/* ==========================================================================
   romulolebre.com — styles
   Monochrome. Two typefaces (Geist, Geist Mono). One accent: the text color.
   ========================================================================== */

:root {
  --bg: #fafaf9;
  --bg-raised: #ffffff;
  --fg: #0b0b0b;
  --fg-2: #3d3d3b;
  --muted: #73736f;
  --faint: #a8a8a3;
  --line: #e7e7e4;
  --line-strong: #d4d4cf;
  --hover: #f1f1ef;
  --shadow: 0 1px 0 rgba(0,0,0,.02), 0 8px 24px -8px rgba(0,0,0,.12), 0 24px 64px -24px rgba(0,0,0,.18);
  --scrim: rgba(250,250,249,.72);

  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --w: 680px;          /* content column */
  --w-wide: 1040px;    /* page frame on large screens */
  --label: 168px;      /* section label gutter on large screens */
  --gutter: clamp(16px, 5vw, 32px);

  --ease: cubic-bezier(.2, .7, .2, 1);
  --radius: 8px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0a0a;
    --bg-raised: #121212;
    --fg: #ededec;
    --fg-2: #c4c4c1;
    --muted: #8b8b87;
    --faint: #565653;
    --line: #1e1e1d;
    --line-strong: #2c2c2a;
    --hover: #151514;
    --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 16px 48px -12px rgba(0,0,0,.8);
    --scrim: rgba(10,10,10,.72);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-raised: #121212;
  --fg: #ededec;
  --fg-2: #c4c4c1;
  --muted: #8b8b87;
  --faint: #565653;
  --line: #1e1e1d;
  --line-strong: #2c2c2a;
  --hover: #151514;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 16px 48px -12px rgba(0,0,0,.8);
  --scrim: rgba(10,10,10,.72);
  color-scheme: dark;
}

/* ---------- base ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 15px/1.6 var(--sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
@media (min-width: 768px) { body { font-size: 16px; } }

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

a { color: inherit; text-decoration: none; }
img, video, iframe { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 1.5px solid var(--fg); outline-offset: 3px; border-radius: 4px; }

.mono { font-family: var(--mono); font-size: 12px; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip {
  position: absolute; left: 12px; top: -40px; z-index: 100;
  background: var(--fg); color: var(--bg); padding: 6px 10px; border-radius: 6px;
  font: 500 13px var(--sans);
}
.skip:focus { top: 12px; }

/* ---------- frame ---------- */

.page {
  width: 100%;
  max-width: calc(var(--w) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- top controls ---------- */

.chrome {
  position: fixed; inset: 0 0 auto 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px var(--gutter);
  pointer-events: none;
}
.chrome > * { pointer-events: auto; }
.chrome::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--scrim);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  backdrop-filter: blur(12px) saturate(1.2);
  border-bottom: 1px solid var(--line);
  opacity: 0; transition: opacity .3s var(--ease);
}
.chrome.is-scrolled::before { opacity: 1; }

.mark {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 13px var(--sans); color: var(--fg);
}
.mark svg { width: 24px; height: 24px; }
.mark-name { opacity: 0; transform: translateY(4px); transition: opacity .3s var(--ease), transform .3s var(--ease); }
.chrome.is-scrolled .mark-name, .chrome.is-inner .mark-name { opacity: 1; transform: none; }

.tools { display: flex; align-items: center; gap: 6px; }
.tool {
  height: 30px; min-width: 30px; padding: 0 9px;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--line); border-radius: 7px;
  background: var(--bg-raised);
  color: var(--muted);
  font: 500 12px var(--mono);
  transition: color .15s, border-color .15s, background .15s;
}
.tool:hover { color: var(--fg); border-color: var(--line-strong); }
.tool svg { width: 15px; height: 15px; }
.tool kbd { font: inherit; }
@media (max-width: 520px) { .tool .kbd-hint { display: none; } }

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

.hero { padding: clamp(96px, 18vh, 168px) 0 clamp(28px, 5vh, 44px); }

.hero-mark { display: block; width: 40px; height: 40px; margin: 0 0 24px -4px; color: var(--fg); }
.hero-mark svg { width: 100%; height: 100%; }
/* The Cell: fill grows from the bottom to the share of the month that has passed. */
.mark-fill { transform-box: fill-box; transform-origin: 50% 100%; transform: scaleY(var(--fill, .5)); }
.anim .hero-mark .mark-fill { animation: cell-fill 1.1s var(--ease) .2s backwards; }
@media (prefers-reduced-motion: reduce) { .anim .hero-mark .mark-fill { animation: none; } }
@keyframes cell-fill { from { transform: scaleY(0); } }

.hero h1 {
  margin: 0;
  font: 600 clamp(28px, 4.6vw, 40px)/1.05 var(--sans);
  letter-spacing: -0.035em;
}
.hero .role {
  margin: 6px 0 0;
  font: 400 clamp(28px, 4.6vw, 40px)/1.1 var(--sans);
  letter-spacing: -0.035em;
  color: var(--faint);
}
.hero .bio {
  margin: 28px 0 0;
  max-width: 34em;
  color: var(--fg-2);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.6;
}

.status {
  margin-top: 28px;
  display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--bg-raised);
  color: var(--muted);
}
.status b { color: var(--fg); font-weight: 500; }
.status .sep { color: var(--faint); }

.pulse { position: relative; width: 8px; height: 8px; flex: none; }
.pulse::before, .pulse::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--fg);
}
.pulse::after { animation: ping 2s var(--ease) infinite; opacity: .5; }
@keyframes ping { 0% { transform: scale(1); opacity: .5; } 80%, 100% { transform: scale(2.6); opacity: 0; } }

/* ---------- sections ---------- */

/* One column: label on top, list below. ~48px between groups. */
.section { padding: 20px 0; }
@media (min-width: 768px) { .section { padding: 24px 0; } }
.section { scroll-margin-top: 56px; }
@media (hover: none) { .hide-touch { display: none; } }
.section-label {
  margin: 0 0 10px;
  display: flex; align-items: baseline; gap: 10px;
  font: 500 12px var(--mono); color: var(--muted); text-transform: none;
}
.section-label .idx { color: var(--faint); }

/* ---------- ship log ---------- */

.shiplog { border-top: 1px solid var(--line); padding-top: 18px; }
.shiplog-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.shiplog-title {
  margin: 0;
  font: 500 clamp(20px, 3vw, 26px)/1.2 var(--sans);
  letter-spacing: -0.025em;
}
.caret {
  display: inline-block; width: .5em; height: .95em; margin-left: 3px;
  background: var(--fg); vertical-align: -0.1em;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.cells {
  margin: 22px 0 0; padding: 0; list-style: none;
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 6px;
}
@media (max-width: 420px) { .cells { gap: 4px; } }
.cell { display: flex; flex-direction: column; align-items: center; gap: 8px; min-width: 0; }
.cell-box {
  display: block;
  width: 100%; aspect-ratio: 1; border-radius: 5px;
  border: 1px dashed var(--line-strong);
  background: transparent;
  position: relative;
  transition: transform .2s var(--ease), background .2s;
}
.cell-m { font: 500 10.5px var(--mono); color: var(--faint); }
.cell.is-live .cell-box { background: var(--fg); border: 1px solid var(--fg); }
.cell.is-live .cell-m { color: var(--fg); }
.cell.is-building .cell-box {
  border: 1px solid var(--fg);
  background: repeating-linear-gradient(-45deg, transparent 0 3px, var(--line-strong) 3px 4px);
  overflow: hidden;
}
.cell.is-building .cell-box::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: var(--progress, 50%);
  background: var(--fg); opacity: .9;
  transition: height 1s var(--ease);
}
.cell.is-building .cell-m { color: var(--fg); }
.cell.is-planned .cell-box { border: 1px solid var(--line-strong); }
.cell.is-planned .cell-box::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 4px; height: 4px; margin: -2px 0 0 -2px;
  border-radius: 50%; background: var(--muted);
}
.cell.is-planned .cell-m { color: var(--muted); }
.cell a, .cell .cell-btn { width: 100%; display: block; border-radius: 5px; }
.cell a:hover .cell-box, .cell .cell-btn:hover .cell-box { transform: translateY(-2px); }

.shiplog-foot {
  margin-top: 16px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  color: var(--muted);
}

/* ---------- list rows ---------- */

.rows { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.row { border-bottom: 1px solid var(--line); }
.row > a, .row > .row-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 20px; row-gap: 2px;
  padding: 14px 0;
}
.row > a::before {
  content: ""; position: absolute; inset: 0 -12px; border-radius: 8px;
  background: var(--hover); opacity: 0; transition: opacity .15s;
  z-index: -1;
}
.row > a:hover::before { opacity: 1; }
.row-title { font-weight: 500; letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; min-width: 0; flex-wrap: wrap; }
.row-line { grid-column: 1; color: var(--muted); font-size: 14px; line-height: 1.5; }
.row-meta {
  grid-column: 2; grid-row: 1;
  display: flex; align-items: baseline; gap: 16px; justify-content: flex-end;
  white-space: nowrap; color: var(--muted);
}
.row-link { color: var(--muted); transition: color .15s; }
.row > a:hover .row-link { color: var(--fg); }
.row-year { color: var(--faint); min-width: 4.5em; text-align: right; }
.arrow { display: inline-block; transition: transform .2s var(--ease); }
.row > a:hover .arrow { transform: translate(2px, -2px); }
.row > a:hover .arrow-r { transform: translateX(3px); }

.n { color: var(--faint); font: 500 12px var(--mono); }
/* Single-line rows (Elsewhere): icon · label · note … link ↗ */
.row-inline > a, .row-inline > .row-inner { align-items: center; padding: 11px 0; }
.row-inline .row-title { flex-wrap: nowrap; white-space: nowrap; }
.row-note { margin-left: 4px; color: var(--muted); font-weight: 400; font-size: 14px; letter-spacing: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
@media (max-width: 640px) {
  .row-inline .row-meta { margin-top: 2px; }
  .row-inline:has(.row-icon) .row-meta { padding-left: 24px; }
  /* Courses keep the date on the right, even on phones */
  .row-dated > a, .row-dated > .row-inner { grid-template-columns: minmax(0, 1fr) auto; }
  .row-dated .row-meta { grid-column: 2; grid-row: 1; margin-top: 0; }
}
.row-icon { display: inline-flex; width: 16px; height: 16px; color: var(--muted); transition: color .15s; }
.row-icon svg { width: 100%; height: 100%; }
.row > a:hover .row-icon { color: var(--fg); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 1px 7px; border-radius: 999px;
  border: 1px solid var(--line-strong);
  font: 500 11px/18px var(--mono); color: var(--muted);
}
.chip .pulse { width: 6px; height: 6px; }
.chip-quiet { border-style: dashed; color: var(--faint); }
.dots::after { content: "…"; display: inline-block; width: 1em; text-align: left; animation: dots 1.4s steps(4) infinite; overflow: hidden; vertical-align: bottom; }
@keyframes dots { 0% { width: 0; } 100% { width: 1em; } }

/* mobile: meta drops below */
@media (max-width: 640px) {
  .row > a, .row > .row-inner { grid-template-columns: minmax(0, 1fr); }
  .row-meta { grid-column: 1; grid-row: auto; justify-content: flex-start; margin-top: 6px; font-size: 11.5px; }
  .row-year { min-width: 0; text-align: left; }
  .row > a::before { inset: 0 -8px; }
}

/* ---------- hover preview ---------- */

.peek {
  position: fixed; left: 0; top: 0; z-index: 30;
  width: 320px; aspect-ratio: 16 / 10;
  border-radius: 10px; overflow: hidden;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  pointer-events: none;
  opacity: 0;
  transform: translate3d(var(--x, 0), var(--y, 0), 0) scale(.94);
  transition: opacity .18s var(--ease), transform .18s var(--ease);
}
.peek.is-on { opacity: 1; transform: translate3d(var(--x, 0), var(--y, 0), 0) scale(1); }
.peek img { width: 100%; height: 100%; object-fit: cover; }
@media (hover: none), (max-width: 900px) { .peek { display: none; } }

/* ---------- about ---------- */

.prose p { margin: 0 0 1em; color: var(--fg-2); }
.prose p:last-child { margin-bottom: 0; }
.about { border-top: 1px solid var(--line); padding-top: 16px; }
.about .available { margin-top: 18px; display: inline-flex; gap: 8px; align-items: center; color: var(--muted); }

/* ---------- footer ---------- */

.foot {
  margin-top: 32px; padding: 24px 0 calc(40px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  display: grid; gap: 14px;
  color: var(--muted);
}
.foot-sign { font: 500 clamp(18px, 2.4vw, 22px)/1.3 var(--sans); letter-spacing: -0.02em; color: var(--fg); max-width: 26em; }
.foot-sign .num { font-variant-numeric: tabular-nums; }
.foot-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.foot-meta a:hover { color: var(--fg); }

/* ---------- toast ---------- */

.toast {
  position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom)); z-index: 70;
  transform: translate(-50%, 12px); opacity: 0;
  padding: 8px 14px; border-radius: 999px;
  background: var(--fg); color: var(--bg);
  font: 500 12px var(--mono);
  transition: opacity .2s var(--ease), transform .2s var(--ease);
  pointer-events: none;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- command palette ---------- */

.cmdk {
  position: fixed; inset: 0; z-index: 60;
  display: none; align-items: flex-start; justify-content: center;
  padding: min(18vh, 140px) 16px 16px;
  background: var(--scrim);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.cmdk.is-open { display: flex; animation: fade .16s var(--ease); }
@keyframes fade { from { opacity: 0; } }
.cmdk-panel {
  width: 100%; max-width: 560px;
  background: var(--bg-raised);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: rise .2s var(--ease);
}
@keyframes rise { from { transform: translateY(8px) scale(.98); opacity: 0; } }
.cmdk-input-wrap { display: flex; align-items: center; gap: 10px; padding: 0 16px; border-bottom: 1px solid var(--line); }
.cmdk-input-wrap svg { width: 16px; height: 16px; color: var(--faint); flex: none; }
.cmdk-input {
  flex: 1; min-width: 0; height: 52px; border: 0; outline: 0; background: transparent;
  font: 400 16px var(--sans); color: var(--fg);
}
.cmdk-input::placeholder { color: var(--faint); }
.cmdk-list { list-style: none; margin: 0; padding: 6px; max-height: min(52vh, 420px); overflow-y: auto; overscroll-behavior: contain; }
.cmdk-group { padding: 10px 10px 4px; font: 500 11px var(--mono); color: var(--faint); }
.cmdk-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 9px 10px; border-radius: 8px;
  font-size: 14px; cursor: pointer;
}
.cmdk-item > span:first-child { min-width: 0; }
.cmdk-item .hint { flex: none; max-width: 45%; color: var(--faint); font: 400 12px var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmdk-item[aria-selected="true"] { background: var(--hover); }
.cmdk-item[aria-selected="true"] .hint { color: var(--muted); }
.cmdk-empty { padding: 24px 12px; text-align: center; color: var(--muted); font-size: 14px; }
.cmdk-foot { display: flex; gap: 14px; padding: 9px 14px; border-top: 1px solid var(--line); color: var(--faint); }
.cmdk-foot kbd { font: inherit; padding: 0 5px; border: 1px solid var(--line-strong); border-radius: 4px; margin-right: 4px; color: var(--muted); }
@media (max-width: 520px) { .cmdk { padding-top: 64px; } .cmdk-foot { display: none; } }

/* ---------- entrance ---------- */

/* Entrance only runs while <html> has .anim (added by JS, removed after 1.6s as a safety net). */
.anim .rise { opacity: 0; transform: translateY(8px); animation: in .6s var(--ease) forwards; animation-delay: calc(var(--i, 0) * 50ms); }
@keyframes in { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .anim .rise { opacity: 1; transform: none; animation: none; }
  .pulse::after, .caret, .dots::after { animation: none; }
}

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

.progress { position: fixed; inset: 0 0 auto 0; height: 1.5px; z-index: 50; background: var(--fg); transform-origin: 0 50%; transform: scaleX(0); }

.case { padding-top: clamp(96px, 14vh, 140px); }
.case-head { max-width: var(--w); margin: 0 auto; }
.case-kicker { display: flex; flex-wrap: wrap; gap: 4px 10px; color: var(--muted); margin: 0 0 18px; }
.case-kicker .sep { color: var(--faint); }
.case h1 {
  margin: 0;
  font: 600 clamp(28px, 5vw, 44px)/1.08 var(--sans);
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.case-summary { margin: 18px 0 0; color: var(--fg-2); font-size: clamp(16px, 1.8vw, 18px); max-width: 36em; }
.tags { margin: 22px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }

.metrics {
  max-width: var(--w-wide); margin: 48px auto 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
@media (min-width: 760px) { .metrics { grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr)); } }
.metric { padding: 18px 16px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metric-v { font: 500 clamp(22px, 3.2vw, 32px)/1.1 var(--sans); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.metric-l { margin-top: 6px; color: var(--muted); font-size: 13px; line-height: 1.4; }

.cover { max-width: var(--w-wide); margin: 32px auto 0; }

.body { max-width: var(--w); margin: 56px auto 0; }
.body > * { margin: 0 0 1.1em; }
.body p { color: var(--fg-2); font-size: clamp(15.5px, 1.6vw, 17px); line-height: 1.7; }
.body h2 {
  margin: 2.6em 0 .8em;
  display: flex; align-items: baseline; gap: 12px;
  font: 600 clamp(19px, 2.2vw, 22px)/1.3 var(--sans); letter-spacing: -0.02em;
}
.body h2 .n { font-weight: 500; }
.body ul, .body ol { padding-left: 1.2em; color: var(--fg-2); font-size: clamp(15.5px, 1.6vw, 17px); line-height: 1.7; }
.body li { margin: 0 0 .6em; padding-left: .2em; }
.body li::marker { color: var(--faint); }
.body li strong { color: var(--fg); font-weight: 500; }
.body blockquote {
  margin: 2em 0; padding: 0 0 0 20px; border-left: 1.5px solid var(--fg);
  font: 500 clamp(20px, 2.8vw, 26px)/1.3 var(--sans); letter-spacing: -0.02em; color: var(--fg);
}

.figure, .video { margin: 2.2em 0; }
@media (min-width: 900px) {
  .figure.wide, .video { margin-left: calc((var(--w) - min(var(--w-wide), 100vw - var(--gutter) * 2)) / 2); margin-right: calc((var(--w) - min(var(--w-wide), 100vw - var(--gutter) * 2)) / 2); }
}
.frame {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line);
  background: var(--hover);
}
.frame img { width: 100%; height: auto; }
.figure figcaption { margin-top: 10px; color: var(--muted); }
.video .frame { aspect-ratio: 16 / 9; }
.video iframe { width: 100%; height: 100%; border: 0; }

.case-foot { max-width: var(--w); margin: 80px auto 0; }
.next {
  display: block; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.next .mono { color: var(--muted); }
.next-title { margin-top: 6px; font: 500 clamp(18px, 2.4vw, 22px)/1.3 var(--sans); letter-spacing: -0.02em; display: flex; justify-content: space-between; gap: 16px; }
.next:hover .arrow-r { transform: translateX(4px); }
.next .arrow-r { transition: transform .2s var(--ease); }

/* ---------- 404 ---------- */
.lost { min-height: 100svh; display: grid; place-content: center; text-align: center; gap: 14px; padding: 24px; }
.lost h1 { margin: 0; font: 600 clamp(28px, 5vw, 40px)/1.1 var(--sans); letter-spacing: -0.035em; }
.lost a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }