/* ============================================================
   chat.css — the AI race-engineer chat pane (left) and the
   LLM-driven graph annotation flags. Reuses the analysis.css
   design tokens (--chrome, --line, --ink, --accent, --mono).
   ============================================================ */

/* ---- shell: the workbench fills the window; chat floats over it ---- */
/* 100dvh tracks iPadOS Safari's dynamic viewport (chrome show/hide); vh fallback. */
#rtv-shell { width: 100vw; height: 100vh; height: 100dvh; overflow: hidden; background: #000; }

/* #viewport keeps analysis.css's fixed full-window fill (position:fixed;inset:0)
   so the MoTeC stage scales to the whole window. The chat is a floating overlay
   docked bottom-right, so it no longer steals width from the workbench. */

/* #viewport centres #app with flexbox; without this the flex container shrinks
   the 1920×1080 stage below its natural width BEFORE the JS transform:scale()
   runs, so it never fills the screen. Pin it to natural size — only scale() sizes it. */
#viewport > #app { flex: 0 0 auto; }

/* ---- chat pane: floating card, bottom-right ---- */
#chat-pane {
  position: fixed; z-index: 40;
  right: calc(18px + env(safe-area-inset-right));
  bottom: calc(18px + env(safe-area-inset-bottom));
  width: 320px; max-width: calc(100vw - 32px);
  height: 440px; max-height: calc(100dvh - 32px - env(safe-area-inset-bottom));
  display: flex; flex-direction: column;
  box-sizing: border-box; overflow: hidden;
  background: linear-gradient(180deg, #101316 0%, #0c0e10 100%);
  border: 1px solid var(--line, #34393e);
  border-radius: 14px;
  box-shadow: 0 18px 50px rgba(0,0,0,.6), 0 2px 8px rgba(0,0,0,.5);
  color: var(--ink, #d4d8da);
  font-family: var(--sans, "Segoe UI", system-ui, sans-serif);
}
/* collapsed: hide the panel, show the launcher bubble */
#chat-pane.collapsed { display: none; }

/* ---- launcher bubble (shown while chat is minimised) ---- */
#chat-launcher {
  position: fixed; z-index: 40;
  right: calc(18px + env(safe-area-inset-right));
  bottom: calc(18px + env(safe-area-inset-bottom));
  display: none; align-items: center; gap: 10px;
  padding: 11px 16px 11px 13px; cursor: pointer;
  background: linear-gradient(180deg, #1a1d20 0%, #101316 100%);
  border: 1px solid var(--line, #34393e); border-radius: 26px;
  box-shadow: 0 12px 34px rgba(0,0,0,.55), 0 0 0 3px rgba(255,146,52,.10);
  color: var(--ink, #d4d8da); font-family: var(--sans, "Segoe UI", system-ui, sans-serif);
}
#chat-launcher.show { display: inline-flex; }
#chat-launcher:hover { border-color: var(--accent, #ff9234); }
#chat-launcher .cl-label { font-size: 13px; font-weight: 700; letter-spacing: .05em; }
#chat-launcher .cl-label b { color: var(--accent, #ff9234); font-weight: 800; margin-left: 5px; }

.chat-head {
  position: relative;
  padding: 14px 16px 12px; border-bottom: 1px solid var(--line, #34393e);
  background: var(--chrome, #1a1d20);
  border-radius: 14px 14px 0 0;
}
#chat-collapse {
  position: absolute; top: 12px; right: 12px;
  width: 26px; height: 26px; border-radius: 7px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  background: #14181b; border: 1px solid var(--line, #34393e);
  color: var(--ink-dim, #8b9296); font-size: 18px; line-height: 1; font-weight: 700;
}
#chat-collapse:hover { color: var(--ink, #d4d8da); border-color: var(--accent, #ff9234); }
.chat-title { display: flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 700; letter-spacing: .06em; }
.chat-title b { color: var(--accent, #ff9234); font-weight: 800; margin-left: 5px; }
.chat-glyph {
  width: 15px; height: 15px; border-radius: 3px; transform: rotate(45deg);
  background: var(--accent, #ff9234); box-shadow: 0 0 0 3px rgba(255,146,52,.16);
}
.chat-sub { margin-top: 5px; font-size: 11px; color: var(--ink-dim, #8b9296); font-family: var(--mono, monospace); }

.chat-scope {
  padding: 8px 16px; font-size: 11px; color: var(--ink-dim, #8b9296);
  background: #0b0d0f; border-bottom: 1px solid var(--line-soft, #22272b);
}
.chat-scope b { color: var(--ink, #d4d8da); font-family: var(--mono, monospace); }

/* ---- messages ---- */
.chat-messages { flex: 1 1 auto; overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; padding: 16px 14px; display: flex; flex-direction: column; gap: 12px; }
.chat-messages::-webkit-scrollbar { width: 8px; }
.chat-messages::-webkit-scrollbar-thumb { background: #2b3034; border-radius: 4px; }

.msg { max-width: 92%; font-size: 13px; line-height: 1.5; border-radius: 12px; padding: 10px 13px; white-space: normal; }
.msg.user {
  align-self: flex-end; background: var(--accent, #ff9234); color: #170f05;
  border-bottom-right-radius: 4px; font-weight: 500;
}
.msg.coach {
  align-self: flex-start; background: var(--chrome-2, #222629);
  border: 1px solid var(--line, #34393e); border-bottom-left-radius: 4px;
}
.msg.coach.refusal { border-color: rgba(255,210,59,.4); background: #201d10; }
.msg.system { align-self: center; font-size: 11px; color: var(--ink-faint, #5b6266); background: transparent; padding: 2px; }
.msg.error { align-self: flex-start; background: #2a1416; border: 1px solid rgba(255,70,58,.4); color: #ffb3ad; }

.msg.coach strong { color: #fff; }
.msg.coach em { color: var(--accent, #ff9234); font-style: normal; font-family: var(--mono, monospace); font-size: 12px; }
.msg.coach ul { margin: 6px 0 2px; padding-left: 4px; list-style: none; }
.msg.coach li { margin: 4px 0; padding-left: 12px; position: relative; }
.msg.coach li::before { content: "▸"; position: absolute; left: 0; color: var(--accent, #ff9234); }
.msg.coach p { margin: 6px 0; }

/* corner chips: click to jump the graph cursor there */
.msg-corners { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.corner-chip {
  font-family: var(--mono, monospace); font-size: 11px; font-weight: 600;
  padding: 3px 9px; border-radius: 20px; cursor: pointer;
  background: #14181b; border: 1px solid var(--line, #34393e); color: var(--ink, #d4d8da);
  display: inline-flex; align-items: center; gap: 6px; transition: transform .08s, background .12s;
}
.corner-chip:hover { transform: translateY(-1px); background: #1b2023; border-color: var(--accent, #ff9234); }
.corner-chip .cc-dot { width: 7px; height: 7px; border-radius: 50%; }
.corner-chip .cc-dot.high { background: #ff463a; }
.corner-chip .cc-dot.medium { background: #ffd23b; }
.corner-chip .cc-dot.low { background: #39d46a; }
.corner-chip .cc-gain { color: var(--ink-dim, #8b9296); font-weight: 400; }

.typing { display: inline-flex; gap: 4px; align-items: center; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-dim, #8b9296); animation: tdot 1s infinite ease-in-out; }
.typing i:nth-child(2) { animation-delay: .15s; }
.typing i:nth-child(3) { animation-delay: .30s; }
@keyframes tdot { 0%, 60%, 100% { opacity: .3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

/* ---- suggestions ---- */
.chat-suggest { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 8px; }
.suggest-chip {
  font-size: 11px; padding: 5px 10px; border-radius: 16px; cursor: pointer;
  background: #14181b; border: 1px solid var(--line-soft, #22272b); color: var(--ink-dim, #8b9296);
}
.suggest-chip:hover { color: var(--ink, #d4d8da); border-color: var(--accent, #ff9234); }

/* ---- input ---- */
.chat-input { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line, #34393e); background: var(--chrome, #1a1d20); }
#chat-input {
  flex: 1; resize: none; max-height: 120px;
  background: #0b0d0f; color: var(--ink, #d4d8da); border: 1px solid var(--line, #34393e);
  border-radius: 9px; padding: 9px 11px; font-size: 13px; font-family: inherit; line-height: 1.4;
}
#chat-input:focus { outline: none; border-color: var(--accent, #ff9234); }
/* iOS/iPadOS zooms the page when focusing an input whose text is < 16px.
   Bump to 16px on touch devices so tapping the field doesn't zoom the app. */
@media (pointer: coarse) { #chat-input { font-size: 16px; } }
#chat-send {
  flex: 0 0 40px; width: 40px; border: 0; border-radius: 9px; cursor: pointer;
  background: var(--accent, #ff9234); color: #170f05; font-size: 18px; font-weight: 700;
}
#chat-send:disabled { opacity: .4; cursor: default; }
.chat-foot { padding: 6px 14px 10px; font-size: 10px; color: var(--ink-faint, #5b6266); text-align: center; }
.chat-foot a { color: var(--accent, #ff9234); text-decoration: none; }
.chat-foot a:hover { text-decoration: underline; }

/* ============================================================
   LLM annotation flags over the Time/Distance graph.
   Positioned in layout px via I2Graphs.getLayout().xOf(distance).
   ============================================================ */
#llm-gmarkers { position: absolute; inset: 0; pointer-events: none; z-index: 6; overflow: hidden; }
.llm-flag {
  position: absolute; top: 34px; transform: translateX(-50%);
  pointer-events: auto; cursor: pointer;
  font-family: var(--mono, monospace); font-size: 10.5px; font-weight: 700;
  padding: 2px 7px; border-radius: 5px; white-space: nowrap;
  background: #170f06; color: var(--accent, #ff9234);
  border: 1px solid var(--accent, #ff9234);
  box-shadow: 0 2px 8px rgba(0,0,0,.5);
}
.llm-flag::after {
  content: ""; position: absolute; left: 50%; top: 100%; width: 1px; height: 999px;
  margin-left: -.5px; background: var(--accent, #ff9234); opacity: .28;
}
.llm-flag.high { color: #ff6a5e; border-color: #ff463a; background: #1e0e0c; }
.llm-flag.high::after { background: #ff463a; opacity: .30; }
.llm-flag.medium { color: #ffd23b; border-color: #d9a92e; background: #1c1808; }
.llm-flag.medium::after { background: #ffd23b; opacity: .26; }
.llm-flag.low { color: #4ade7e; border-color: #39d46a; background: #0d1a11; }
.llm-flag.low::after { background: #39d46a; opacity: .24; }
.llm-flag:hover { transform: translateX(-50%) translateY(-1px); }
.llm-flag .lf-gain { font-weight: 400; opacity: .8; margin-left: 4px; }

/* hover note tooltip */
.llm-flag .lf-note {
  display: none; position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  width: 200px; white-space: normal; background: #0b0d0f; color: var(--ink, #d4d8da);
  border: 1px solid var(--line, #34393e); border-radius: 7px; padding: 7px 9px;
  font-family: var(--sans, sans-serif); font-size: 11px; font-weight: 400; line-height: 1.45;
  box-shadow: 0 6px 18px rgba(0,0,0,.6); z-index: 8;
}
.llm-flag:hover .lf-note { display: block; }

@media (max-width: 640px) {
  #chat-pane {
    right: 10px; width: calc(100vw - 20px);
    bottom: calc(10px + env(safe-area-inset-bottom));
    height: auto; top: calc(10px + env(safe-area-inset-top));
    max-height: none;
  }
  #chat-launcher {
    right: calc(10px + env(safe-area-inset-right));
    bottom: calc(10px + env(safe-area-inset-bottom));
  }
}