/* Shared shell for ST standalone card games */
:root {
  --bg: #0b0c10;
  --bg-elev: #12141c;
  --bg-panel: #161922;
  --border: #2a3142;
  --text: #e8ecf4;
  --muted: #8b93a7;
  --accent: #7c5cff;
  --accent-2: #3dd6c6;
  --danger: #ff6b7a;
  --ok: #5ddea0;
  --warn: #f0c674;
  --user-bg: #1a2030;
  --ai-bg: #141820;
  --radius: 12px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg); color: var(--text);
  font-family: var(--font);
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent-2); }

.app {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 320px);
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  max-height: 100dvh;
  gap: 0;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto auto;
  }
  .sidebar { max-height: 38vh; border-left: none; border-top: 1px solid var(--border); }
}

.topbar {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #141824, #0f121a);
}
.topbar h1 {
  margin: 0; font-size: 15px; font-weight: 650; letter-spacing: 0.02em;
}
.topbar .meta { color: var(--muted); font-size: 12px; }
.topbar .spacer { flex: 1; }
.topbar .actions { display: flex; gap: 8px; flex-wrap: wrap; }

.btn {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 13px;
}
.btn:hover { border-color: var(--accent); }
.btn.primary {
  background: linear-gradient(135deg, #5b3fd6, #7c5cff);
  border-color: transparent;
}
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.chat {
  display: flex; flex-direction: column;
  min-height: 0;
  background: radial-gradient(1200px 500px at 10% -10%, rgba(124,92,255,0.12), transparent),
              var(--bg);
}
.log {
  flex: 1; overflow-y: auto; padding: 16px 18px 8px;
  display: flex; flex-direction: column; gap: 12px;
}
.msg {
  max-width: 920px; width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14.5px;
}
.msg.user { align-self: flex-end; background: var(--user-bg); border-color: #2d3a55; }
.msg.assistant { align-self: stretch; background: var(--ai-bg); }
.msg.system {
  align-self: center; max-width: 640px;
  background: transparent; border-style: dashed;
  color: var(--muted); font-size: 13px; text-align: center;
}
.msg .role {
  display: block; font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 6px;
}
.msg.streaming::after {
  content: "▍";
  animation: blink 1s step-end infinite;
  color: var(--accent-2);
}
@keyframes blink { 50% { opacity: 0; } }

.composer {
  border-top: 1px solid var(--border);
  padding: 10px 12px 14px;
  background: rgba(10,12,18,0.92);
  backdrop-filter: blur(8px);
}
.composer-row { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea {
  flex: 1; min-height: 52px; max-height: 160px; resize: vertical;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-elev); padding: 10px 12px;
  outline: none;
}
.composer textarea:focus { border-color: var(--accent); }
.composer .hint { margin-top: 6px; color: var(--muted); font-size: 11px; }

.sidebar {
  border-left: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex; flex-direction: column; min-height: 0;
}
.sidebar-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.sidebar-section h2 {
  margin: 0 0 8px; font-size: 12px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted); font-weight: 600;
}
.sidebar select, .sidebar input[type="text"] {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 8px;
  padding: 8px 10px;
}
.status-box {
  flex: 1; overflow: auto; padding: 12px 14px;
  font-family: var(--mono); font-size: 12px; line-height: 1.55;
  white-space: pre-wrap; color: #c9d1e3;
}
.status-box.empty { color: var(--muted); font-family: var(--font); }
.lore-tags { display: flex; flex-wrap: wrap; gap: 4px; max-height: 90px; overflow: auto; }
.tag {
  font-size: 11px; padding: 2px 7px; border-radius: 999px;
  background: rgba(124,92,255,0.15); border: 1px solid rgba(124,92,255,0.35);
  color: #cbbfff;
}
.tag.timeline { background: rgba(61,214,198,0.12); border-color: rgba(61,214,198,0.35); color: #9af0e6; }

/* Overlay setup */
.overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0,0,0,0.72);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.overlay.hidden { display: none; }
.modal {
  width: min(520px, 100%);
  background: #141824;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.55);
}
.modal h2 { margin: 0 0 8px; font-size: 18px; }
.modal p { margin: 0 0 14px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.modal label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
.modal select, .modal input {
  width: 100%; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); padding: 9px 10px;
}
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* AI settings panel */
.stg-gear {
  position: fixed; top: 10px; right: 12px; z-index: 10000;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--bg-elev);
  color: var(--accent-2); font-size: 18px;
  display: flex; align-items: center; justify-content: center;
}
.stg-panel {
  position: fixed; top: 56px; right: 12px; z-index: 9999;
  width: min(380px, calc(100vw - 24px));
  max-height: calc(100vh - 72px); overflow: auto;
  background: #12151f; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; display: none; box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.stg-panel.open { display: block; }
.stg-panel-title {
  font-size: 13px; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--accent-2);
  border-bottom: 1px solid var(--border); padding-bottom: 8px; margin-bottom: 12px;
}
.stg-field { margin-bottom: 12px; }
.stg-field label {
  display: block; font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px;
}
.stg-field input, .stg-field select {
  width: 100%; box-sizing: border-box;
  border: 1px solid var(--border); background: #0b0d14;
  border-radius: 8px; padding: 8px 10px;
}
.stg-row { display: flex; align-items: center; gap: 8px; }
.stg-row input[type=range] { flex: 1; }
.stg-muted { color: var(--warn); min-width: 36px; text-align: right; font-size: 12px; }
.stg-check { display: flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; }
.stg-btn-row { display: flex; gap: 8px; margin-top: 8px; }
.stg-btn {
  flex: 1; padding: 9px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-elev); cursor: pointer;
}
.stg-btn.primary { background: linear-gradient(135deg, #5b3fd6, #7c5cff); border-color: transparent; }
.stg-btn.ghost { color: var(--accent-2); background: transparent; }
.stg-test-result { margin-top: 8px; font-size: 12px; min-height: 16px; }
.stg-test-result.ok { color: var(--ok); }
.stg-test-result.err { color: var(--danger); }
.stg-test-result.pending { color: var(--warn); }
.stg-note { font-size: 11px; color: var(--muted); margin: 12px 0 0; line-height: 1.45; }

.error-banner {
  background: rgba(255,107,122,0.12);
  border: 1px solid rgba(255,107,122,0.4);
  color: #ffb3bb;
  padding: 8px 12px; border-radius: 8px; margin: 0 18px 8px;
  font-size: 13px; display: none;
}
.error-banner.show { display: block; }