/* Asker room rail. Thin icons, or names when html.rail-open. */
:root {
  --rail-w: 0px;
  --rail-bg: #111111;
  --rail-line: #2a2a2a;
  --rail-gold: #e0c98a;
}

@media (min-width: 641px) {
  :root { --rail-w: 4rem; }
  html.rail-open { --rail-w: 15rem; }
  body { padding-left: var(--rail-w); }
}

#roomRail {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  box-sizing: border-box;
  background: var(--rail-bg);
  color: #d4d4d8;
  font-family: "Segoe UI", system-ui, sans-serif;
}

@media (min-width: 641px) {
  #roomRail {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 50;
    width: var(--rail-w);
    padding: 0.55rem 0.4rem 0.7rem;
    border-right: 1px solid var(--rail-line);
    transition: width 0.18s ease;
    overflow: hidden;
  }
}

#roomRail .rail-head,
#roomRail .rail-top,
#roomRail .rail-foot,
#roomRail .rail-session,
#roomRail .rail-marks {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

#roomRail .rail-head {
  align-items: center;
  margin-bottom: 0.2rem;
}

html.rail-open #roomRail .rail-head {
  flex-direction: row;
  justify-content: space-between;
  width: 100%;
}

html:not(.rail-open) #roomRail .rail-toggle {
  order: -1;
}

#roomRail .rail-spacer {
  flex: 1 1 auto;
  min-height: 0.75rem;
}

#roomRail .rail-foot {
  flex: 0 0 auto;
}

/* Desktop: the foot is the three marks. History, Share, and Ask stay on the phone. */
@media (min-width: 641px) {
  #roomRail .rail-session {
    display: none !important;
  }
}

#roomRail .rail-marks {
  margin-top: 0.35rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--rail-line);
}

#roomRail .rail-item,
#roomRail .rail-mark,
#roomRail .rail-toggle {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
  min-height: 2.5rem;
  margin: 0;
  padding: 0.3rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: #d4d4d8;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-align: left;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

html:not(.rail-open) #roomRail .rail-item,
html:not(.rail-open) #roomRail .rail-mark,
html:not(.rail-open) #roomRail .rail-toggle {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

html:not(.rail-open) #roomRail .rail-label,
html:not(.rail-open) #roomRail .history-dock-label {
  display: none;
}

#roomRail .rail-item:hover,
#roomRail .rail-item:focus-visible,
#roomRail .rail-mark:hover,
#roomRail .rail-mark:focus-visible,
#roomRail .rail-toggle:hover,
#roomRail .rail-toggle:focus-visible {
  background: rgba(255, 255, 255, 0.06);
  color: #f4f4f5;
  border-color: transparent;
  outline: none;
}

#roomRail .rail-item.is-current {
  background: rgba(255, 255, 255, 0.1);
  color: #fafafa;
  border-color: transparent;
}

#roomRail .rail-icon,
#roomRail .history-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

#roomRail .rail-mark img {
  width: 28px;
  height: 28px;
  display: block;
  object-fit: contain;
}

#roomRail .rail-toggle,
#roomRail .rail-search {
  width: 2.5rem;
  min-height: 2.5rem;
  flex: 0 0 auto;
  justify-content: center;
  padding: 0;
  border-radius: 10px;
  color: #d4d4d8;
}

#roomRail .rail-search .rail-label {
  display: none;
}

html:not(.rail-open) #roomRail .rail-item,
html:not(.rail-open) #roomRail .rail-mark {
  width: 2.5rem;
  min-height: 2.5rem;
  margin-inline: auto;
  border-radius: 10px;
}

.rail-tip {
  position: fixed;
  z-index: 70;
  transform: translateY(-50%);
  max-width: 18rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid #3f3f46;
  border-radius: 8px;
  background: #2a2a2a;
  color: #f4f4f5;
  font: 600 0.75rem/1.35 "Segoe UI", system-ui, sans-serif;
  pointer-events: none;
  white-space: nowrap;
}

.rail-tip[hidden] {
  display: none !important;
}

/* Phone hangar: session buttons only, pinned under the composer while chatting. */
@media (max-width: 640px) {
  body:not(.has-rail) #roomRail {
    display: none;
  }

  body:not(.has-rail).is-chatting {
    --rail-session-h: 3.25rem;
  }

  body:not(.has-rail).is-chatting #roomRail {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    z-index: 45;
    width: 100%;
    height: var(--rail-session-h);
    flex-direction: row;
    align-items: center;
    padding: 0.2rem 0.45rem;
    border-right: 0;
    border-top: 1px solid var(--rail-line);
    background: var(--bg, #181818);
    overflow: hidden;
  }

  body:not(.has-rail) #roomRail .rail-head,
  body:not(.has-rail) #roomRail .rail-top,
  body:not(.has-rail) #roomRail .rail-spacer,
  body:not(.has-rail) #roomRail .rail-marks,
  body:not(.has-rail) #roomRail .rail-toggle {
    display: none !important;
  }

  body:not(.has-rail).is-chatting #roomRail .rail-foot,
  body:not(.has-rail).is-chatting #roomRail .rail-session {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.35rem;
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
  }

  body:not(.has-rail).is-chatting #roomRail .rail-label,
  body:not(.has-rail).is-chatting #roomRail .history-dock-label {
    display: inline !important;
    font-size: 0.62rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  body:not(.has-rail).is-chatting #roomRail .rail-item,
  body:not(.has-rail).is-chatting #roomRail .history-dock-btn {
    width: auto;
    justify-content: flex-start;
    padding: 0.35rem 0.5rem;
    border-radius: 6px;
    background: #2a2a2a;
  }

  /* Door pages: one icon row at the top. No second footer. */
  body.has-rail #roomRail {
    position: sticky;
    top: 0;
    z-index: 40;
    flex-direction: row;
    align-items: center;
    width: 100%;
    height: auto;
    padding: 0.35rem 0.4rem;
    border-right: 0;
    border-bottom: 1px solid var(--rail-line);
    overflow-x: auto;
  }

  body.has-rail #roomRail .rail-spacer,
  body.has-rail #roomRail .rail-label {
    display: none !important;
  }

  body.has-rail #roomRail .rail-head,
  body.has-rail #roomRail .rail-top,
  body.has-rail #roomRail .rail-foot,
  body.has-rail #roomRail .rail-marks {
    flex-direction: row;
    align-items: center;
    margin: 0;
    padding: 0;
    border: 0;
  }

  body.has-rail #roomRail .rail-item,
  body.has-rail #roomRail .rail-mark,
  body.has-rail #roomRail .rail-toggle {
    width: 2.5rem;
    flex: 0 0 auto;
    justify-content: center;
    padding: 0;
  }
}