/* -------------------------------------------------------------------------
   EST · AI Practice · Selected Work
   Shared stylesheet — violet edition
   ------------------------------------------------------------------------- */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Neutrals */
  --bg:            #FAF8FD;
  --bg-alt:        #F3F0F8;
  --surface:       #FFFFFF;
  --ink:           #0B0714;
  --ink-soft:      #322A44;
  --meta:          #6C6579;
  --rule:          #E7E1F4;
  --rule-strong:   #D4CBE6;

  /* Violet accent — deeper cousin of the parent site's #9333EA */
  --primary:       #7C3AED;
  --primary-dark:  #5B21B6;
  --primary-light: #A78BFA;
  --primary-tint:  rgba(124, 58, 237, 0.05);
  --primary-glow:  rgba(124, 58, 237, 0.14);
  --primary-line:  rgba(124, 58, 237, 0.28);
  --lilac-glow:    rgba(167, 139, 250, 0.10);

  /* Type stack */
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --container-max: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm:  0 1px 2px rgba(13, 8, 23, 0.04);
  --shadow-md:  0 8px 28px -10px rgba(13, 8, 23, 0.10);
  --shadow-lg:  0 20px 60px -20px rgba(124, 58, 237, 0.20);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16.5px;
  line-height: 1.6;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  overflow-x: hidden;
}

/* Ambient aurora — soft violet glows fixed to the viewport */
body::before {
  content: '';
  position: fixed;
  top: -280px;
  left: -220px;
  width: 780px;
  height: 780px;
  background: radial-gradient(circle at center, var(--primary-glow), transparent 62%);
  z-index: -1;
  pointer-events: none;
}
body::after {
  content: '';
  position: fixed;
  bottom: -340px;
  right: -300px;
  width: 900px;
  height: 900px;
  background: radial-gradient(circle at center, var(--lilac-glow), transparent 62%);
  z-index: -1;
  pointer-events: none;
}

::selection { background: var(--primary); color: #fff; }
a { color: inherit; text-decoration: none; }
img, video, iframe { max-width: 100%; display: block; }

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

/* -------------------------------------------------------------------------
   Masthead
   ------------------------------------------------------------------------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1.15rem 0;
  background: #F1EBFB;
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  border-bottom: 1px solid var(--primary-line);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand-mark {
  display: inline-block;
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-name { color: var(--ink); }

.brand-sub {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-left: 0.3rem;
  padding-left: 0.7rem;
  border-left: 1px solid var(--rule-strong);
}

.mast-meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 500;
}

/* -------------------------------------------------------------------------
   Landing hero
   ------------------------------------------------------------------------- */

.page-title {
  text-align: center;
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2.75rem, 6vw, 4.5rem);
  position: relative;
}

.page-title h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-variation-settings: 'opsz' 144;
  font-size: clamp(2rem, 6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--ink);
}

.page-title h1 em {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(115deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.05em; /* prevents italic clipping */
}

.page-subtitle {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(0.98rem, 1.35vw, 1.12rem);
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 1.5rem auto 0;
  max-width: 62ch;
  letter-spacing: -0.005em;
}

/* -------------------------------------------------------------------------
   Index list
   ------------------------------------------------------------------------- */

.index-list {
  list-style: none;
  padding: 0;
  margin: 0 0 6rem;
  border-top: 1px solid var(--rule);
}

.entry {
  border-bottom: 1px solid var(--rule);
  transition: background-color 0.3s ease;
  position: relative;
}

/* Violet accent line reveals from top on hover */
.entry::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--primary-light));
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}

.entry:hover::before { transform: scaleY(1); }

.entry:first-child { border-top: none; }

.entry-link {
  display: grid;
  grid-template-columns: 3.25rem 1fr 2rem;
  gap: 1.25rem;
  padding: 1.75rem 0.75rem 1.75rem 1rem;
  align-items: baseline;
}

@media (min-width: 720px) {
  .entry-link {
    grid-template-columns: 4.75rem 1fr 3rem;
    gap: 2.5rem;
    padding: 2.35rem 1.5rem 2.35rem 1.75rem;
  }
}

.entry:hover {
  background: linear-gradient(90deg, var(--primary-tint), transparent 72%);
}
.entry:hover .entry-title { color: var(--primary-dark); }
.entry:hover .entry-num { color: var(--primary); }
.entry:hover .entry-arrow { transform: translateX(6px); color: var(--primary); }

.entry-num {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--meta);
  letter-spacing: 0.05em;
  padding-top: 0.4rem;
  transition: color 0.25s ease;
}

.entry-main { display: block; }

.entry-title {
  font-family: var(--serif);
  font-weight: 500;
  font-variation-settings: 'opsz' 96;
  font-size: clamp(1.4rem, 3vw, 1.95rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 0.55rem;
  transition: color 0.25s ease;
}

.entry-pitch {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  max-width: 62ch;
}

.entry-arrow {
  font-family: var(--mono);
  font-size: 1.15rem;
  color: var(--meta);
  transition: transform 0.25s ease, color 0.25s ease;
  padding-top: 0.55rem;
  justify-self: end;
}

/* Non-clickable entry variant (e.g. service items without a detail page) */
.entry-static { cursor: default; }
.entry-static::before { display: none; }
.entry-static:hover { background: transparent; }
.entry-static:hover .entry-title { color: var(--ink); }
.entry-static:hover .entry-num { color: var(--meta); }
.entry-static:hover .entry-arrow { transform: none; color: var(--meta); }

/* -------------------------------------------------------------------------
   Detail page — breadcrumb + head
   ------------------------------------------------------------------------- */

.crumb {
  padding: 1.75rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--meta);
  font-weight: 500;
}

.crumb a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s ease;
}

.crumb a:hover { color: var(--primary); }

.project-head {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.project-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--meta);
  margin: 0 0 2.25rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.project-meta .num {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.35rem 0.7rem;
  background: var(--primary-tint);
  border-radius: 999px;
  border: 1px solid var(--primary-line);
  letter-spacing: 0.1em;
}

.project-title {
  font-family: var(--serif);
  font-weight: 400;
  font-variation-settings: 'opsz' 144;
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 1.75rem;
  color: var(--ink);
  max-width: 18ch;
}

.project-title em {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(115deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.05em;
}

.project-dek {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0;
}

.project-body {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
}

.project-prose {
  max-width: 66ch;
  margin: 0 auto;
}

.project-prose > p {
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
}

.project-prose > p:first-child {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--ink);
}

.project-prose > p:first-child::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  font-variation-settings: 'opsz' 144;
  font-size: 3.8rem;
  line-height: 0.85;
  float: left;
  padding: 0.35rem 0.7rem 0 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.prose-heading {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--primary);
  margin: 3rem 0 1.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  font-weight: 600;
  position: relative;
}

.prose-heading::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--primary);
}

/* Flow list — elegant numbered steps with violet pills */
.flow-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  counter-reset: step;
}

.flow-list li {
  counter-increment: step;
  padding: 1rem 0 1rem 3.75rem;
  position: relative;
  font-family: var(--sans);
  font-size: 1.02rem;
  color: var(--ink-soft);
  line-height: 1.6;
  border-bottom: 1px solid var(--rule);
}

.flow-list li:last-child { border-bottom: none; }

.flow-list li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1.05rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.08em;
  background: var(--primary-tint);
  padding: 0.35rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary-line);
  min-width: 2.5rem;
  text-align: center;
}

/* -------------------------------------------------------------------------
   Watch demo / open link cards
   ------------------------------------------------------------------------- */

.watch-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.watch-item {
  border-bottom: 1px solid var(--rule);
  transition: background 0.2s ease;
}

.watch-item:last-child { border-bottom: none; }

.watch-link {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.15rem 1.3rem;
}

.watch-item:hover {
  background: linear-gradient(90deg, var(--primary-tint), transparent 85%);
}
.watch-item:hover .watch-label { color: var(--primary-dark); }
.watch-item:hover .watch-arrow { transform: translateX(5px); color: var(--primary); }

.watch-label {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  letter-spacing: -0.005em;
}

.watch-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--primary);
  background: var(--primary-tint);
  padding: 0.32rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--primary-line);
}

.watch-arrow {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--meta);
  transition: transform 0.2s ease, color 0.2s ease;
}

/* -------------------------------------------------------------------------
   Pager (prev / next)
   ------------------------------------------------------------------------- */

.pager {
  border-top: 1px solid var(--rule);
  padding: 3rem 0 4.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.pager a {
  display: block;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  border: 1px solid transparent;
}

.pager a:hover {
  background: var(--primary-tint);
  border-color: var(--primary-line);
}

.pager-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--primary);
  margin: 0 0 0.4rem;
  font-weight: 600;
}

.pager-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.2rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}

.pager .next { text-align: right; }

/* -------------------------------------------------------------------------
   Responsive, motion, print
   ------------------------------------------------------------------------- */

@media (max-width: 640px) {
  .pager { grid-template-columns: 1fr; }
  .pager .next { text-align: left; }
  .brand-sub { display: none; }
  body::before, body::after { width: 500px; height: 500px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}

@media print {
  body { background: white; color: black; }
  body::before, body::after { display: none; }
  .entry:hover { background: transparent; }
  .watch-list, .pager { display: none; }
}