/* Artbin design system — from the Portfolio Papi teardown:
   pure black, white-at-opacity hierarchy, stock serif at weight 400,
   the work as the only color on screen. */

:root, :root[data-theme="dark"] {
  --serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --bg: #000;
  --bg-nav: rgba(0,0,0,.92);
  --solid-bg: #fff;
  --solid-fg: #000;
  --w100: rgba(255,255,255,1);
  --w80: rgba(255,255,255,.8);
  --w70: rgba(255,255,255,.7);
  --w60: rgba(255,255,255,.6);
  --w40: rgba(255,255,255,.4);
  --w25: rgba(255,255,255,.25);
  --hair: rgba(255,255,255,.12);
  --fill: rgba(255,255,255,.06);
}

/* Light mode — ink-on-paper. The warm ground echoes the drawings' own #f2efe8. */
:root[data-theme="light"] {
  --bg: #f3f0e8;
  --bg-nav: rgba(243,240,232,.9);
  --solid-bg: #1a1613;
  --solid-fg: #f3f0e8;
  --w100: rgba(24,20,16,1);
  --w80: rgba(24,20,16,.82);
  --w70: rgba(24,20,16,.7);
  --w60: rgba(24,20,16,.56);
  --w40: rgba(24,20,16,.42);
  --w25: rgba(24,20,16,.24);
  --hair: rgba(24,20,16,.14);
  --fill: rgba(24,20,16,.05);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { background: var(--bg); }
body {
  background: var(--bg);
  color: var(--w80);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--w100); color: var(--bg); }

.serif { font-family: var(--serif); font-weight: 400; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; color: var(--w100); }

.label {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--w60);
}
.meta { font-size: 12px; color: var(--w40); }
.ghost { color: var(--w25); }

/* ---- nav ---- */
nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 28px;
  padding: 0 28px; height: 60px;
  background: var(--bg-nav); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hair);
}
nav .wordmark { font-family: var(--serif); font-size: 23px; color: var(--w100); margin-right: 8px; }
nav .wordmark span { color: var(--w25); }
nav .links { display: flex; gap: 22px; }
nav .links a { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--w60); padding: 6px 0; white-space: nowrap; }
nav .links a:hover { color: var(--w100); }
nav .links a.active { color: var(--w100); border-bottom: 1px solid var(--w100); }
nav .spacer { flex: 1; }
.theme-toggle { min-width: 62px; text-align: center; }
html { transition: background .2s ease; }
.only-mobile { display: none; }
@media (max-width: 700px) {
  nav { gap: 10px; padding: 0 12px; }
  nav .links { gap: 12px; }
  nav .wordmark { font-size: 20px; }
  .only-desktop { display: none !important; }   /* theme, settings, logout — reachable via Settings page */
  .only-mobile { display: inline-flex; }
  .navpush { padding: 5px 11px; }
  .navmsg { display: inline-flex; align-items: center; padding: 4px; }
  .navmsg .badge { position: absolute; top: -2px; right: -4px; margin: 0; }
  .fab.only-mobile { display: inline-flex; }
}

/* Mobile "push a project" floating button — the primary create action off the crowded top bar. */
.fab {
  position: fixed; bottom: 22px; right: 18px; z-index: 60;
  width: 54px; height: 54px; border-radius: 50%;
  display: none; align-items: center; justify-content: center;
  background: var(--solid-bg); color: var(--solid-fg);
  font-size: 30px; line-height: 1; padding-bottom: 3px;
  border: 1px solid var(--bg);
  box-shadow: 0 3px 14px rgba(0,0,0,.22);
}
.fab:active { opacity: .85; }

/* ---- buttons ---- */
.btn {
  display: inline-block;
  white-space: nowrap;
  background: none; border: 1px solid var(--w40); color: var(--w100);
  border-radius: 999px; padding: 8px 18px;
  font-size: 12px; letter-spacing: .06em;
  transition: border-color .15s, opacity .15s;
}
.btn:hover { border-color: var(--w100); }
.btn.solid { background: var(--solid-bg); color: var(--solid-fg); border-color: var(--solid-bg); }
.btn.solid:hover { opacity: .85; }
.btn.small { padding: 5px 13px; font-size: 11px; }
.btn.quiet { border-color: transparent; color: var(--w60); }
.btn.quiet:hover { color: var(--w100); }
.btn[disabled] { opacity: .4; cursor: default; }
.btn.on { background: var(--solid-bg); color: var(--solid-fg); border-color: var(--solid-bg); }

/* ---- layout ---- */
.page { max-width: 1080px; margin: 0 auto; padding: 40px 28px 120px; }
.page.narrow { max-width: 720px; }
.cols { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 56px; }
@media (max-width: 900px) { .cols { grid-template-columns: 1fr; } .rail { display: none; } }

.pagehead { margin: 18px 0 36px; }
.pagehead h1 { font-size: 42px; line-height: 1.1; margin-top: 6px; }

/* ---- avatar ---- */
.av {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--fill); color: var(--w80);
  font-size: 12px; letter-spacing: .04em;
  border: 1px solid var(--hair);
  flex: none;
}
.av.lg { width: 72px; height: 72px; font-size: 24px; font-family: var(--serif); }
.av.ring { border-color: var(--w25); }

/* ---- feed ---- */
.feedrow { padding: 22px 0; border-bottom: 1px solid var(--hair); }
.feedrow .who { display: flex; gap: 12px; align-items: baseline; margin-bottom: 10px; }
.feedrow .who .av { align-self: center; }
.statement { font-family: var(--serif); font-size: 19px; color: var(--w100); line-height: 1.35; }
.statement a:hover { border-bottom: 1px solid var(--w40); }
.statement .ghost { color: var(--w40); }

.pcard { margin-top: 14px; display: block; }
.pcard .cover { aspect-ratio: 16/10; overflow: hidden; border-radius: 3px; background: var(--fill); }
.pcard .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.pcard:hover .cover img { transform: scale(1.015); }
.pcard .caption { display: flex; justify-content: space-between; align-items: baseline; padding-top: 10px; }
.pcard .caption .t { font-family: var(--serif); font-size: 17px; color: var(--w100); }

.minirow { display: flex; gap: 14px; margin-top: 12px; align-items: center; }
.minirow .thumb { width: 92px; height: 60px; object-fit: cover; border-radius: 2px; flex: none; }
.minirow .t { font-family: var(--serif); font-size: 15px; color: var(--w100); }

.critquote { border-left: 1px solid var(--w25); padding-left: 14px; margin-top: 10px; color: var(--w70); font-size: 13px; }

/* ---- rail ---- */
.rail section { margin-bottom: 40px; }
.rail .label { display: block; margin-bottom: 14px; }
.railrow { display: flex; gap: 12px; align-items: center; padding: 9px 0; }
.railrow .nm { color: var(--w100); font-size: 13px; }
.railrow .sub { font-size: 11px; color: var(--w40); }
.railrow .spacer { flex: 1; }

/* ---- browse grid ---- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 30px; }
.searchrow { margin-bottom: 14px; }
.chip {
  background: none; border: 1px solid var(--hair); color: var(--w60);
  border-radius: 999px; padding: 6px 14px; font-size: 12px;
}
.chip:hover { color: var(--w100); border-color: var(--w40); }
.chip.on { background: var(--solid-bg); color: var(--solid-fg); border-color: var(--solid-bg); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px 24px; }
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
.grid .pcard { margin: 0; }
.grid .pcard .cover { aspect-ratio: 4/3; }
.grid .pcard .caption { display: block; }
.grid .pcard .caption .t { display: block; font-size: 16px; }
.grid .pcard .caption .meta { display: block; margin-top: 2px; }

/* ---- inputs ---- */
input, textarea, select {
  width: 100%;
  background: none; border: 1px solid var(--hair); border-radius: 3px;
  color: var(--w100); font: inherit; padding: 10px 12px;
  transition: border-color .15s;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--w60); }
input::placeholder, textarea::placeholder { color: var(--w25); }
select { appearance: none; background: var(--bg); }
select option { background: var(--bg); }
.field { margin-bottom: 18px; }
.field .label { display: block; margin-bottom: 7px; }
.search { max-width: 340px; }

/* ---- tabs ---- */
.tab { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--w40); padding: 0 0 12px; border-bottom: 2px solid transparent; }
.tab:hover { color: var(--w80); }
.tab.on { color: var(--w100); border-bottom-color: var(--w100); }

/* ---- nav messages badge ---- */
.navmsg { position: relative; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--w60); white-space: nowrap; }
.navmsg:hover, .navmsg.active { color: var(--w100); }
.badge { display: inline-flex; align-items: center; justify-content: center; min-width: 16px; height: 16px; padding: 0 4px; margin-left: 5px; border-radius: 999px; background: var(--solid-bg); color: var(--solid-fg); font-size: 10px; letter-spacing: 0; vertical-align: middle; }

/* ---- messages ---- */
.msgwrap { display: grid; grid-template-columns: 300px minmax(0,1fr); gap: 0; border: 1px solid var(--hair); border-radius: 6px; overflow: hidden; min-height: 560px; }
.threadlist { border-right: 1px solid var(--hair); overflow-y: auto; max-height: 640px; }
.threaditem { display: flex; gap: 12px; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--hair); }
.threaditem:hover { background: var(--fill); }
.threaditem.on { background: var(--fill); }
.threaditem .tmeta { min-width: 0; }
.threaditem .tn { color: var(--w100); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.threaditem .tl { font-size: 12px; color: var(--w40); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--solid-bg); display: inline-block; }
.convo { display: flex; flex-direction: column; max-height: 640px; }
.convohead { display: flex; gap: 12px; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--hair); }
.convohead .nm { font-family: var(--serif); font-size: 17px; }
.bubbles { flex: 1; overflow-y: auto; padding: 22px 20px; display: flex; flex-direction: column; gap: 10px; }
/* Messages read as normal ink on the page — no backlit/inverted bubble.
   Sender is shown by alignment: mine right + subtle fill, theirs left + outline. */
.bubble { max-width: 76%; padding: 10px 14px; border-radius: 14px; font-size: 14px; line-height: 1.45; position: relative; color: var(--w100); border: 1px solid var(--hair); }
.bubble.them { align-self: flex-start; background: none; border-bottom-left-radius: 4px; }
.bubble.me { align-self: flex-end; background: var(--fill); border-bottom-right-radius: 4px; }
.bubble .bt { display: block; font-size: 10px; color: var(--w40); margin-top: 4px; }
.composer { display: flex; gap: 10px; padding: 14px 16px; border-top: 1px solid var(--hair); }
.composer input { flex: 1; }
@media (max-width: 700px) {
  .msgwrap { grid-template-columns: 1fr; }
  .threadlist { max-height: 200px; }
}

/* ---- tutors ---- */
.tutorrow { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--hair); max-width: 900px; }
.tutorrow .nm { font-family: var(--serif); font-size: 26px; color: var(--w100); }
.tutorrow .rate { font-family: var(--serif); font-size: 26px; color: var(--w100); text-align: right; }
.tutorrow .rate span { font-size: 14px; color: var(--w40); }
.tutorrow .samples { display: flex; gap: 8px; margin-top: 14px; }
.tutorrow .samples img { width: 86px; height: 58px; object-fit: cover; border-radius: 2px; opacity: .9; }
.tutorrow .samples a:hover img { opacity: 1; }
.tutorrow .actions { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

/* ---- profile ---- */
.masthead { padding: 30px 0 40px; border-bottom: 1px solid var(--hair); margin-bottom: 40px; }
.masthead .row { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.masthead h1 { font-size: 56px; line-height: 1.05; }
.masthead .bio { max-width: 560px; margin-top: 14px; color: var(--w70); font-size: 15px; }
.masthead .stats { display: flex; gap: 26px; margin-top: 18px; align-items: center; flex-wrap: wrap; }
.masthead .stats b { color: var(--w100); font-weight: 400; font-family: var(--serif); font-size: 18px; }
.statbtn { background: none; border: none; padding: 0; color: inherit; font: inherit; cursor: pointer; }
.statbtn:hover b { border-bottom: 1px solid var(--w40); }
.statbtn:hover .meta { color: var(--w60); }
.netlist { max-height: 46vh; overflow-y: auto; margin: 6px 0; }
.netlist .railrow { border-bottom: 1px solid var(--hair); }
.netlist .railrow:hover { background: var(--fill); }
.tutorcard {
  margin-top: 26px; padding: 20px 22px; border: 1px solid var(--hair); border-radius: 4px;
  display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap;
}
.tutorcard .rate { font-family: var(--serif); font-size: 30px; color: var(--w100); }
.tutorcard .rate span { font-size: 13px; color: var(--w40); }

/* ---- project page ---- */
.projhead { margin: 24px 0 30px; }
.projhead h1 { font-size: 48px; line-height: 1.08; }
.projhead .credit { margin-top: 10px; font-size: 14px; color: var(--w60); }
.projhead .credit a { color: var(--w100); border-bottom: 1px solid var(--w25); }
.projimgs img { width: 100%; border-radius: 3px; margin-bottom: 6px; }
.credit-line { font-size: 11px; color: var(--w40); letter-spacing: .02em; margin: 0 0 18px; }
.projbody { max-width: 640px; font-size: 15px; color: var(--w80); margin: 8px 0 34px; }
.actionsrow { display: flex; gap: 12px; align-items: center; margin: 26px 0; }

.crit { display: flex; gap: 14px; padding: 18px 0; border-top: 1px solid var(--hair); }
.crit .body { color: var(--w80); font-size: 14px; margin-top: 3px; }
.critform textarea { min-height: 80px; }
.critform { margin-top: 10px; padding-top: 22px; border-top: 1px solid var(--hair); }

/* ---- landing ---- */
.hero { padding: 80px 0 60px; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 60px; align-items: center; }
.hero .art { display: grid; gap: 18px; }
.hero .art .pcard { margin: 0; }
.hero .art .pcard .cover { aspect-ratio: 16/9; }
.hero .art .pcard:last-child { margin-left: 12%; margin-right: -6%; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; padding: 60px 0 40px; } .hero .art { display: none; } }
.hero .label { margin-bottom: 22px; display: block; }
.hero h1 { font-size: clamp(48px, 9vw, 96px); line-height: 1.02; letter-spacing: -.01em; }
.hero h1 .ghost { color: var(--w25); }
.hero p { max-width: 520px; margin-top: 26px; font-size: 16px; color: var(--w70); }
.hero .cta { margin-top: 36px; display: flex; gap: 14px; align-items: center; }
.beats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; padding: 60px 0; border-top: 1px solid var(--hair); }
@media (max-width: 720px) { .beats { grid-template-columns: 1fr; } }
.beats h3 { font-size: 24px; margin: 10px 0 8px; }
.beats p { color: var(--w60); font-size: 13px; }
.wall { padding: 50px 0 30px; border-top: 1px solid var(--hair); }

/* ---- push form ---- */
.previews { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.previews img { width: 120px; height: 84px; object-fit: cover; border-radius: 3px; }
.dropzone {
  border: 1px dashed var(--w25); border-radius: 4px; padding: 34px;
  text-align: center; color: var(--w40); cursor: pointer; transition: border-color .15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--w60); color: var(--w60); }

/* ---- overlay / auth ---- */
#overlay:empty { display: none; }
#overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.88); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.panel {
  width: 100%; max-width: 420px; background: var(--bg);
  border: 1px solid var(--hair); border-radius: 6px; padding: 34px;
  max-height: 90vh; overflow-y: auto;
}
.panel h2 { font-size: 30px; margin-bottom: 6px; }
.panel .sub { color: var(--w40); font-size: 13px; margin-bottom: 24px; }
.panel .alt { margin-top: 18px; font-size: 12px; color: var(--w40); text-align: center; }
.panel .alt a { color: var(--w80); border-bottom: 1px solid var(--w25); cursor: pointer; }
.panel .close { position: absolute; }
.err { color: var(--w100); background: var(--fill); border: 1px solid var(--hair); border-left: 2px solid var(--w100); padding: 9px 12px; font-size: 12px; margin-bottom: 14px; border-radius: 2px; display: none; }
.err.show { display: block; }

/* ---- toast ---- */
#toast {
  position: fixed; left: 50%; top: 74px; transform: translateX(-50%) translateY(-16px);
  background: var(--w100); color: var(--bg); font-size: 13px;
  padding: 10px 20px; border-radius: 999px;
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s;
  z-index: 200;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- misc ---- */
.empty { padding: 70px 0; text-align: center; color: var(--w40); }
.empty .serif { font-size: 26px; color: var(--w60); display: block; margin-bottom: 8px; }
.fade-in { animation: fadeIn .35s ease both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
footer { border-top: 1px solid var(--hair); margin-top: 80px; padding: 30px 28px; display: flex; gap: 20px; align-items: baseline; }
footer .wordmark { font-family: var(--serif); font-size: 18px; color: var(--w60); }