/* ═══════════════════════════════════════════════════════════════
   Project case-study pages — extends styles.css tokens.
   ═══════════════════════════════════════════════════════════════ */

body { padding-left: 0; }

/* ── project nav ──────────────────────────────────────────────── */
.pnav {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-top);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 14px var(--gut);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line-soft);
}
.pnav__back {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 0.85rem var(--body); color: var(--ink-dim);
  transition: color 0.2s;
}
.pnav__back:hover { color: var(--signal); }
.pnav__links { display: flex; gap: clamp(0.9rem, 2vw, 1.75rem); font: 500 0.78rem var(--mono); }
.pnav__links a { color: var(--ink-mute); text-transform: lowercase; letter-spacing: 0.04em; transition: color 0.2s; }
.pnav__links a:hover { color: var(--ink); }
@media (max-width: 640px) { .pnav__links { display: none; } }

/* ── project hero ─────────────────────────────────────────────── */
.pjhero { max-width: var(--maxw); margin-inline: auto; padding: clamp(7rem, 14vh, 9.5rem) var(--gut) clamp(2.5rem, 6vw, 4rem); }
.pjhero__cat { font: 600 0.78rem var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--signal); margin-bottom: 1rem; }
.pjhero__h { font: 800 clamp(2.6rem, 1.6rem + 6vw, 5.5rem)/0.98 var(--display); letter-spacing: -0.03em; text-wrap: balance; }
.pjhero__one { margin-top: 1.25rem; max-width: 56ch; font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem); color: var(--ink-dim); text-wrap: pretty; line-height: 1.62; }
.pjhero__meta { display: flex; flex-wrap: wrap; gap: 0.4rem 1.75rem; margin: 1.75rem 0; }
.pjhero__meta span { font-size: 0.88rem; color: var(--ink-dim); }
.pjhero__meta b { color: var(--ink-mute); font-weight: 500; font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; margin-right: 0.5rem; }
.pjhero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ── prose section ────────────────────────────────────────────── */
.pj { max-width: var(--maxw); margin-inline: auto; padding: clamp(3rem, 7vw, 5.5rem) var(--gut); border-top: 1px solid var(--line); }
.pj__h { font: 800 clamp(1.7rem, 1.2rem + 2.4vw, 2.75rem)/1.08 var(--display); letter-spacing: -0.025em; text-wrap: balance; max-width: 22ch; }
.pj__lead { margin-top: 1rem; max-width: 64ch; color: var(--ink-dim); font-size: 1.08rem; line-height: 1.65; text-wrap: pretty; }
.pj__lead + .pj__lead { margin-top: 0.85rem; }
.pj__grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 880px) { .pj__grid { grid-template-columns: 1fr; gap: 2rem; } }

.pj__list { display: flex; flex-direction: column; gap: 0.85rem; margin-top: 1.5rem; }
.pj__list li { display: flex; gap: 0.85rem; color: var(--ink-dim); font-size: 0.98rem; line-height: 1.55; }
.pj__list li::before { content: "▍"; color: var(--signal-2); flex: none; }
.pj__list b { color: var(--ink); font-weight: 600; }

/* product tour */
.tour { display: flex; flex-direction: column; gap: clamp(1.25rem, 3vw, 2rem); margin-top: 2rem; }
.tour__item {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(18rem, 0.7fr);
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg-1);
  overflow: hidden;
}
.tour__item:nth-child(even) { grid-template-columns: minmax(18rem, 0.7fr) minmax(0, 1.3fr); }
.tour__item:nth-child(even) .tour__shot { order: 2; border-left: 1px solid var(--line-soft); border-right: 0; }
.tour__item:nth-child(even) .tour__body { order: 1; }
.tour__item--text { display: block; }
.tour__item--text .tour__body { max-width: 58rem; }
.tour__shot {
  border-right: 1px solid var(--line-soft);
  background: var(--bg-2);
  min-height: clamp(16rem, 30vw, 27rem);
}
.tour__shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
}
.tour__body { padding: clamp(1.25rem, 3vw, 2rem); align-self: center; }
.tour__k {
  font: 600 0.7rem var(--mono);
  color: var(--signal);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}
.tour__body h3 {
  font: 700 1.15rem var(--display);
  letter-spacing: -0.015em;
  margin-bottom: 0.4rem;
}
.tour__body p {
  color: var(--ink-dim);
  font-size: 0.92rem;
  line-height: 1.55;
}
.tour__bullets { display: flex; flex-direction: column; gap: 0.45rem; margin-top: 1rem; }
.tour__bullets li { color: var(--ink-dim); font-size: 0.9rem; line-height: 1.45; display: flex; gap: 0.55rem; }
.tour__bullets li::before { content: "·"; color: var(--signal); font-weight: 800; }
.workflow-shot {
  margin-top: 2rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--bg-1);
}
.workflow-shot img { width: 100%; height: auto; display: block; }
@media (max-width: 820px) {
  .tour__item,
  .tour__item:nth-child(even) { grid-template-columns: 1fr; }
  .tour__item:nth-child(even) .tour__shot { order: 1; border-left: 0; }
  .tour__item:nth-child(even) .tour__body { order: 2; }
  .tour__shot { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .tour__shot img { min-height: auto; }
}

/* ── architecture flow ────────────────────────────────────────── */
.flow { display: flex; flex-direction: column; gap: 0; margin-top: 0.5rem; }
.flow__step {
  display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem;
  padding: 1.1rem 0; border-top: 1px solid var(--line); position: relative;
}
.flow__step:last-child { border-bottom: 1px solid var(--line); }
.flow__n { font: 700 1.1rem var(--mono); color: var(--signal); padding-top: 0.1rem; }
.flow__b h3 { font: 700 1.1rem var(--display); letter-spacing: -0.015em; margin-bottom: 0.3rem; }
.flow__b p { color: var(--ink-dim); font-size: 0.94rem; line-height: 1.55; max-width: 52ch; }
.flow__step::after {
  content: ""; position: absolute; left: 1.15rem; top: 100%; width: 1px; height: 0;
  background: var(--line-soft);
}
.flow__step:not(:last-child)::after { height: 0.6rem; }

/* ── live demo ────────────────────────────────────────────────── */
.demo {
  border: 1px solid var(--line); border-radius: 14px; background: var(--bg-1);
  padding: clamp(1.25rem, 3vw, 2rem);
}
.demo__head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.demo__title { font: 700 1.05rem var(--display); letter-spacing: -0.01em; }
.demo__hint { font: 500 0.78rem var(--mono); color: var(--ink-mute); }

.demo__form {
  display: grid; grid-template-columns: 1.6fr 0.9fr 0.9fr auto; gap: 0.6rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 640px) { .demo__form { grid-template-columns: 1fr 1fr; } .demo__form .btn { grid-column: 1 / -1; } }
.demo__form input, .demo__form select {
  font: 500 0.9rem var(--body); color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 9px;
  padding: 0.65rem 0.75rem; width: 100%;
}
.demo__form input::placeholder { color: var(--ink-mute); }
.demo__form input:focus-visible, .demo__form select:focus-visible { border-color: var(--signal); }

.demo__list { display: flex; flex-direction: column; gap: 0.6rem; }
.demo__row {
  border: 1px solid var(--line); border-radius: 11px; background: var(--bg);
  padding: 0.85rem 1rem; cursor: pointer;
  transition: border-color 0.25s var(--e-out), transform 0.25s var(--e-out);
}
.demo__row:hover { border-color: color-mix(in oklab, var(--signal) 40%, var(--line)); }
.demo__row.is-open { border-color: var(--signal); }
.demo__rank { font: 700 0.95rem var(--mono); color: var(--signal); width: 1.6rem; flex: none; }
.demo__row-head { display: flex; align-items: center; gap: 0.85rem; }
.demo__row-title { font: 600 0.98rem var(--body); flex: 1; }
.demo__row-score { font: 600 0.85rem var(--mono); color: var(--ink-dim); }
.demo__row-del { color: var(--ink-mute); font-size: 1.1rem; line-height: 1; padding: 2px 4px; transition: color 0.2s; }
.demo__row-del:hover { color: var(--signal); }

.demo__bar { display: flex; height: 6px; border-radius: 4px; overflow: hidden; margin-top: 0.6rem; background: var(--line-soft); }
.demo__bar span { display: block; height: 100%; transition: width 0.5s var(--e-out); }
.demo__bar .b-urg { background: var(--signal); }
.demo__bar .b-imp { background: var(--ok); }
.demo__bar .b-eff { background: var(--signal-2); }

.demo__why {
  margin-top: 0.85rem; padding-top: 0.85rem; border-top: 1px solid var(--line-soft);
  display: none; font-size: 0.88rem; color: var(--ink-dim); line-height: 1.6;
}
.demo__row.is-open .demo__why { display: block; }
.demo__why dl { display: grid; grid-template-columns: auto 1fr auto; gap: 0.35rem 0.75rem; align-items: baseline; font: 500 0.82rem var(--mono); margin-top: 0.5rem; }
.demo__why dt { color: var(--ink-mute); }
.demo__why dd { color: var(--ink); text-align: right; }
.demo__why dd.b-urg-t { color: var(--signal); }
.demo__why dd.b-imp-t { color: var(--ok); }
.demo__why dd.b-eff-t { color: var(--signal-2); }

.demo__legend { display: flex; gap: 1.25rem; flex-wrap: wrap; margin-top: 1.25rem; font: 500 0.78rem var(--mono); color: var(--ink-mute); }
.demo__legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.demo__legend i { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }
.demo__legend .b-urg { background: var(--signal); }
.demo__legend .b-imp { background: var(--ok); }
.demo__legend .b-eff { background: var(--signal-2); }

/* ── impact metrics ───────────────────────────────────────────── */
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); gap: clamp(1.25rem, 3vw, 2rem); }
.metric { border-top: 1px solid var(--line); padding-top: 1rem; }
.metric__v { font: 800 clamp(2rem, 1.6rem + 1.4vw, 2.75rem) var(--display); letter-spacing: -0.02em; color: var(--ink); }
.metric__k { color: var(--ink-dim); font-size: 0.92rem; margin-top: 0.35rem; }

/* ── final cta ────────────────────────────────────────────────── */
.pjend { text-align: center; }
.pjend__actions { display: flex; flex-wrap: wrap; gap: 0.85rem; justify-content: center; margin-top: 1.75rem; }

/* ── classify demo (MuniGo) ───────────────────────────────────── */
.classify__form { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.classify__form input {
  flex: 1; min-width: 14rem;
  font: 500 0.95rem var(--body); color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 9px;
  padding: 0.7rem 0.9rem;
}
.classify__form input::placeholder { color: var(--ink-mute); }
.classify__form input:focus-visible { border-color: var(--signal); }

.classify__result {
  margin-top: 1.5rem; border: 1px solid var(--box-c, var(--signal)); border-radius: 12px;
  background: var(--bg); padding: 1.1rem 1.25rem;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr)); gap: 0.9rem 1.5rem;
}
.classify__field { display: flex; flex-direction: column; gap: 0.3rem; }
.classify__k { font: 500 0.68rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-mute); }
.classify__v { font: 700 1.05rem var(--display); letter-spacing: -0.01em; }
.classify__v--pri-high { color: var(--signal); }
.classify__v--pri-medium { color: var(--signal-2); }
.classify__v--pri-low { color: var(--ok); }
.classify__conf { font: 600 0.85rem var(--mono); color: var(--ink-dim); }
.classify__examples { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.classify__examples button {
  font: 500 0.82rem var(--body); color: var(--ink-dim);
  border: 1px solid var(--line); border-radius: 100px; padding: 0.4rem 0.85rem;
  background: var(--bg-1); cursor: pointer; transition: border-color 0.2s, color 0.2s;
}
.classify__examples button:hover { border-color: var(--signal); color: var(--ink); }

/* ── planner demo (LifeOS) ────────────────────────────────────── */
.planner__form { display: grid; grid-template-columns: 1.6fr 0.8fr 0.9fr auto; gap: 0.6rem; }
@media (max-width: 640px) { .planner__form { grid-template-columns: 1fr 1fr; } .planner__form .btn { grid-column: 1 / -1; } }
.planner__form input, .planner__form select {
  font: 500 0.9rem var(--body); color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 9px;
  padding: 0.65rem 0.75rem; width: 100%;
}
.planner__form input::placeholder { color: var(--ink-mute); }
.planner__form input:focus-visible, .planner__form select:focus-visible { border-color: var(--signal); }

.timeline2 { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 1.5rem; }
.tblock {
  display: grid; grid-template-columns: 5rem 1fr auto; align-items: center; gap: 1rem;
  border: 1px solid var(--line); border-radius: 10px; background: var(--bg);
  padding: 0.7rem 1rem;
}
.tblock__time { font: 600 0.82rem var(--mono); color: var(--ink-mute); }
.tblock__title { font: 600 0.95rem var(--body); }
.tblock__cat { font: 500 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.06em; padding: 3px 9px; border-radius: 100px; border: 1px solid var(--line); white-space: nowrap; }
.tblock__cat--deep { color: var(--signal); border-color: color-mix(in oklab, var(--signal) 40%, var(--line)); }
.tblock__cat--admin { color: var(--signal-2); border-color: color-mix(in oklab, var(--signal-2) 40%, var(--line)); }
.tblock__cat--health { color: var(--ok); border-color: color-mix(in oklab, var(--ok) 40%, var(--line)); }
.tblock--break { opacity: 0.65; }
.planner__overflow { margin-top: 1rem; font: 500 0.85rem var(--mono); color: var(--ink-mute); }