/* ============================================================
   Trinabh Karki - Technical SEO Analyst
   Design system: the machine-readable layer made visible.
   ============================================================ */

:root {
  --paper:      #F3F4F0;  /* cool off-white base                     */
  --panel:      #FCFCFA;  /* raised card surface                     */
  --ink:        #15171C;  /* near-black, faint blue                  */
  --ink-soft:   #4A4F57;  /* secondary text                          */
  --ink-faint:  #868C93;  /* tertiary / captions                     */
  --line:       #DEE0D7;  /* hairline on paper                       */
  --line-soft:  #E9EAE3;  /* hairline on panels                      */
  --index:      #14794E;  /* the live / indexed / 200 accent         */
  --index-dim:  #0F5C3B;  /* darker green for text on light          */
  --signal:     #B4471F;  /* clay - the one warning/error moment     */

  --display: "Space Grotesk", system-ui, sans-serif;
  --body:    "Inter", system-ui, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1080px;
  --gutter: clamp(1.25rem, 5vw, 3.5rem);
  --radius: 14px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

::selection { background: var(--index); color: #fff; }

:focus-visible {
  outline: 2px solid var(--index);
  outline-offset: 3px;
  border-radius: 3px;
}

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

/* ---------- mono tokens / eyebrows : the data layer ---------- */
.token {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.token .slash { color: var(--index); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1.4rem;
}
.eyebrow b { color: var(--index-dim); font-weight: 500; }

/* live status dot */
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--index);
  display: inline-block;
  position: relative;
  box-shadow: 0 0 0 0 rgba(20,121,78,.5);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(20,121,78,.45); }
  70%  { box-shadow: 0 0 0 7px rgba(20,121,78,0); }
  100% { box-shadow: 0 0 0 0 rgba(20,121,78,0); }
}
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } }

/* ============================================================
   Header
   ============================================================ */
.site-head {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(1.4) blur(10px);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.head-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: .7rem; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  font-family: var(--display); font-weight: 700; font-size: 1.05rem;
  transition: background .25s var(--ease);
}
.brand:hover .brand-mark { background: var(--index); }
.brand-name { font-family: var(--display); font-weight: 500; font-size: .98rem; letter-spacing: -.01em; }
.brand-name span { display: block; font-family: var(--mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); margin-top: 1px; }

.nav { display: flex; align-items: center; gap: 1.7rem; }
.nav a {
  font-size: .92rem; color: var(--ink-soft);
  position: relative; padding: .2rem 0;
  transition: color .2s var(--ease);
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  height: 1.5px; width: 0; background: var(--index);
  transition: width .25s var(--ease);
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav a:hover::after, .nav a[aria-current="page"]::after { width: 100%; }

.head-cta {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--index-dim);
  border: 1px solid var(--line); border-radius: 999px;
  padding: .42rem .8rem; background: var(--panel);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.head-cta:hover { border-color: var(--index); transform: translateY(-1px); }

.nav-toggle { display: none; }

@media (max-width: 760px) {
  .nav, .head-cta { display: none; }
  .head-inner {
    flex-wrap: wrap;
    height: auto;
    min-height: 64px;
    position: relative;
  }
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 4px;
    background: none; border: 0; cursor: pointer; padding: 8px;
    margin-left: auto;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--ink); transition: .25s var(--ease); }
  .site-head.open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-head.open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-head.open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .site-head.open .nav {
    display: flex; flex-direction: column; align-items: flex-start;
    order: 3;
    flex: 0 0 100%;
    width: 100%;
    gap: 1.1rem; padding: 1rem 0 1.35rem;
    border-top: 1px solid var(--line);
    background: var(--paper);
  }
  .site-head.open .nav a { display: block; width: 100%; }
  .site-head.open .nav a { font-size: 1.15rem; }
}

/* ============================================================
   Metadata panel - the signature element
   ============================================================ */
.meta-panel {
  font-family: var(--mono); font-size: .82rem; line-height: 1.85;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.meta-bar {
  display: flex; align-items: center; gap: .55rem;
  padding: .65rem .95rem;
  background: var(--ink); color: var(--paper);
  font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
}
.meta-bar .req { color: #9fb8ab; }
.meta-bar .ok  { margin-left: auto; color: #7fd6a6; }
.meta-body { padding: 1rem 1.1rem 1.15rem; }
.meta-row { display: flex; gap: .8rem; color: var(--ink-soft); }
.meta-row .k { color: var(--ink-faint); min-width: 88px; }
.meta-row .v { color: var(--ink); }
.meta-row .v.live { color: var(--index-dim); display: inline-flex; align-items: center; gap: .5rem; }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding: clamp(3.5rem, 9vw, 6.5rem) 0 clamp(2.5rem, 6vw, 4rem); }
.hero-grid { display: grid; grid-template-columns: 1.35fr .9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2.6rem, 6.4vw, 4.7rem);
  line-height: 1.02; letter-spacing: -.025em; margin: 0 0 1.3rem;
}
.hero h1 em { font-style: normal; color: var(--index-dim); }
.hero-lede { font-size: clamp(1.05rem, 1.8vw, 1.22rem); color: var(--ink-soft); max-width: 46ch; margin: 0 0 2rem; }
.hero-cta-row { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; }

.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--body); font-weight: 500; font-size: .95rem;
  padding: .8rem 1.4rem; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--index); transform: translateY(-2px); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--panel); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translate(3px,-3px); }

@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-aside { max-width: 440px; }
}

/* ============================================================
   Generic section + page header
   ============================================================ */
.section { padding: clamp(3rem, 7vw, 5.5rem) 0; border-top: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: 2.6rem; }
.section-head h2 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(1.75rem, 3.6vw, 2.6rem);
  letter-spacing: -.02em; line-height: 1.08; margin: 0 0 .9rem;
}
.section-head p { color: var(--ink-soft); margin: 0; }

.proof-strip { padding: clamp(1.8rem, 4vw, 2.8rem) 0; }
.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.proof-grid > div {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
.proof-grid .num,
.metric-note {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--index-dim);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.proof-grid strong {
  display: block;
  margin-top: .45rem;
  color: var(--ink);
  font-size: .98rem;
  line-height: 1.5;
}
.metric-note {
  display: block;
  margin-top: .75rem;
  line-height: 1.55;
  text-transform: none;
  letter-spacing: .02em;
}
@media (max-width: 760px) {
  .proof-grid { grid-template-columns: 1fr; }
}

.page-head { padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(1.5rem, 4vw, 2.5rem); }
.page-head h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2.3rem, 5.6vw, 3.8rem);
  letter-spacing: -.025em; line-height: 1.04; margin: 0 0 1rem; max-width: 18ch;
}
.page-head p { color: var(--ink-soft); max-width: 56ch; font-size: 1.1rem; margin: 0; }

/* ============================================================
   Cards / grids
   ============================================================ */
.grid { display: grid; gap: 1.2rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid-3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: var(--panel); border: 1px solid var(--line-soft);
  border-radius: var(--radius); padding: 1.6rem 1.5rem;
  transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--line); box-shadow: 0 14px 34px -22px rgba(21,23,28,.35); }
.card .num { font-family: var(--mono); font-size: .72rem; color: var(--index-dim); letter-spacing: .1em; }
.card h3 { font-family: var(--display); font-weight: 500; font-size: 1.22rem; letter-spacing: -.01em; margin: .7rem 0 .55rem; }
.card p { color: var(--ink-soft); font-size: .96rem; margin: 0; }
.card .tags { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: .4rem; }
.tag { font-family: var(--mono); font-size: .66rem; letter-spacing: .06em; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 5px; padding: .2rem .45rem; }

/* link list rows */
.rows { border-top: 1px solid var(--line); }
.row {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1.2rem; align-items: baseline;
  padding: 1.4rem 0; border-bottom: 1px solid var(--line);
  transition: padding-left .25s var(--ease);
}
.row:hover { padding-left: .6rem; }
.row .row-no { font-family: var(--mono); font-size: .8rem; color: var(--index-dim); }
.row h3 { font-family: var(--display); font-weight: 500; font-size: 1.3rem; margin: 0 0 .3rem; letter-spacing: -.01em; }
.row p { margin: 0; color: var(--ink-soft); font-size: .96rem; max-width: 60ch; }
.row .row-meta { font-family: var(--mono); font-size: .72rem; color: var(--ink-faint); white-space: nowrap; }
@media (max-width: 620px) { .row { grid-template-columns: auto 1fr; } .row .row-meta { display: none; } }

/* ============================================================
   Skill / stack chips
   ============================================================ */
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  font-family: var(--mono); font-size: .76rem; letter-spacing: .02em;
  border: 1px solid var(--line); border-radius: 7px;
  padding: .45rem .7rem; background: var(--panel); color: var(--ink-soft);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.chip:hover { border-color: var(--index); color: var(--index-dim); }

/* definition-style stat row */
.stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; }
@media (max-width: 620px){ .stats { grid-template-columns: 1fr; } }
.stat { border-left: 2px solid var(--index); padding-left: 1rem; }
.stat .big { font-family: var(--display); font-weight: 700; font-size: clamp(1.6rem,3vw,2.1rem); letter-spacing: -.02em; }
.stat .lbl { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-faint); margin-top: .2rem; }

/* ============================================================
   Dark CTA band
   ============================================================ */
.band {
  background: var(--ink); color: var(--paper);
  border-radius: var(--radius); padding: clamp(2.2rem, 5vw, 3.4rem);
  display: grid; grid-template-columns: 1fr auto; gap: 1.6rem; align-items: center;
}
.band h2 { font-family: var(--display); font-weight: 700; font-size: clamp(1.6rem,3.4vw,2.4rem); letter-spacing: -.02em; margin: 0 0 .6rem; }
.band p { color: #b9bcc2; margin: 0; max-width: 48ch; }
.band .btn-primary { background: var(--index); }
.band .btn-primary:hover { background: #18a169; }
@media (max-width: 700px){ .band { grid-template-columns: 1fr; } }

/* ============================================================
   Prose (blog posts / about narrative)
   ============================================================ */
.prose { max-width: 68ch; }
.prose p { margin: 0 0 1.25rem; color: #2c2f35; }
.prose h2 { font-family: var(--display); font-weight: 700; font-size: 1.6rem; letter-spacing: -.015em; margin: 2.6rem 0 1rem; }
.prose h3 { font-family: var(--display); font-weight: 500; font-size: 1.22rem; margin: 2rem 0 .7rem; }
.prose ul, .prose ol { color: #2c2f35; padding-left: 1.2rem; margin: 0 0 1.4rem; }
.prose li { margin-bottom: .55rem; }
.prose li::marker { color: var(--index); }
.prose code { font-family: var(--mono); font-size: .86em; background: #e7e9e1; padding: .12em .4em; border-radius: 5px; }
.prose strong { font-weight: 600; }
.prose blockquote {
  margin: 1.6rem 0; padding: .4rem 0 .4rem 1.3rem;
  border-left: 2px solid var(--index); color: var(--ink-soft); font-style: italic;
}
.callout {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem 1.3rem; margin: 1.8rem 0; font-size: .96rem;
}
.callout .token { display: block; margin-bottom: .5rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-foot { border-top: 1px solid var(--line); padding: 3rem 0 3.5rem; margin-top: 1rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.foot-grid h4 { font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 1rem; font-weight: 500; }
.foot-grid a { display: block; color: var(--ink-soft); font-size: .94rem; padding: .25rem 0; transition: color .2s var(--ease); }
.foot-grid a:hover { color: var(--index-dim); }
.foot-grid a.social-link {
  display: flex;
  align-items: center;
  gap: .45rem;
}
.social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex: 0 0 auto;
}
.foot-lead { font-family: var(--display); font-size: 1.15rem; max-width: 32ch; line-height: 1.4; }
.foot-base {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: .72rem; color: var(--ink-faint); letter-spacing: .04em;
}
@media (max-width: 620px){ .foot-grid { grid-template-columns: 1fr; gap: 1.6rem; } }

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

.mt-0 { margin-top: 0; }
.center { text-align: center; }