/* How the Table works — split-screen walkthrough.
   Imported after design-system.css and page.css.
   The stage holds every state in the DOM; [data-step] on .demo-stage decides
   what shows. data-on="2 3 4" = visible on those steps. */

.how-page {
  max-width: 68rem;
  margin: 0 auto;
  padding: var(--space-section) clamp(1.5rem, 4vw, 3rem) clamp(5rem, 12vh, 8rem);
}

.how-intro { max-width: 46rem; }
.how-intro h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  line-height: 1.05;
  margin: 0 0 var(--space-4);
}
.how-lead { font-size: clamp(1rem, 1.3vw, 1.15rem); max-width: 42rem; }

/* ---- The stage ---- */
.table-demo { margin-top: clamp(2.5rem, 6vh, 4.5rem); }

.demo-stage {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 5.5rem 1fr;
  align-items: start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(1rem, 2.5vw, 2rem);
  min-height: 24rem;
}

.room { min-width: 0; }
.room-head {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  margin-bottom: var(--space-2);
}
.room-name { font-family: var(--serif); font-size: 1.05rem; }
.room-tag {
  font-size: .62rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: .1rem .55rem;
}

.screen {
  display: grid;
  gap: var(--space-2);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: var(--space-3);
  min-height: 19rem;
  align-content: start;
}

.mini-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: var(--space-2) var(--space-3);
  font-size: .84rem;
  line-height: 1.55;
  background: #fff;
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.mini-card p { margin: .35rem 0 0; }
.mini-kicker {
  font-size: .6rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--faint);
}
.thread-name { font-family: var(--serif); font-size: 1rem; }
.ask { color: var(--teal); font-style: italic; }
.stays {
  margin-top: var(--space-2);
  padding-top: var(--space-1);
  border-top: 1px dashed var(--line);
  font-size: .7rem;
  color: var(--faint);
}
.common { background: var(--sand); border-color: transparent; }
.common .mini-kicker { color: var(--maroon); }

/* Once the title has crossed, her raw words sit back a little */
.demo-stage:not([data-step="1"]) .write-a { opacity: .55; }
.demo-stage[data-step="4"] .write-b, .demo-stage[data-step="5"] .write-b { opacity: .55; }

/* ---- The table strip ---- */
.table-strip {
  position: relative;
  align-self: stretch;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: var(--space-2);
  padding-top: 2.4rem; /* clears the room headers */
}
.table-line {
  position: absolute;
  top: 2.4rem;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--line);
}
.crossing { position: relative; z-index: 1; }
.title-chip span {
  display: block;
  max-width: 9rem;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--serif);
  font-size: .72rem;
  line-height: 1.35;
  text-align: center;
  border-radius: 8px;
  padding: .5rem .7rem;
}
.flow-in { display: flex; flex-direction: column; gap: .2rem; color: var(--clay); font-size: 1rem; }
.table-caption {
  position: relative;
  z-index: 1;
  background: var(--paper);
  font-size: .62rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--faint);
  text-align: center;
  padding: .3rem 0;
  max-width: 5.2rem;
}

/* ---- Step visibility ---- */
[data-on] { display: none; }
.demo-stage[data-step="1"] [data-on~="1"],
.demo-stage[data-step="2"] [data-on~="2"],
.demo-stage[data-step="3"] [data-on~="3"],
.demo-stage[data-step="4"] [data-on~="4"],
.demo-stage[data-step="5"] [data-on~="5"] { display: block; }
.demo-stage[data-step="4"] .flow-in[data-on~="4"] { display: flex; }

/* Entrance for newly shown cards */
@media (prefers-reduced-motion: no-preference) {
  .demo-stage [data-on] { animation: card-in .7s var(--ease); }
  @keyframes card-in {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
  }
}

/* ---- Step 5 afterwards row ---- */
.afterwards {
  grid-column: 1 / -1;
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--line);
  gap: var(--space-2);
}
.demo-stage[data-step="5"] .afterwards { display: grid; grid-template-columns: repeat(3, 1fr); }
.after-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: var(--space-2) var(--space-3);
  font-size: .8rem;
  line-height: 1.5;
}

/* ---- Controls ---- */
.demo-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-3);
}
.step-btn {
  font: inherit;
  font-size: .82rem;
  font-weight: 500;
  color: var(--ink);
  background: none;
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: .5rem 1.1rem;
  cursor: pointer;
  transition: background .25s ease, opacity .25s ease;
}
.step-btn:hover:not(:disabled) { background: var(--card); }
.step-btn:disabled { opacity: .3; cursor: default; }
.step-next { background: var(--ink); color: var(--cream); border-color: var(--ink); }
.step-next:hover:not(:disabled) { background: var(--night); }
.step-dots { display: flex; gap: .55rem; }
.step-dot {
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  border: 1px solid var(--maroon);
  background: none;
  padding: 0;
  cursor: pointer;
  transition: background .25s ease;
}
.step-dot[aria-selected="true"] { background: var(--maroon); }

/* ---- Captions list ---- */
.step-captions {
  list-style: none;
  margin: clamp(2rem, 5vh, 3.5rem) 0 0;
  padding: 0;
  counter-reset: cap;
}
.step-captions li {
  counter-increment: cap;
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--line);
  transition: opacity .4s ease;
}
.step-captions li::before {
  content: "0" counter(cap);
  grid-row: 1 / span 2;
  font-family: var(--serif);
  font-size: 1rem;
  opacity: .4;
  padding-top: .2rem;
}
.step-captions h3, .step-captions p { grid-column: 2; }
.step-captions h3 { margin: 0 0 .4rem; font-size: clamp(1.05rem, 1.5vw, 1.3rem); }
.step-captions p { margin: 0; max-width: 44rem; font-size: clamp(.9rem, 1.1vw, 1rem); color: var(--maroon); }
/* When JS drives the stepper, the list becomes navigation: current step full,
   the rest receded but readable. */
.step-captions.live li { cursor: pointer; }
.step-captions.live li:not(.current) { opacity: .38; }
.step-captions.live li:hover { opacity: .75; }
.step-captions.live li.current { opacity: 1; }

/* ---- The proof: paired real screens ---- */
.screens { margin-top: clamp(3.5rem, 9vh, 6rem); }
.screens-h2 { font-size: clamp(1.8rem, 3.4vw, 2.8rem); line-height: 1.1; margin: 0 0 var(--space-3); }
.screens-lead { max-width: 44rem; font-size: clamp(.95rem, 1.2vw, 1.08rem); }

.moment { margin-top: clamp(2.5rem, 6vh, 4rem); }
.moment h3 {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin: 0 0 .5rem;
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
}
.moment-num {
  font-family: var(--sans);
  font-size: .62rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--clay-hover);
  white-space: nowrap;
}
.moment > p { max-width: 44rem; margin: 0 0 var(--space-4); font-size: clamp(.9rem, 1.1vw, 1rem); color: var(--maroon); }

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(.8rem, 2.5vw, 2rem);
  max-width: 46rem;
}
.pair figure { margin: 0; min-width: 0; }
.pair figcaption {
  font-size: .68rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: .5rem;
}
.pair a { display: block; }
.pair img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--cream);
}

.screens-note {
  margin-top: clamp(2rem, 5vh, 3rem);
  max-width: 44rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: .95rem;
  line-height: 1.5;
  color: var(--maroon);
}

/* ---- Rules + CTA ---- */
.table-rules { margin-top: clamp(3rem, 8vh, 5rem); max-width: 46rem; }
.table-rules ul { list-style: none; margin: var(--space-3) 0 0; padding: 0; }
.table-rules li {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
  font-size: clamp(.9rem, 1.1vw, 1rem);
}
.table-rules li:last-child { border-bottom: 1px solid var(--line); }

/* ---- The rest of the house ---- */
.house { margin-top: clamp(3.5rem, 9vh, 6rem); }
.house-h2 { font-size: clamp(1.8rem, 3.4vw, 2.8rem); line-height: 1.1; margin: 0 0 var(--space-3); }
.house-lead { max-width: 44rem; font-size: clamp(.95rem, 1.2vw, 1.08rem); }

.house-map {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: clamp(.8rem, 2vw, 1.5rem);
  margin-top: clamp(1.5rem, 4vh, 2.5rem);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(1rem, 2.5vw, 2rem);
}
.wing { display: grid; gap: var(--space-2); align-content: start; }
.wing-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .6rem;
  font-family: var(--serif);
  font-size: 1rem;
  margin-bottom: var(--space-1);
}
.wing-shared {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: var(--space-3);
  margin: calc(-1 * var(--space-1)) 0;
}
.house-room {
  font: inherit;
  font-size: .88rem;
  text-align: left;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  transition: border-color .3s ease, background .3s ease, opacity .3s ease;
}
.house-room:hover { border-color: var(--maroon); }
.house-room.active { background: var(--ink); border-color: var(--ink); color: var(--cream); }
.house-room.lit { border-color: var(--clay); background: var(--sand); }
/* While a room is selected, everything uninvolved steps back */
.house-map.focused .house-room:not(.active):not(.lit) { opacity: .4; }
.house-room.ghost {
  cursor: default;
  background: none;
  border-style: dashed;
  color: var(--faint);
  opacity: .55;
}
.house-map.focused .house-room.ghost { opacity: .3; }
.ghost-note { margin: var(--space-1) 0 0; font-size: .72rem; color: var(--faint); line-height: 1.5; }

.house-detail {
  margin-top: var(--space-3);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: var(--space-3) var(--space-4);
  max-width: 46rem;
}
.house-detail h3 { margin: 0 0 .4rem; font-size: 1.15rem; }
.house-detail p { margin: .3rem 0 0; font-size: .92rem; }
.house-detail .where { color: var(--maroon); }
.house-detail .where strong { color: var(--clay-hover); font-weight: 600; }

.feeds-list { list-style: none; margin: clamp(2rem, 5vh, 3rem) 0 0; padding: 0; max-width: 46rem; }
.feeds-list li {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
  font-size: clamp(.9rem, 1.1vw, 1rem);
}
.feeds-list li:last-child { border-bottom: 1px solid var(--line); }
.solo-note { margin-top: var(--space-3); font-size: .84rem; color: var(--faint); max-width: 46rem; }

@media (max-width: 46rem) {
  .house-map { grid-template-columns: 1fr; }
  .wing-shared { margin: 0; }
}

.how-cta { margin-top: clamp(3rem, 8vh, 5rem); }
.how-cta-note { margin-top: var(--space-3); font-size: .84rem; opacity: .7; }
.how-cta-note a { color: var(--clay); }

/* ---- Small screens: rooms stack, the table turns horizontal ---- */
@media (max-width: 46rem) {
  .demo-stage { grid-template-columns: 1fr; }
  .table-strip {
    padding: var(--space-2) 0;
    grid-auto-flow: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-3);
  }
  .table-line { top: 50%; bottom: auto; left: 0; right: 0; width: auto; height: 1px; }
  .table-caption { max-width: none; padding: 0 .5rem; }
  .title-chip span { max-width: none; }
  .flow-in { flex-direction: row; }
  .flow-in .arrow-left { transform: rotate(90deg); display: inline-block; }
  .flow-in .arrow-right { transform: rotate(90deg); display: inline-block; }
  .demo-stage[data-step="5"] .afterwards { grid-template-columns: 1fr; }
  .screen { min-height: 0; }
  .step-captions li { grid-template-columns: 2.2rem 1fr; }
}