1920px) { html { font-size: 17px; } }
@media (min-width: 2400px) { html { font-size: 19px; } }
@media (min-width: 3200px) { html { font-size: 23px; } }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; border: 0 solid; }

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1.5rem;
}

body {
  min-height: 100vh;
  overflow-x: clip;
  font-family: var(--font-sans);
  line-height: 1.5;
  background-color: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.2s, color 0.2s;
}

::selection { background: var(--selection-bg); color: var(--selection-fg); }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; cursor: pointer; }
ul { list-style: none; }
h1, h2, h3, h4 { font-size: inherit; font-weight: inherit; }

:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

.icon { width: 1em; height: 1em; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon--fill { fill: currentColor; stroke: 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: 1rem; top: -4rem; z-index: 100;
  padding: 0.5rem 1rem; border-radius: 0.5rem;
  background: var(--inv-bg); color: var(--inv-fg); font-size: 0.875rem; font-weight: 600;
  transition: top 0.15s;
}
.skip-link:focus { top: 1rem; }

/* ---------- Layout ---------- */
.page {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 3rem var(--gutter) 7rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
@media (min-width: 640px) {
  :root { --gutter: 1.5rem; }
  .page { padding-top: 6rem; gap: 3.5rem; }
}

.section { display: flex; flex-direction: column; gap: 1.25rem; }
.section-title { font-size: 1.25rem; line-height: 1.75rem; font-weight: 700; letter-spacing: -0.025em; color: var(--heading); }
.section-sub { font-size: 0.75rem; line-height: 1rem; color: var(--text-3); margin-top: 0.25rem; }
@media (min-width: 640px) { .section-sub { font-size: 0.875rem; line-height: 1.25rem; } }

.subhead {
  font-size: 0.6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-4);
}

.card {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--card);
  transition: border-color 0.15s;
}
.card--hover:hover { border-color: var(--border-hover); }

/* ---------- Hero ---------- */
.hero__row {
  display: flex; flex-direction: column-reverse; align-items: center;
  justify-content: space-between; gap: 1.5rem;
}
.hero__text { flex: 1; display: flex; flex-direction: column; gap: 0.75rem; text-align: center; min-width: 0; }
.hero__title {
  font-size: clamp(1.5rem, 6.4vw, 2.25rem);
  line-height: 1.15; font-weight: 700; letter-spacing: -0.05em; color: var(--heading);
  white-space: nowrap;
}
.hero__lead { font-size: 1rem; line-height: 1.625; color: var(--text-2); max-width: 600px; }
.hero__meta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 0.375rem 0.75rem; font-size: 0.75rem; color: var(--text-3);
}
.hero__meta span { display: inline-flex; align-items: center; gap: 0.3rem; }
.status-dot { width: 0.5rem; height: 0.5rem; border-radius: 9999px; background: #10b981; box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18); }
.avatar {
  width: 6rem; height: 6rem; border-radius: 9999px; overflow: hidden; flex-shrink: 0;
  border: 2px solid var(--border); background: var(--chip-bg);
  box-shadow: var(--shadow-lg), 0 0 0 4px var(--divider);
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 640px) {
  .hero__row { flex-direction: row; align-items: flex-start; gap: 2rem; }
  .hero__text { text-align: left; }
  .hero__lead { font-size: 1.125rem; line-height: 1.75rem; }
  .hero__meta { justify-content: flex-start; }
  .avatar { width: 7rem; height: 7rem; }
}
@media (min-width: 768px) { .hero__title { font-size: 2.6rem; } }
@media (min-width: 1280px) { .hero__title { font-size: 2.9rem; } }
@media (min-width: 1600px) { .hero__title { font-size: 3rem; } }

/* ---------- Links bar ---------- */
.links { display: flex; flex-direction: column; gap: 0.75rem; padding-top: 0.5rem; }
.links__row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.chip {
  display: inline-flex; align-items: center; gap: 0.375rem;
  padding: 0.375rem 0.75rem; border-radius: 0.5rem;
  font-size: 0.75rem; line-height: 1rem; font-weight: 600;
  background: var(--chip-bg); color: var(--chip-fg);
  border: 1px solid var(--chip-border); box-shadow: var(--shadow-xs);
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.chip:hover { background: var(--chip-bg-hover); }
.chip .icon { font-size: 0.875rem; }
.chip--primary { background: var(--inv-bg); color: var(--inv-fg); border-color: var(--inv-bg); }
.chip--primary:hover { background: var(--inv-bg-hover); }

.flagship { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; padding-top: 0.25rem; font-size: 0.75rem; }
.flagship__label { font-size: 0.6875rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-4); }
.flag-link {
  display: inline-flex; align-items: center; gap: 0.25rem;
  padding: 0.25rem 0.625rem; border-radius: 0.375rem;
  background: var(--soft-bg); color: var(--text-strong);
  border: 1px solid var(--border); transition: border-color 0.15s, color 0.15s;
}
.flag-link:hover { border-color: var(--border-strong); color: var(--heading); }
.flag-link strong { font-weight: 600; }
.flag-link small { font-size: 0.625rem; color: var(--text-4); }
.flag-link .icon { font-size: 0.6875rem; color: var(--text-4); }

/* ---------- About ---------- */
.prose { font-size: 0.875rem; line-height: 1.625; color: var(--text-2); display: flex; flex-direction: column; gap: 0.75rem; }
.prose a { color: var(--heading); font-weight: 500; text-decoration: underline; text-decoration-color: var(--border-strong); text-underline-offset: 2px; }
.prose a:hover { text-decoration-color: currentColor; }
@media (min-width: 640px) { .prose { font-size: 1rem; } }

/* ---------- GitHub activity ---------- */
.gh__head { display: flex; flex-direction: column; justify-content: space-between; gap: 0.5rem; }
@media (min-width: 640px) { .gh__head { flex-direction: row; align-items: center; } }
.gh__link {
  display: inline-flex; align-items: center; gap: 0.375rem; align-self: flex-start;
  padding: 0.25rem 0.75rem; border-radius: 0.5rem; font-size: 0.75rem; font-weight: 600;
  background: var(--chip-bg); color: var(--chip-fg); border: 1px solid var(--chip-border);
  transition: border-color 0.15s;
}
.gh__link:hover { border-color: var(--border-strong); }
.gh__link .ext { font-size: 0.6875rem; color: var(--text-4); }
@media (min-width: 640px) { .gh__link { align-self: auto; } }
.gh__box { padding: 1rem; box-shadow: var(--shadow-xs); position: relative; }
@media (min-width: 640px) { .gh__box { padding: 1.25rem; } }
.gh__scroll { width: 100%; overflow-x: auto; padding-bottom: 0.5rem; }
.gh__months { position: relative; display: flex; gap: 3px; height: 1rem; margin-bottom: 0.5rem; font-size: 0.625rem; font-weight: 500; color: var(--text-4); user-select: none; }
.gh__months > div { width: 12px; flex-shrink: 0; position: relative; overflow: visible; }
.gh__months span { position: absolute; left: 0; top: 0; white-space: nowrap; }
.gh__grid { display: flex; gap: 3px; min-height: 102px; }
.gh__week { display: flex; flex-direction: column; gap: 3px; }
.gh__cell {
  width: 12px; height: 12px; border-radius: 2px; flex-shrink: 0; padding: 0;
  border: 1px solid var(--hm-0b); background: var(--hm-0);
  transition: transform 75ms;
}
button.gh__cell:hover, button.gh__cell:focus-visible { transform: scale(1.25); }
.gh__cell--pad { background: transparent; border-color: transparent; }
.gh__cell[data-l="1"] { background: var(--hm-1); border-color: var(--hm-1b); }
.gh__cell[data-l="2"] { background: var(--hm-2); border-color: var(--hm-2b); }
.gh__cell[data-l="3"] { background: var(--hm-3); border-color: var(--hm-3b); }
.gh__cell[data-l="4"] { background: var(--hm-4); border-color: var(--hm-4b); }
.gh__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  margin-top: 0.75rem; padding-top: 0.5rem; border-top: 1px solid var(--divider);
  font-size: 0.6875rem; color: var(--text-3);
}
.gh__legend { display: flex; align-items: center; gap: 0.375rem; }
.gh__legend .gh__cell { width: 10px; height: 10px; }
.gh__legend > div { display: flex; gap: 2px; }
.only-desktop { display: none; }
@media (min-width: 640px) { .only-desktop { display: inline; } .only-mobile { display: none; } }
.tooltip {
  position: fixed; z-index: 60; pointer-events: none;
  padding: 0.375rem 0.75rem; border-radius: 0.5rem;
  background: var(--inv-bg); color: var(--inv-fg);
  font-size: 0.75rem; font-weight: 600; white-space: nowrap;
  box-shadow: var(--shadow-xl);
  transform: translate(-50%, calc(-100% - 8px));
}
.tooltip::after {
  content: ''; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 4px solid transparent; border-top-color: var(--inv-bg);
}
.tooltip[hidden] { display: none; }

/* ---------- Skills ---------- */
.skills { display: flex; flex-direction: column; gap: 1rem; }
.skills__group { display: flex; flex-direction: column; gap: 0.5rem; }
.skills__list { display: flex; flex-wrap: wrap; gap: 0.375rem; }
.skill {
  border: 1px solid var(--inv-border); border-radius: 0.5rem;
  background: var(--inv-bg); color: var(--inv-fg);
  padding: 0.25rem 0.75rem; font-size: 0.75rem; line-height: 1rem; font-weight: 500; letter-spacing: -0.025em;
  box-shadow: var(--shadow-xs); cursor: default; transition: opacity 0.15s;
}
.skill:hover { opacity: 0.9; }
@media (min-width: 640px) {
  .skills__list { gap: 0.5rem; }
  .skill { font-size: 0.875rem; line-height: 1.25rem; }
}

/* ---------- Work / FAQ (collapsible cards) ---------- */
.stack { display: flex; flex-direction: column; gap: 1rem; }
.stack--tight { gap: 0.75rem; }
.fold { padding: 1rem; }
@media (min-width: 640px) { .fold { padding: 1.25rem; } }
.fold > summary {
  list-style: none; display: flex; align-items: center; justify-content: space-between;
  gap: 0.5rem; cursor: pointer; text-align: left;
}
.fold > summary::-webkit-details-marker { display: none; }
.fold__main { display: flex; align-items: center; gap: 0.75rem; flex: 1; min-width: 0; padding-right: 0.5rem; }
@media (min-width: 640px) { .fold__main { gap: 1rem; } }
.logo {
  width: 2.25rem; height: 2.25rem; border-radius: 9999px; flex-shrink: 0; overflow: hidden;
  display: flex; align-items: center; justify-content: center; padding: 0.375rem;
  border: 1px solid var(--chip-border); background: #ffffff; box-shadow: var(--shadow-xs);
  color: var(--text-2);
}
html.dark .logo { background: #27272a; }
.logo img { width: 100%; height: 100%; object-fit: contain; border-radius: 9999px; }
.logo--muted { background: var(--chip-bg); }
@media (min-width: 640px) { .logo { width: 2.5rem; height: 2.5rem; } }
.fold__title { display: flex; align-items: center; gap: 0.375rem; font-weight: 600; font-size: 0.875rem; color: var(--heading); min-width: 0; }
.fold__title > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fold__sub { font-size: 0.75rem; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (min-width: 640px) { .fold__title { font-size: 1rem; } .fold__sub { font-size: 0.875rem; } }
.chev { font-size: 0.875rem; color: var(--text-4); transition: transform 0.15s; transform: rotate(-90deg); }
.fold[open] .chev { transform: rotate(0deg); }
.fold__period { font-size: 0.75rem; color: var(--text-3); text-align: right; flex-shrink: 0; font-variant-numeric: tabular-nums; }
.fold__body {
  margin-top: 1rem; padding-top: 0.75rem; border-top: 1px solid var(--divider);
  font-size: 0.75rem; line-height: 1.625; color: var(--text-2);
  display: flex; flex-direction: column; gap: 0.625rem;
}
@media (min-width: 640px) { .fold__body { font-size: 0.875rem; } }
.bullets { display: flex; flex-direction: column; gap: 0.375rem; padding-top: 0.25rem; }
.bullets li { display: flex; align-items: flex-start; gap: 0.5rem; }
.bullets li::before { content: ''; width: 0.375rem; height: 0.375rem; border-radius: 9999px; background: var(--dot); margin-top: 0.4rem; flex-shrink: 0; }
.tags { display: flex; flex-wrap: wrap; gap: 0.25rem; }
.tag {
  font-size: 0.625rem; font-weight: 500; line-height: 1rem;
  border: 1px solid var(--border); background: var(--soft-bg); color: var(--text-2);
  border-radius: 0.25rem; padding: 0.0625rem 0.375rem;
}
html.dark .tag { background: rgba(39, 39, 42, 0.6); color: #d4d4d8; }
.faq .fold__title > span { white-space: normal; }
.faq .fold__main { gap: 0; }

/* ---------- Section header (centered, with pill badge) ---------- */
.center-head { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.75rem; }
.pill {
  display: inline-block; border-radius: 0.75rem; padding: 0.25rem 1rem;
  font-size: 0.75rem; font-weight: 600; background: var(--inv-bg); color: var(--inv-fg);
  border: 1px solid var(--inv-border);
}
.big-title { font-size: 1.875rem; line-height: 2.25rem; font-weight: 700; letter-spacing: -0.05em; color: var(--heading); }
.center-head p { font-size: 0.875rem; line-height: 1.625; color: var(--text-3); max-width: 32rem; }
@media (min-width: 640px) {
  .big-title { font-size: 2.25rem; line-height: 2.5rem; }
  .center-head p { font-size: 1rem; }
}
.projects { gap: 2rem; }

/* ---------- Project cards ---------- */
.grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 640px) { .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.grid--compact { gap: 0.75rem; }

.project { display: flex; flex-direction: column; height: 100%; overflow: hidden; }
.project:hover { border-color: var(--border-strong); }
.project__banner {
  position: relative; flex-shrink: 0; height: 11rem; overflow: hidden;
  display: flex; align-items: center; justify-content: center; background: var(--banner-bg);
}
.project__mark { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; padding: 1.5rem; text-align: center; }
.project__icon {
  width: 3rem; height: 3rem; border-radius: 0.75rem; object-fit: contain; padding: 0.25rem;
  background: #ffffff; border: 1px solid rgba(228, 228, 231, 0.6); box-shadow: var(--shadow-xs);
}
html.dark .project__icon { background: #18181b; border-color: rgba(63, 63, 70, 0.6); }
.project__domain { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600; color: var(--text-3); }
.badge {
  position: absolute; top: 0.625rem; right: 0.625rem;
  padding: 0.125rem 0.5rem; border-radius: 9999px; font-size: 0.625rem; font-weight: 600;
  background: var(--badge-bg); color: var(--badge-fg);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.project__body { padding: 1.25rem; display: flex; flex-direction: column; justify-content: space-between; gap: 0.75rem; flex: 1; }
.project__title { display: flex; align-items: center; gap: 0.25rem; font-size: 1rem; font-weight: 700; color: var(--heading); }
.project__title a { color: var(--text-4); transition: color 0.15s; }
.project__title a:hover { color: var(--heading); }
.project__role { font-size: 0.6875rem; font-weight: 600; color: var(--text-3); margin-top: -0.25rem; }
.project__desc { font-size: 0.75rem; line-height: 1.625; color: var(--text-2); }
@media (min-width: 640px) { .project__desc { font-size: 0.875rem; } }
.project__foot { display: flex; flex-direction: column; gap: 0.75rem; padding-top: 0.5rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; padding-top: 0.25rem; }
.btn-sm {
  display: inline-flex; align-items: center; gap: 0.25rem;
  padding: 0.25rem 0.625rem; border-radius: 0.375rem; font-size: 0.6875rem; font-weight: 600;
  transition: opacity 0.15s, background-color 0.15s;
}
.btn-sm .icon { font-size: 0.6875rem; }
.btn-sm--dark { background: var(--inv-bg); color: var(--inv-fg); }
.btn-sm--dark:hover { opacity: 0.9; }
.btn-sm--light { background: var(--chip-bg); color: var(--chip-fg); border: 1px solid var(--chip-border); }
.btn-sm--light:hover { background: var(--chip-bg-hover); }

/* compact cards (client work / coming soon) */
.mini {
  display: flex; align-items: flex-start; gap: 0.75rem; padding: 0.875rem 1rem; height: 100%;
}
a.mini:hover { border-color: var(--border-strong); }
.mini__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.125rem; }
.mini__title { display: flex; align-items: center; gap: 0.375rem; font-size: 0.875rem; font-weight: 600; color: var(--heading); }
.mini__title > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mini__domain { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--text-4); }
.mini__desc { font-size: 0.75rem; line-height: 1.5; color: var(--text-2); margin-top: 0.125rem; }
.mini__arrow { font-size: 0.875rem; color: var(--text-4); flex-shrink: 0; margin-top: 0.125rem; transition: color 0.15s, transform 0.15s; }
a.mini:hover .mini__arrow { color: var(--heading); transform: translate(1px, -1px); }
.mini .logo { width: 2.25rem; height: 2.25rem; }
.soon {
  display: inline-block; padding: 0 0.4rem; border-radius: 9999px; font-size: 0.5625rem; line-height: 1rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em; background: var(--chip-bg); color: var(--text-3); border: 1px solid var(--chip-border);
  white-space: nowrap;
}
.monogram { font-size: 0.875rem; font-weight: 700; color: var(--text-2); letter-spacing: -0.02em; }

/* ---------- Education & credentials ---------- */
.edu { display: flex; align-items: center; gap: 0.75rem; padding: 1rem; }
@media (min-width: 640px) { .edu { gap: 1rem; padding: 1.25rem; } }
.edu .logo { background: var(--chip-bg); }
.edu .logo .icon { font-size: 1.125rem; color: var(--text-2); }
.edu__name { font-weight: 600; font-size: 0.875rem; color: var(--heading); }
.edu__sub { font-size: 0.75rem; color: var(--text-3); }
@media (min-width: 640px) { .edu__name { font-size: 1rem; } .edu__sub { font-size: 0.875rem; } }

/* ---------- Writing ---------- */
.post { padding: 1.25rem; }
.post__meta-row { display: flex; flex-direction: column; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.5rem; }
@media (min-width: 640px) { .post__meta-row { flex-direction: row; align-items: center; } }
.post__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-3); }
.post__toggle {
  display: inline-flex; align-items: center; gap: 0.25rem; align-self: flex-start;
  font-size: 0.75rem; font-weight: 600; color: var(--accent);
}
.post__toggle:hover { text-decoration: underline; }
.post__toggle .icon { font-size: 0.875rem; transition: transform 0.15s; }
.post.is-open .post__toggle .icon { transform: rotate(180deg); }
.post__title { font-size: 1rem; line-height: 1.5rem; font-weight: 700; color: var(--heading); margin-bottom: 0.5rem; }
.post__title a:hover { text-decoration: underline; text-underline-offset: 3px; }
@media (min-width: 640px) { .post__title { font-size: 1.125rem; line-height: 1.75rem; } }
.post__body { font-size: 0.75rem; line-height: 1.625; color: var(--text-2); display: flex; flex-direction: column; gap: 0.75rem; }
@media (min-width: 640px) { .post__body { font-size: 0.875rem; } }
.post__body code { font-family: var(--font-mono); font-size: 0.92em; background: var(--chip-bg); padding: 0.05em 0.35em; border-radius: 0.25rem; }
.post__body a { color: var(--accent); font-weight: 600; }
.post__body a:hover { text-decoration: underline; }
.post:not(.is-open) .post__body > :not(:first-child) { display: none; }
.post:not(.is-open) .post__body > :first-child {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.post.is-open .post__body { margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--divider); color: var(--text-strong); }
.post__links { display: flex; flex-wrap: wrap; gap: 0.75rem; padding-top: 0.25rem; }
.post__links a { display: inline-flex; align-items: center; gap: 0.25rem; font-size: 0.75rem; }
.post__links .icon { font-size: 0.75rem; }

/* ---------- Contact ---------- */
.contact {
  position: relative; border: 1px solid var(--border); border-radius: 1rem; background: var(--card);
  padding: 2rem; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 1rem;
}
@media (min-width: 640px) { .contact { padding: 3rem; } }
.contact__badge {
  position: absolute; top: -0.875rem; left: 50%; transform: translateX(-50%);
  border-radius: 0.75rem; padding: 0.125rem 1rem; font-size: 0.75rem; font-weight: 600;
  background: var(--inv-bg); color: var(--inv-fg); border: 1px solid var(--inv-border); box-shadow: var(--shadow-xs);
}
.contact p { max-width: 28rem; font-size: 0.875rem; line-height: 1.625; color: var(--text-2); }
@media (min-width: 640px) { .contact p { font-size: 1rem; } }
.contact__actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.75rem; margin-top: 0.5rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; border-radius: 0.75rem;
  font-size: 0.75rem; font-weight: 600; transition: opacity 0.15s, background-color 0.15s;
}
.btn .icon { font-size: 1rem; }
.btn--dark { background: var(--inv-bg); color: var(--inv-fg); }
.btn--dark:hover { opacity: 0.9; }
.btn--light { background: var(--chip-bg); color: var(--chip-fg); border: 1px solid var(--chip-border); }
.btn--light:hover { background: var(--chip-bg-hover); }
@media (min-width: 640px) { .btn { font-size: 0.875rem; } }

.footer { text-align: center; font-size: 0.75rem; color: var(--text-3); padding: 0.5rem 0 1.5rem; display: flex; flex-direction: column; gap: 0.375rem; }
.footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.25rem 0.75rem; }
.footer a:hover { color: var(--heading); text-decoration: underline; }

/* ---------- Bottom dock ---------- */
.dock-wrap { pointer-events: none; position: fixed; left: 0; right: 0; bottom: max(1rem, env(safe-area-inset-bottom)); z-index: 50; }
.dock {
  pointer-events: auto; position: relative; height: 3.5rem; width: fit-content; max-width: calc(100vw - 1rem);
  margin: 0 auto; padding: 0.25rem; display: flex; align-items: center; gap: 0.125rem;
  border: 1px solid var(--dock-border); background: var(--dock-bg);
  -webkit-backdrop-filter: blur(64px); backdrop-filter: blur(64px);
  box-shadow: var(--shadow-xl); border-radius: 9999px;
  transition: background-color 0.2s, border-color 0.2s;
}
@media (min-width: 640px) { .dock { padding: 0.5rem; gap: 0.5rem; } }
.dock__item {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.625rem; border-radius: 9999px; color: var(--text-2);
  transition: color 0.15s, background-color 0.15s;
}
.dock__item:hover, .dock__item[aria-expanded="true"] { color: var(--heading); background: var(--dock-hover); }
.dock__item .icon { font-size: 1.125rem; }
.dock__sep { width: 1px; height: 1.5rem; background: var(--border); margin: 0 0.125rem; flex-shrink: 0; }
@media (max-width: 380px) { .dock__item { padding: 0.5rem; } .dock__opt { display: none; } }
.theme-toggle .i-sun { display: none; }
html.dark .theme-toggle .i-sun { display: block; }
html.dark .theme-toggle .i-moon { display: none; }

/* Email popover */
.email { position: relative; display: inline-flex; }
.popover {
  position: absolute; bottom: calc(100% + 1.1rem); left: 50%; transform: translateX(-50%);
  width: 18rem; z-index: 60; padding: 0.625rem; border-radius: 1rem;
  background: var(--popover-bg); border: 1px solid var(--chip-border); box-shadow: var(--shadow-2xl);
  animation: pop-in 0.15s ease-out;
}
.popover[hidden] { display: none; }
.popover::after {
  content: ''; position: absolute; left: 50%; bottom: -0.4rem; width: 0.75rem; height: 0.75rem;
  transform: translateX(-50%) rotate(45deg); background: var(--popover-bg);
  border-right: 1px solid var(--chip-border); border-bottom: 1px solid var(--chip-border);
}
@media (max-width: 520px) { .popover { left: auto; right: -5.5rem; transform: none; } .popover::after { left: auto; right: 6.25rem; transform: rotate(45deg); } }
.popover__head {
  padding: 0.375rem 0.75rem; font-size: 0.6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-4); text-align: center; border-bottom: 1px solid var(--divider); margin-bottom: 0.375rem;
}
.popover__item {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  padding: 0.625rem; border-radius: 0.75rem; border: 1px solid transparent; transition: background-color 0.15s, border-color 0.15s;
}
.popover__item:hover { background: var(--soft-bg); border-color: var(--border); }
.popover__item a { display: flex; flex-direction: column; flex: 1; min-width: 0; text-align: left; }
.popover__item strong { font-size: 0.75rem; font-weight: 600; color: var(--heading); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.popover__item small { font-size: 0.625rem; color: var(--text-3); }
.copy-btn { padding: 0.375rem; border-radius: 0.5rem; color: var(--text-4); border: 1px solid transparent; flex-shrink: 0; transition: color 0.15s, background-color 0.15s; }
.copy-btn:hover { color: var(--accent); background: var(--card); border-color: var(--border); }
.copy-btn .icon { font-size: 0.8125rem; }
.copy-btn .i-check { display: none; color: var(--success); }
.copy-btn.is-copied .i-check { display: block; }
.copy-btn.is-copied .i-copy { display: none; }

@keyframes pop-in { from { opacity: 0; translate: 0 6px; } to { opacity: 1; translate: 0 0; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

@media print {
  .dock-wrap, .skip-link, .gh, .post__toggle { display: none !important; }
  .post .post__body > * { display: block !important; -webkit-line-clamp: unset !important; }
  .page { padding: 0; max-width: none; }
}