/* ============================================================
   Hemant Dhakal — legacy .NET modernization & AI integration
   Design tokens
   ============================================================ */

:root {
  --paper:      #F1F3F2;
  --paper-2:    #E7EBE9;
  --paper-3:    #DDE3E0;
  --ink:        #131A19;
  --ink-2:      #4A5654;
  --ink-3:      #7E8A87;
  --rule:       #CBD3D0;

  --add:        #0E6B4C;
  --add-bg:     #DFEDE6;
  --gone:       #8A4A3C;
  --gone-bg:    #EFE3DF;

  --panel:      #131A19;
  --panel-2:    #1D2726;
  --panel-text: #D6DEDB;
  --panel-mute: #77837F;
  --panel-add:  #58C79B;
  --panel-gone: #CB8672;

  --display: 'Archivo', system-ui, sans-serif;
  --body:    'IBM Plex Sans', system-ui, sans-serif;
  --mono:    'IBM Plex Mono', ui-monospace, monospace;

  --gutter:  72px;
  --measure: 1180px;
  --pad:     clamp(1.25rem, 4vw, 3rem);
}

/* ============================================================
   Reset & base
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

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

/* ============================================================
   Type roles
   ============================================================ */

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 1.5rem;
}

.h1 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 6.4vw, 4.9rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 0.98;
  margin: 0;
  text-wrap: balance;
}

.h2 {
  font-family: var(--display);
  font-size: clamp(1.85rem, 3.6vw, 2.85rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}

.h3 {
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin: 0 0 0.5rem;
}

.lede {
  font-size: clamp(1.075rem, 1.5vw, 1.3rem);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 58ch;
  margin: 1.75rem 0 0;
}

.note {
  font-family: var(--mono);
  font-size: 0.775rem;
  line-height: 1.5;
  color: var(--ink-3);
}

.prose { max-width: 62ch; color: var(--ink-2); }
.prose p { margin: 0 0 1.15rem; }
.prose strong { color: var(--ink); font-weight: 600; }

/* Author-fill markers — replace every one of these before launch. */
.todo {
  color: var(--gone);
  background: var(--gone-bg);
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 0.05em 0.35em;
  border-radius: 2px;
  white-space: nowrap;
}

/* ============================================================
   Shell & gutter
   ============================================================ */

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.sec {
  display: grid;
  grid-template-columns: var(--gutter) minmax(0, 1fr);
  border-top: 1px solid var(--rule);
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
}

.sec-mark {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  padding-top: 0.4rem;
}

.sec-body { min-width: 0; }

@media (max-width: 800px) {
  .sec { grid-template-columns: 1fr; gap: 1.25rem; }
  .sec-mark { padding-top: 0; }
}

/* ============================================================
   Nav
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}

.nav-in {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0.85rem var(--pad);
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  margin-right: auto;
}

.brand span { color: var(--ink-3); font-weight: 500; }

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-2);
  padding-block: 0.25rem;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}

.nav-links a:hover { color: var(--ink); border-bottom-color: var(--add); }

@media (max-width: 720px) { .nav-links { display: none; } }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  border-radius: 3px;
  cursor: pointer;
  transition: background 0.18s, transform 0.18s, border-color 0.18s;
}

.btn:hover { background: var(--add); border-color: var(--add); transform: translateY(-1px); }

.btn-quiet {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}

.btn-quiet:hover { background: transparent; color: var(--add); border-color: var(--add); }

.btn-sm { padding: 0.6rem 1rem; font-size: 0.75rem; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.arrow { transition: transform 0.18s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ============================================================
   Hero
   ============================================================ */

.hero {
  display: grid;
  grid-template-columns: var(--gutter) minmax(0, 1fr);
  padding-block: clamp(3.5rem, 8vw, 7rem) clamp(3rem, 6vw, 5rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}

.hero-content {
  width: 100%;
  max-width: none;
}

.hero-content .h1 {
  width: 100%;
  max-width: none;
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; gap: 1.25rem; }
}

/* ============================================================
   Signature: the diff panel
   ============================================================ */

.diff {
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: clamp(0.74rem, 1.05vw, 0.83rem);
  line-height: 1.5;
  box-shadow: 0 18px 45px rgba(19, 26, 25, 0.12);
}

.diff-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: var(--panel-2);
  color: var(--panel-mute);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}

.diff-bar b { color: var(--panel-text); font-weight: 500; letter-spacing: 0; }

.diff-body { padding: 0.85rem 0 1.1rem; }

.diff-line {
  display: grid;
  grid-template-columns: 2.4rem 1.4rem 1fr;
  align-items: baseline;
  padding: 0.28rem 1rem 0.28rem 0;
  color: var(--panel-text);
}

.diff-num { color: #4A5654; text-align: right; padding-right: 0.9rem; font-size: 0.9em; }
.diff-sign { font-weight: 500; }

.diff-line-gone { background: rgba(203, 134, 114, 0.09); }
.diff-line-gone .diff-sign { color: var(--panel-gone); }
.diff-line-gone .diff-text { color: var(--panel-gone); text-decoration: line-through; text-decoration-thickness: 1px; text-decoration-color: rgba(203,134,114,0.5); }

.diff-line-add { background: rgba(88, 199, 155, 0.1); }
.diff-line-add .diff-sign { color: var(--panel-add); }
.diff-line-add .diff-text { color: #E4F1EB; }

.diff-foot {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 0.7rem 1rem;
  color: var(--panel-mute);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

/* Staged reveal — one orchestrated beat on load, then it rests. */
.diff-line { opacity: 0; transform: translateY(6px); }
.diff-ready .diff-line { animation: liftIn 0.42s cubic-bezier(0.2, 0.7, 0.3, 1) forwards; }

@keyframes liftIn { to { opacity: 1; transform: none; } }

/* ============================================================
   Proof strip
   ============================================================ */

.proof {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}

.proof-in {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1rem var(--pad);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--ink-2);
}

.proof-in span { display: inline-flex; align-items: center; gap: 1.4rem; }
.proof-in span::after { content: '/'; color: var(--rule); }
.proof-in span:last-child::after { content: ''; }

/* ============================================================
   Problem list
   ============================================================ */

.quotes {
  display: grid;
  gap: 0;
  margin-top: 2.5rem;
  border-top: 1px solid var(--rule);
}

.quote {
  border-bottom: 1px solid var(--rule);
  padding: 1.4rem 0;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: baseline;
}

.quote-said {
  font-family: var(--display);
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.quote-real { color: var(--ink-2); margin: 0; font-size: 0.98rem; }

@media (max-width: 700px) { .quote { grid-template-columns: 1fr; gap: 0.5rem; } }

/* ============================================================
   Work / changelog entries
   ============================================================ */

.work { display: grid; gap: 0; margin-top: 2.5rem; border-top: 1px solid var(--rule); }

.entry {
  border-bottom: 1px solid var(--rule);
  padding: 1.9rem 0;
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) auto;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: start;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
}

.entry:hover { background: var(--paper-2); }
.entry:hover .entry-go { color: var(--add); }
.entry:hover .arrow { transform: translateX(3px); }

.entry-meta { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--ink-3); }
.entry-meta b { display: block; color: var(--add); font-weight: 500; margin-bottom: 0.3rem; }

.entry-out { color: var(--ink-2); margin: 0.5rem 0 0.9rem; font-size: 0.99rem; max-width: 58ch; }

.entry-points {
  margin: 0 0 0.9rem;
  padding-left: 1.1rem;
  color: var(--ink-2);
  font-size: 0.95rem;
  max-width: 62ch;
}

.entry-points li { margin-bottom: 0.35rem; }

.stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.chip {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink-2);
}

.entry-go {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.18s;
}

@media (max-width: 860px) {
  .entry { grid-template-columns: 1fr; gap: 0.85rem; }
  .entry-go { white-space: normal; }
}

/* ============================================================
   Scope grid
   ============================================================ */

.scope {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 2.5rem;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}

.scope-cell {
  background: var(--paper);
  padding: 1.5rem 1.25rem;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.scope-cell:nth-child(3n) { border-right: none; }
.scope-cell:nth-last-child(-n+3) { border-bottom: none; }

.scope-cell h4 { font-family: var(--display); font-size: 0.95rem; font-weight: 700; margin: 0 0 0.35rem; letter-spacing: -0.01em; }
.scope-cell p { margin: 0; font-size: 0.88rem; color: var(--ink-2); line-height: 1.5; }

@media (max-width: 900px) {
  .scope { grid-template-columns: repeat(2, 1fr); }
  .scope-cell:nth-child(3n) { border-right: 1px solid var(--rule); }
  .scope-cell:nth-child(2n) { border-right: none; }
  .scope-cell:nth-last-child(-n+2) { border-bottom: none; }
}

@media (max-width: 600px) {
  .scope { grid-template-columns: 1fr; }
  .scope-cell { border-right: none; border-bottom: 1px solid var(--rule); }
  .scope-cell:last-child { border-bottom: none; }
}

/* ============================================================
   Process — numbering is justified: this is a real sequence
   ============================================================ */

.steps { display: grid; gap: 0; margin-top: 2.5rem; border-top: 1px solid var(--rule); }

.step {
  border-bottom: 1px solid var(--rule);
  padding: 1.7rem 0;
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr) 9rem;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: start;
}

.step-n {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--add);
  padding-top: 0.15rem;
}

.step p { margin: 0.35rem 0 0; color: var(--ink-2); font-size: 0.98rem; max-width: 54ch; }

.step-when {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  text-align: right;
  padding-top: 0.25rem;
}

@media (max-width: 780px) {
  .step { grid-template-columns: 3rem 1fr; }
  .step-when { grid-column: 2; text-align: left; padding-top: 0.6rem; }
}

.pricing {
  margin-top: 2rem;
  padding: 1.25rem 1.4rem;
  background: var(--add-bg);
  border-left: 3px solid var(--add);
  border-radius: 0;
  font-size: 0.95rem;
  color: #0A4231;
  max-width: 62ch;
}

/* ============================================================
   Contact
   ============================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.form { display: grid; gap: 1rem; }

.field { display: grid; gap: 0.4rem; }

.field label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.field input,
.field select,
.field textarea {
  font-family: var(--body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.7rem 0.8rem;
  width: 100%;
  transition: border-color 0.18s;
}

.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--add); }

.field textarea { resize: vertical; min-height: 120px; line-height: 1.55; }

.form-msg {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--add);
  min-height: 1.2em;
}

.form-msg[data-state='error'] { color: var(--gone); }

.direct { display: grid; gap: 0.9rem; margin-top: 1.75rem; }

.direct-row {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.82rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--rule);
}

.direct-row span { color: var(--ink-3); min-width: 5.5rem; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; }
.direct-row a { color: var(--ink); text-decoration-color: var(--rule); text-underline-offset: 3px; }
.direct-row a:hover { color: var(--add); }

/* ============================================================
   Footer
   ============================================================ */

.foot {
  border-top: 1px solid var(--rule);
  background: var(--paper-2);
}

.foot-in {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem var(--pad);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-3);
  letter-spacing: 0.05em;
}

.foot-in a { color: var(--ink-2); text-decoration: none; margin-left: 1.25rem; }
.foot-in a:first-child { margin-left: 0; }
.foot-in a:hover { color: var(--add); }

/* ============================================================
   Case study page
   ============================================================ */

.cs-head { padding-block: clamp(3rem, 6vw, 5rem) 0; }

.back {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  text-decoration: none;
  display: inline-flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.back:hover { color: var(--add); }

.cs-summary {
  font-family: var(--display);
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.35;
  max-width: 34ch;
  margin: 2rem 0 0;
  padding-left: 1.25rem;
  border-left: 3px solid var(--add);
  text-wrap: balance;
}

.factbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin-top: 2.5rem;
  background: var(--rule);
  border-block: 1px solid var(--rule);
}

.fact { background: var(--paper); padding: 1rem 0.25rem 1rem 0; }
.fact dt { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.35rem; }
.fact dd { margin: 0; font-size: 0.92rem; font-weight: 500; }

.decision {
  border-top: 1px solid var(--rule);
  padding: 1.6rem 0;
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2rem);
}

.decision:last-of-type { border-bottom: 1px solid var(--rule); }

.tradeoff {
  margin-top: 0.9rem;
  padding: 0.75rem 1rem;
  background: var(--gone-bg);
  border-left: 3px solid var(--gone);
  font-size: 0.92rem;
  color: #5E3126;
  max-width: 60ch;
}

.tradeoff b { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; display: block; margin-bottom: 0.25rem; }

.results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  margin-top: 2rem;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}

.result { background: var(--paper); padding: 1.4rem 1.25rem; }
.result b { display: block; font-family: var(--display); font-size: 1.9rem; font-weight: 800; letter-spacing: -0.03em; color: var(--add); line-height: 1; margin-bottom: 0.4rem; }
.result span { font-size: 0.85rem; color: var(--ink-2); line-height: 1.45; display: block; }

@media (max-width: 700px) { .decision { grid-template-columns: 1fr; gap: 0.5rem; } }

/* ============================================================
   Scroll reveal — quiet, 400ms, one direction
   ============================================================ */

.rise { opacity: 0; transform: translateY(14px); }
.rise-in { opacity: 1; transform: none; transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.3, 1); }

/* ============================================================
   Reduced motion — everything lands instantly, nothing moves
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.001ms !important;
  }
  .rise { opacity: 1; transform: none; }
  .diff-line { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  z-index: 100;
}

.skip:focus { left: 0; }

.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;
}