/* ============================================================
   Christopher Vistal — Portfolio (ishback-inspired minimal)
   Dead-simple: warm white, hairline rules, text-left / image-right
   ============================================================ */

:root {
  --bg:        #fcfcfb;
  --text:      #1a1a17;
  --muted:     #6c6c65;
  --faint:     #9a9a92;
  --line:      rgba(20, 18, 12, 0.10);
  --line-soft: rgba(20, 18, 12, 0.06);
  --accent:    #1a1a17;
  --surface:   #f4f3ef;
  --serif: "Roboto Slab", Georgia, serif;
  --sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --page: 1320px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.006em;
}
.mono { font-family: var(--mono); }
a { color: inherit; }

::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---------- Layout shell ---------- */
.wrap {
  width: 90%;
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}
.topbar.scrolled { border-bottom-color: var(--line); }
.topbar-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--text);
}
.topbar-name .dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #4a9e5e;
  margin-right: 7px;
  vertical-align: middle;
}
.topbar-nav { display: flex; gap: 22px; }
.topbar-nav a {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color .15s;
}
.topbar-nav a:hover { color: var(--text); }
@media (max-width: 600px) {
  .topbar-nav { gap: 16px; }
  .topbar-nav a { font-size: 11px; letter-spacing: 0.04em; }
}

/* ---------- Intro ---------- */
.intro { padding: 64px 0 56px; }
.intro-top {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 26px;
}
.intro-avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px var(--line);
}
.intro-name {
  font-family: var(--serif);
  font-size: 46px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
}
.intro-role {
  font-size: 14px;
  color: var(--muted);
  margin-top: 4px;
}
.intro-bio {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text);
  max-width: 60ch;
  margin-bottom: 22px;
}
.intro-bio b { font-weight: 600; }
.intro-bio .em { font-family: var(--serif); font-weight: 500; color: var(--accent); }
.intro-contact {
  font-size: 13.5px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  align-items: center;
}
.intro-contact a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .15s, border-color .15s;
}
.intro-contact a:hover { color: var(--accent); border-color: var(--accent); }
.intro-contact .sep { margin: 0 10px; color: var(--faint); }
.intro-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }

@media (max-width: 600px) {
  .intro { padding: 40px 0 36px; }
  .intro-name { font-size: 36px; }
  .intro-bio { font-size: 16px; }
  .intro-contact .sep { margin: 0 7px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s, border-color .18s, transform .12s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { background: #000; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--text); }

/* ---------- Section ---------- */
.section { padding: 0 0 8px; margin-top: 64px; }
.section-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  padding-bottom: 0;
  margin-bottom: 20px;
}

/* ---------- Project rows (ishback) ---------- */
.rows { display: flex; flex-direction: column; }
.row {
  display: grid;
  grid-template-columns: 0.78fr 1.45fr;
  align-items: start;
  gap: 56px;
  padding: 38px 0;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.row-cat { display: none; }
.row-meta { display: none; }
.row-title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
}
.row-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
  margin-top: 12px;
  max-width: 46ch;
}
.row-impact { display: none; }

/* media right */
.row-media {
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: 0;
  overflow: hidden;
  border: none;
  background: none;
  position: relative;
}
.row-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}
/* placeholder — bare panel, only place that needs a fill */
.row-media.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
}
.row-media.placeholder::after {
  content: attr(data-mono);
  font-family: var(--serif);
  font-size: 64px;
  color: var(--faint);
  opacity: 0.45;
  letter-spacing: -0.02em;
}

@media (max-width: 680px) {
  .row {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 28px 0;
  }
  .row-media { order: -1; }
  .row-desc { max-width: 100%; }
}

/* ---------- Experience ---------- */
.exp { display: flex; flex-direction: column; }
.exp-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.exp-item:last-child { border-bottom: none; }
.exp-date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  padding-top: 3px;
}
.exp-role { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.exp-org { font-size: 13.5px; color: var(--accent); margin: 2px 0 12px; }
.exp-bullets { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.exp-bullets li {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
  padding-left: 16px;
  position: relative;
}
.exp-bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 5px; height: 1px;
  background: var(--faint);
}
.exp-bullets li b { color: var(--text); font-weight: 600; }
@media (max-width: 600px) {
  .exp-item { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- Skills ---------- */
.skills { display: flex; flex-direction: column; }
.skill-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.skill-row:last-child { border-bottom: none; }
.skill-cat {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
  padding-top: 2px;
}
.skill-val { font-size: 14.5px; color: var(--text); line-height: 1.55; }
@media (max-width: 600px) {
  .skill-row { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- Quotes ---------- */
.quotes { display: flex; flex-direction: column; gap: 28px; }
.quote { padding-left: 0; border-left: none; }
.quote blockquote {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--text);
}
.quote figcaption { margin-top: 10px; font-size: 12.5px; color: var(--muted); }
.quote figcaption .who { font-weight: 600; color: var(--text); font-family: var(--sans); }
.quote figcaption .ctx { font-family: var(--mono); color: var(--faint); display: block; margin-top: 2px; font-size: 11px; }

/* ---------- Contact / footer ---------- */
.footer {
  margin-top: 64px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--line);
}
.footer-head {
  font-family: var(--serif);
  font-size: 30px;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.footer-sub { font-size: 14.5px; color: var(--muted); max-width: 52ch; margin-bottom: 20px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 0; align-items: center; font-size: 13.5px; }
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .15s, border-color .15s;
}
.footer-links a:hover { color: var(--accent); border-color: var(--accent); }
.footer-links .sep { margin: 0 10px; color: var(--faint); }
.footer-links + .footer-bottom { margin-top: 28px; }
.footer-bottom {
  margin-top: 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
}

/* ---------- Reveal ---------- */
.fade-in { opacity: 0; transform: translateY(12px); transition: opacity .6s cubic-bezier(0.16,1,0.3,1), transform .6s cubic-bezier(0.16,1,0.3,1); }
.fade-in.visible { opacity: 1; transform: none; }

/* ============================================================
   Project detail overlay (App Store-style expand) + drawer content
   ============================================================ */
.proj-detail {
  position: fixed; inset: 0; z-index: 99;
  background: var(--bg);
  display: none; overflow: hidden;
}
.proj-detail.open { display: block; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.proj-detail-scroller { max-width: 720px; margin: 0 auto; padding: 96px 28px 80px; }
.proj-detail-close {
  position: fixed; top: 24px; right: 24px; z-index: 102;
  background: var(--bg); border: 1px solid var(--line);
  color: var(--text); font-size: 18px; line-height: 1;
  width: 38px; height: 38px; border-radius: 6px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .18s, border-color .18s, transform .18s cubic-bezier(0.22,1,0.36,1);
}
.proj-detail-close:hover { background: var(--text); color: var(--bg); border-color: var(--text); }
.proj-detail-close:active { transform: scale(0.94); }

@supports (view-transition-name: none) {
  ::view-transition-old(*), ::view-transition-new(*) {
    animation-duration: 0.45s;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
  }
}

.drawer-title { font-family: var(--serif); font-size: 36px; font-weight: 400; letter-spacing: -0.02em; margin: 0 0 6px; }
.drawer-meta { font-family: var(--mono); font-size: 12px; color: var(--muted); margin: 0 0 30px; letter-spacing: 0.04em; }
.drawer-section-label {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--faint); margin: 34px 0 12px;
}
.drawer-prose p { font-size: 15.5px; line-height: 1.7; color: var(--muted); margin: 0 0 14px; }
.drawer-prose p:last-child { margin-bottom: 0; }
.drawer-prose b { color: var(--text); font-weight: 600; }
.drawer-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.drawer-tag {
  font-family: var(--mono); font-size: 11px;
  padding: 3px 9px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 6px; color: var(--muted);
}
.drawer-images { display: flex; flex-direction: column; gap: 14px; margin-top: 12px; }
.drawer-images img, .drawer-images video {
  width: 100%; height: auto; display: block;
  border-radius: 10px; border: 1px solid var(--line); background: var(--surface);
}
.drawer-video-frame { position: relative; width: 100%; aspect-ratio: 16/9; border-radius: 10px; border: 1px solid var(--line); overflow: hidden; }
.drawer-video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

@media (max-width: 600px) {
  .proj-detail-scroller { padding: 80px 18px 60px; }
  .drawer-title { font-size: 28px; }
}

/* ---------- Side Builds: grid of cards (distinct from Selected Work rows) ---------- */
#builds .rows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 40px 28px;
}
#builds .row {
  display: flex;
  flex-direction: column;
  padding: 0;
  gap: 0;
}
#builds .row-media {
  order: -1;
  aspect-ratio: 4 / 3;
  margin-bottom: 14px;
}
#builds .row-title { font-size: 16px; }
#builds .row-desc { font-size: 13px; max-width: none; margin-top: 6px; }

@media (max-width: 900px) {
  #builds .rows { grid-template-columns: repeat(2, 1fr); gap: 40px 28px; }
}
@media (max-width: 560px) {
  #builds .rows { grid-template-columns: 1fr; gap: 36px; }
}

/* Cover images: consistent grayscale on index only (modal/case stay full color) */
.row-media img { filter: none; }

/* Side Builds: drop the label divider */
#builds .section-label { border-bottom: none; padding-bottom: 0; }

/* ---------- Lead (top of index) ---------- */
.lead { padding: 72px 0 12px; }
.lead-head {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0 0 18px;
}
.lead-sub {
  font-size: 18px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 58ch;
  margin: 0 0 20px;
}
.lead-links {
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}
.lead-links a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .15s, border-color .15s;
}
.lead-links a:hover { color: var(--accent); border-color: var(--accent); }
.lead-links .sep { margin: 0 12px; color: var(--faint); }
@media (max-width: 600px) {
  .lead { padding: 44px 0 8px; }
  .lead-sub { font-size: 16px; }
  .lead-links .sep { margin: 0 8px; }
}

/* Brand monogram */
.topbar-name { display: inline-flex; align-items: center; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--text);
  color: var(--bg);
  font-family: var(--serif);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  border-radius: 6px;
  transform: rotate(-5deg);
  transition: transform .2s cubic-bezier(0.22,1,0.36,1), background .18s;
}
.topbar-name:hover .brand-mark { transform: rotate(0deg); }

/* ============================================================
   Case study pages (minimal, matches site)
   ============================================================ */
.case-wrap { max-width: 760px; margin: 0 auto; padding: 0 28px 96px; }
.case-back {
  display: inline-block;
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  margin: 40px 0 0;
}
.case-back::before { content: "← "; }
.case-back:hover { color: var(--accent); }

.case-frontmatter {
  margin: 28px 0 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}
.case-eyebrow {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--faint);
}
.case-h1 {
  font-family: var(--serif);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 14px 0 18px;
}
.case-deck {
  font-size: 18px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 62ch;
  margin: 0 0 26px;
}
.case-deck b { color: var(--text); font-weight: 600; }
.case-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 7px 20px;
  font-size: 13.5px;
}
.case-meta dt {
  font-size: 13.5px;
  color: var(--faint);
  padding-top: 0;
}
.case-meta dd { margin: 0; color: var(--text); }
.case-meta dd a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--line); }

/* prose */
.case-prose { font-size: 16px; line-height: 1.75; color: var(--muted); }
.case-prose h2 {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text);
  margin: 52px 0 16px;
}
.case-prose h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin: 30px 0 10px;
}
.case-prose p { margin: 0 0 18px; max-width: 68ch; }
.case-prose b, .case-prose strong { color: var(--text); font-weight: 600; }
.case-prose i { font-style: italic; }
.case-prose ul { margin: 0 0 18px; padding-left: 20px; max-width: 68ch; }
.case-prose li { margin-bottom: 9px; }
.case-prose li::marker { color: var(--faint); }
.case-prose code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
}
.case-prose pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 0 0 22px;
}
.case-prose pre code { background: none; padding: 0; font-size: 12.5px; line-height: 1.6; }

/* diagram */
.case-diagram {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  margin: 0 0 22px;
  overflow-x: auto;
}
.case-diagram pre { background: none; border: none; padding: 0; margin: 0; }
.case-diagram .mermaid { display: flex; justify-content: center; }
.case-diagram-caption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  margin-top: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* callout */
.case-callout {
  background: var(--surface);
  border-radius: 8px;
  padding: 20px 22px;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  max-width: 68ch;
}
.case-callout-label {
  display: block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 8px;
}

/* cta + nextprev */
.case-cta {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.case-cta-text { font-size: 15px; color: var(--muted); max-width: 46ch; }
.case-cta-text b { color: var(--text); font-weight: 600; }
.case-nextprev {
  margin-top: 28px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 14px;
}
.case-nextprev a { font-weight: 500; }
.case-nextprev a { color: var(--muted); text-decoration: none; }
.case-nextprev a:hover { color: var(--accent); }

/* ---------- Drawer detail polish ---------- */
.proj-detail-scroller { padding-top: 88px; }
.drawer-meta {
  padding-bottom: 22px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}
.drawer-section-label:first-of-type { margin-top: 28px; }
.drawer-images img,
.drawer-images video,
.drawer-video-frame { border-radius: 4px; }
.drawer-prose a {
  color: var(--text) !important;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}
.drawer-prose a:hover { border-color: var(--accent); }

/* ---------- Case: reading progress + hero ---------- */
.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--line);
  z-index: 200;
}
.read-progress-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--text);
  box-shadow: 0 0 0 0.5px var(--text);
}
.case-hero { margin: 0 0 52px; }
.case-hero img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
}

/* clear sticky bar on anchor jumps */
.section, .lead, [id] { scroll-margin-top: 76px; }