/* Screen layouts. Desktop-first (D5): the three-pane loom is designed AT
   desktop width; tablet folds the right pane; phone is single-pane with a
   tab bar. Breakpoints key off the viewport. */

/* ---- Auth / gate screens ---- */
.gate {
  min-height: 100%;
  display: grid; place-items: center;
  padding: var(--sp-6);
  padding-bottom: 12vh; /* optical center: lift the card above true center */
}
.gate-card { width: min(26rem, 100%); }
.gate-note { margin-bottom: var(--sp-5); }
.gate-foot { text-align: center; margin-top: var(--sp-4); }
.wordmark {
  font-family: var(--font-display);
  font-size: var(--fs-5);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: center;
  line-height: 1.05;
  margin-bottom: var(--sp-2);
}
.wordmark .thread-line {
  display: block; height: 2px; width: 60%;
  margin: var(--sp-3) auto 0;
  background: linear-gradient(90deg, transparent, var(--thread), transparent);
}
.tagline { text-align: center; color: var(--linen-dim); font-style: italic; margin-bottom: var(--sp-6); }

/* ---- Worlds screen ---- */
.worlds-wrap { max-width: 64rem; margin: 0 auto; padding: var(--sp-6); }
.screen-head { display: flex; align-items: baseline; gap: var(--sp-4); flex-wrap: wrap; }
.worlds-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr)); gap: var(--sp-5); margin-top: var(--sp-5); align-items: start; }
.world-card h2 { margin-bottom: var(--sp-2); }
.world-card .blurb { color: var(--linen-dim); font-size: var(--fs-1); min-height: 3.2em; }

/* ---- Play screen: the loom ---- */
.loom-grid {
  height: 100%;
  display: grid;
  grid-template-columns: 15.5rem minmax(0, 1fr) 17rem;
  grid-template-rows: 100%;
  gap: 0;
}
.pane { min-width: 0; overflow-y: auto; }
.pane-left { border-right: 1px solid var(--edge); padding: var(--sp-5); background: var(--well); }
.pane-right { border-left: 1px solid var(--edge); padding: var(--sp-5); background: var(--well); }
.pane-center { display: grid; grid-template-rows: minmax(0, 1fr) auto; }
.stream { overflow-y: auto; padding: var(--sp-6) var(--sp-6) var(--sp-4); }
.composer {
  border-top: 1px solid var(--edge);
  padding: var(--sp-4) var(--sp-6);
  display: flex; gap: var(--sp-3); align-items: flex-end;
  background: var(--panel);
}
.composer textarea {
  flex: 1; resize: none; min-height: 2.6em; max-height: 9em;
}
.zone-title { font-family: var(--font-display); font-size: var(--fs-3); }
.zone-here { color: var(--thread); font-weight: 700; }
.pane-actions { margin-top: var(--sp-4); display: grid; gap: var(--sp-2); }
.pane h3 { font-family: var(--font-ui); font-size: var(--fs-0); letter-spacing: 0.12em; text-transform: uppercase; color: var(--linen-dim); margin: var(--sp-5) 0 var(--sp-2); font-weight: 700; }
.pane h3:first-child { margin-top: 0; }
.exit-list, .presence-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-2); }
.exit-list button { width: 100%; text-align: left; }
.presence-list li { font-family: var(--font-ui); color: var(--linen-dim); }
.presence-list li.me { color: var(--thread); }

/* Phone tab bar exists in DOM always; hidden on wide screens (stability). */
.tabbar { display: none; }

/* ---- Narrow desktop / tablet: slimmer panes; the character pane stays ---- */
@media (max-width: 64rem) {
  .loom-grid { grid-template-columns: 13rem minmax(0, 1fr) 14rem; }
  .pane-left, .pane-right { padding: var(--sp-4); }
}

/* ---- Phone / narrow: single pane + tab bar ---- */
@media (max-width: 56rem) {
  .loom-grid { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) auto; }
  .pane-left, .pane-right { display: none; }
  .loom-grid[data-tab="zone"] .pane-left { display: block; border-right: 0; }
  .loom-grid[data-tab="zone"] .pane-center { display: none; }
  .loom-grid[data-tab="you"] .pane-right { display: block; border-left: 0; }
  .loom-grid[data-tab="you"] .pane-center { display: none; }
  .tabbar {
    display: flex; border-top: 1px solid var(--edge); background: var(--panel);
  }
  .tabbar button {
    flex: 1; padding: var(--sp-3); border: 0; background: transparent;
    color: var(--linen-dim); font-weight: 700;
  }
  .tabbar button[aria-pressed="true"] { color: var(--thread); }
  .stream { padding: var(--sp-4); }
  .composer { padding: var(--sp-3) var(--sp-4); }
}

/* ---- Data tables (Loom) ---- */
.table-scroll { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-family: var(--font-ui); font-size: var(--fs-1); }
table.data th, table.data td { text-align: left; padding: var(--sp-2) var(--sp-3); border-bottom: 1px solid var(--edge); }
table.data th { font-size: var(--fs-0); text-transform: uppercase; letter-spacing: 0.08em; color: var(--linen-dim); }

/* Screens toggle. */
.screen { display: none; height: 100%; }
.screen.active { display: block; }
/* Screens whose layout needs a non-block display declare it at .screen.active
   specificity or higher — a single-class display rule LOSES to .screen.active
   (the v0.2.1 login bug; see DECISIONS D16 postmortem). */
.screen.active.gate { display: grid; }
.screen.active.loom-screen {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto; /* loom grid + (phone) tab bar */
}
.loom-grid { min-height: 0; }

/* ---- The Cockpit (M1): left section nav + content. Config surfaces use the
   ember accent family (style guide: shared color families by category). ---- */
.cockpit {
  height: 100%;
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
}
.cockpit-nav {
  border-right: 1px solid var(--edge);
  background: var(--well);
  padding: var(--sp-5);
  display: flex; flex-direction: column; gap: var(--sp-4);
  overflow-y: auto;
}
.loom-mark { color: var(--accent-config); }
.nav-foot { margin-top: auto; display: grid; gap: var(--sp-2); }
.cockpit-sections { display: grid; gap: var(--sp-1); }
.cockpit-sections button {
  text-align: left; border: 1px solid transparent; background: transparent;
  color: var(--linen-dim); padding: 0.5em 0.7em; border-radius: var(--radius);
  font-weight: 500; cursor: pointer;
  transition: background-color 100ms, color 100ms, border-color 100ms;
}
.cockpit-sections button:hover { background: var(--panel-2); }
.cockpit-sections button[aria-pressed="true"] {
  background: var(--panel-2); color: var(--accent-config);
  border-color: var(--edge); font-weight: 700;
}
.cockpit-content { overflow-y: auto; padding: var(--sp-6); }
.cockpit-content h1 { color: var(--accent-config); margin-bottom: var(--sp-5); }
.cockpit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: var(--sp-5); align-items: start; }
.identity { font-family: var(--font-ui); font-size: var(--fs-0); color: var(--linen-dim); }
.identity b { color: var(--thread); }
.toolbar { display: flex; gap: var(--sp-3); align-items: center; flex-wrap: wrap; margin-bottom: var(--sp-4); }
.toolbar .input { max-width: 18rem; }

@media (max-width: 44rem) {
  .cockpit { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto minmax(0, 1fr); }
  .cockpit-nav { border-right: 0; border-bottom: 1px solid var(--edge); flex-direction: row; flex-wrap: wrap; align-items: center; }
  .cockpit-sections { grid-auto-flow: column; grid-auto-columns: max-content; overflow-x: auto; }
}