/* ================================================
   LifeSim Demo — UI Stylesheet
   Design language adapted from SimulationView.vue
   ================================================ */

:root {
  --bg:          #f8fafc;
  --surface:     #ffffff;
  --border:      #e2e8f0;
  --border-soft: rgba(226, 232, 240, 0.7);
  --text:        #0f172a;
  --text-dim:    #334155;
  --text-muted:  #94a3b8;
  --purple:      #7c3aed;
  --purple-soft: rgba(124, 58, 237, 0.1);
  --green:       #16a34a;
  --green-soft:  rgba(22, 163, 74, 0.1);
  --grad:        linear-gradient(135deg, #7c3aed 0%, #6366f1 100%);
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.12);
  --radius:      8px;
  --radius-lg:   12px;
  --transition:  all 0.15s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; scroll-behavior: smooth; }
body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  height: 100%;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.25; color: var(--text); }
p { color: var(--text-dim); }
a { text-decoration: none; color: inherit; }

/* ---- Navbar ---- */
.navbar {
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar-brand .logo {
  width: 32px;
  height: 32px;
  background: var(--grad);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.navbar-nav {
  display: flex;
  gap: 4px;
  list-style: none;
  margin-left: 12px;
}

.nav-link {
  padding: 5px 12px;
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover  { background: var(--bg); color: var(--text); }
.nav-link.active { background: var(--purple-soft); color: var(--purple); }

.navbar-spacer { flex: 1; }

.lang-toggle-btn {
  height: 28px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.lang-toggle-btn:hover {
  background: var(--purple-soft);
  color: var(--purple);
  border-color: var(--purple);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 4px 14px rgba(124,58,237,0.35);
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(124,58,237,0.45);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg); color: var(--text); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 6px 10px;
}
.btn-ghost:hover { color: var(--text); background: var(--bg); }

.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 13px 24px; font-size: 15px; }
.btn-block { width: 100%; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-body { padding: 20px; }

/* ================================================
   Home page
   ================================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero {
  text-align: center;
  padding: 56px 0 40px;
}

.hero-eyebrow {
  display: inline-block;
  padding: 4px 12px;
  background: var(--purple-soft);
  color: var(--purple);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
  line-height: 1.15;
}

.hero p {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

.hero-cta { display: flex; justify-content: center; gap: 12px; }

/* Mode card */
.mode-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  transition: var(--transition);
  cursor: pointer;
  display: block;
  max-width: 800px;
  margin: 0 auto 48px;
}

.mode-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.mode-card-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.mode-icon {
  width: 64px;
  height: 64px;
  background: var(--purple-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  flex-shrink: 0;
}

/* Feature grid */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 768px) { .grid-3 { grid-template-columns: 1fr; } }

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

/* How-it-works timeline */
.steps-list { padding: 4px 0; }

.step-item {
  display: flex;
  gap: 16px;
  padding-bottom: 20px;
}
.step-item:last-child { padding-bottom: 0; }

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-body { flex: 1; }
.step-title { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.step-desc  { font-size: 13px; color: var(--text-muted); line-height: 1.55; }

/* ================================================
   Trajectory Demo Page
   ================================================ */

.demo-root {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 56px);
  overflow: hidden;
}

.workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ---- Sidebar ---- */
.sim-sidebar {
  width: 320px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 0 0 12px;
}

.sidebar-scroll::-webkit-scrollbar { width: 3px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Sidebar section */
.sb-section { padding: 16px 18px 0; margin-bottom: 4px; }

.sb-section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sb-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Selector */
.form-row { margin-bottom: 12px; }
.form-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 5px;
}
.form-control {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 28px 7px 10px;
  font-size: 12px;
  color: var(--text);
  outline: none;
  font-family: inherit;
  transition: border-color 0.15s;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 7px center;
  background-repeat: no-repeat;
  background-size: 14px;
}
.form-control:focus { border-color: var(--purple); }

/* Profile items */
.profile-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 5px 0;
  border-bottom: 1px solid rgba(226,232,240,0.5);
  font-size: 14px;
  gap: 8px;
}
.profile-row:last-child { border-bottom: none; }
.profile-label { color: var(--text-muted); flex-shrink: 0; }
.profile-value { color: var(--text-dim); font-weight: 500; text-align: right; font-size: 13px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.tag-wrap  { display: flex; flex-wrap: wrap; gap: 5px; }
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
}
.tag-purple { background: var(--purple-soft);      color: var(--purple); }
.tag-green  { background: var(--green-soft);        color: var(--green); }
.tag-gray   { background: rgba(148,163,184,0.12);   color: var(--text-muted); }

/* Sequence meta pill */
.seq-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.seq-meta-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 14px;
}
.seq-meta-label { color: var(--text-muted); flex-shrink: 0; }
.seq-meta-value { color: var(--text-dim); font-weight: 500; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- Map Area ---- */
.map-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  min-width: 0;
  background: #e5e3df;
}

.map-canvas {
  position: absolute;
  inset: 0;
}

/* Map empty state */
.map-empty {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--bg);
  pointer-events: none;
}
.map-empty-icon  { font-size: 40px; opacity: 0.25; }
.map-empty-title { font-size: 15px; font-weight: 600; color: var(--text-dim); }
.map-empty-sub   { font-size: 12px; color: var(--text-muted); }

/* Node info overlay (top-left) */
.node-overlay {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 400;
  background: rgba(255,255,255,0.94);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
  min-width: 160px;
  max-width: 240px;
  transition: var(--transition);
}

.ov-row   { display: flex; gap: 8px; align-items: baseline; }
.ov-label { font-size: 11px; color: var(--text-muted); flex-shrink: 0; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.ov-val   { font-size: 14px; color: var(--text); font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- Custom map markers ---- */
.map-marker {
  position: relative;   /* needed for ::after ripple */
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  border: 2px solid #fff;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Pop-in entrance animation */
@keyframes marker-pop-in {
  0%   { transform: scale(0);    opacity: 0; }
  50%  { transform: scale(1.28); opacity: 1; }
  70%  { transform: scale(0.90); }
  85%  { transform: scale(1.06); }
  100% { transform: scale(1);    opacity: 1; }
}
.map-marker--pop {
  animation: marker-pop-in 0.65s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* Ripple ring that expands outward on pop-in */
@keyframes marker-ripple {
  0%   { transform: scale(1);   opacity: 0.65; }
  100% { transform: scale(2.8); opacity: 0; }
}
.map-marker--pop::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0;
  animation: marker-ripple 0.9s ease-out 0.12s forwards;
  pointer-events: none;
}

/* ---- Trajectory animation head dot ---- */
.traj-head {
  position: relative;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.traj-head-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;  /* color set via inline style */
  animation: head-ring-pulse 1.15s ease-in-out infinite;
  pointer-events: none;
}
.traj-head-dot {
  position: relative;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,0.9);
  z-index: 1;
}
@keyframes head-ring-pulse {
  0%, 100% { transform: scale(0.55); opacity: 0.7; }
  50%       { transform: scale(1.05); opacity: 0.15; }
}

/* ---- Node Detail Drawer ---- */
.node-drawer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 380px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 401;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  box-shadow: -4px 0 24px rgba(0,0,0,0.1);
  overflow: hidden;
}
.node-drawer.open { transform: translateX(0); }

/* Drawer header */
.drawer-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.drawer-node-badge {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.drawer-titles { flex: 1; min-width: 0; }
.drawer-node-title { font-size: 15px; font-weight: 600; color: var(--text); }
.drawer-node-sub   { font-size: 13px; color: var(--text-muted); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.drawer-close {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 3px 6px;
  border-radius: 4px;
  flex-shrink: 0;
  font-family: inherit;
}
.drawer-close:hover { color: var(--text); background: var(--bg); }

/* Drawer section title */
.drawer-section-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--purple);
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
  margin: 14px 0 10px;
}
.drawer-section-title:first-child { margin-top: 0; }

/* Drawer details (scrollable) */
.drawer-details {
  padding: 14px 16px;
  overflow-y: auto;
  flex: 1;
}
.drawer-details::-webkit-scrollbar { width: 3px; }
.drawer-details::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Node meta grid */
.node-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 10px;
  font-size: 14px;
  margin-bottom: 12px;
}
.node-meta-label { color: var(--text-muted); padding-top: 1px; white-space: nowrap; }
.node-meta-value { color: var(--text-dim); font-weight: 500; word-break: break-word; }

/* Event description */
.event-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--purple);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 12px;
}

/* Motivation */
.motivation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.motivation-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
}

.motivation-block-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.mb-explicit .motivation-block-title { color: var(--purple); }
.mb-implicit .motivation-block-title { color: var(--green); }

.motivation-list {
  list-style: none;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
}
.motivation-list li { padding: 1px 0; }
.motivation-list li::before { content: '·'; margin-right: 4px; color: var(--text-muted); }
.motivation-empty { font-size: 13px; color: var(--text-muted); font-style: italic; }

/* ---- Floating chat button (FAB) ---- */
.chat-fab {
  position: absolute;
  bottom: 94px;   /* raised above the 82px timeline bar */
  right: 404px;   /* sits left of the 380px drawer + gap */
  z-index: 1100;
}

.chat-fab-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 18px;
  background: var(--grad);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 4px 18px rgba(124,58,237,0.35);
  transition: opacity 0.15s, transform 0.15s, box-shadow 0.15s;
}
.chat-fab-btn:hover { opacity: 0.92; transform: translateY(-2px); box-shadow: 0 6px 24px rgba(124,58,237,0.45); }

/* ---- Chat modal (floats centered over map) ---- */
.chat-modal {
  position: absolute;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.22);
  backdrop-filter: blur(2px);
}
.chat-modal.hidden { display: none; }

.chat-modal-panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 48px rgba(0,0,0,0.2);
  width: 440px;
  max-width: calc(100% - 48px);
  height: 540px;
  max-height: calc(100% - 48px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-modal-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  background: var(--purple-soft);
}
.chat-modal-title { font-size: 14px; font-weight: 700; color: var(--purple); }
.chat-modal-close {
  width: 26px;
  height: 26px;
  border: none;
  background: none;
  font-size: 18px;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.chat-modal-close:hover { background: var(--border); color: var(--text); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}
.chat-messages::-webkit-scrollbar { width: 3px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.chat-empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin: auto;
  padding: 16px;
}

/* Chat bubbles */
.chat-msg { display: flex; gap: 7px; max-width: 95%; }
.chat-msg-user { align-self: flex-end; flex-direction: row-reverse; }

.chat-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.chat-msg-user .chat-avatar    { background: var(--purple); }
.chat-msg-user .chat-bubble    { background: #ede9fe; color: #4c1d95; border-bottom-right-radius: 3px; }
.chat-msg-assist .chat-avatar  { background: #475569; }
.chat-msg-assist .chat-bubble  { background: var(--bg); border: 1px solid var(--border); color: var(--text); border-bottom-left-radius: 3px; }

.chat-bubble {
  padding: 7px 10px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.55;
}

.chat-fallback-badge {
  display: inline-block;
  margin-top: 4px;
  font-size: 10px;
  padding: 1px 6px;
  background: rgba(245,158,11,0.12);
  color: #d97706;
  border-radius: 8px;
}

.emotion-tag {
  display: block;
  margin-top: 5px;
  font-size: 10px;
  padding: 1px 7px;
  background: var(--purple-soft);
  color: var(--purple);
  border-radius: 8px;
  text-align: right;
  width: fit-content;
  margin-left: auto;
}

.chat-ended-notice {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding: 8px 0;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

/* Typing indicator */
.typing-dots {
  display: flex;
  gap: 3px;
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  border-bottom-left-radius: 3px;
  width: fit-content;
}
.typing-dots span {
  width: 6px;
  height: 6px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typing 1.2s infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.6; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* Chat input */
.chat-input-area {
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}
.chat-input-row { display: flex; gap: 7px; align-items: flex-end; }
.chat-input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 10px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  resize: none;
  min-height: 34px;
  max-height: 90px;
  outline: none;
  transition: border-color 0.15s;
}
.chat-input:focus { border-color: var(--purple); }
.chat-input:disabled { background: var(--bg); color: var(--text-muted); cursor: not-allowed; }
.chat-hint { font-size: 12px; color: var(--text-muted); margin-top: 5px; }

/* ---- Toast ---- */
.toast-container {
  position: fixed;
  top: 70px;
  right: 18px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-dim);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  animation: slideInR 0.2s ease;
}
.toast-success { border-left: 3px solid var(--green); }
.toast-error   { border-left: 3px solid #ef4444; }
.toast-info    { border-left: 3px solid var(--purple); }

@keyframes slideInR {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ---- Leaflet tooltip override ---- */
.ls-tooltip {
  background: #fff !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  box-shadow: var(--shadow-md) !important;
  padding: 6px 10px !important;
  font-size: 12px !important;
  font-family: Inter, system-ui, sans-serif !important;
  color: var(--text) !important;
}
.ls-tooltip::before { display: none !important; }

/* ---- Node animation popup ---- */
.node-popup .leaflet-popup-content-wrapper {
  padding: 0;
  border-radius: var(--radius-lg) !important;
  box-shadow: 0 4px 20px rgba(0,0,0,0.14) !important;
  border: 1px solid var(--border);
  overflow: hidden;
  font-family: Inter, system-ui, sans-serif;
  min-width: 180px;
}
.node-popup .leaflet-popup-content {
  margin: 0 !important;
  width: auto !important;
}
.node-popup .leaflet-popup-tip-container {
  margin-top: -1px;
}
/* Header band */
.np-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 600;
}
.np-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}
.np-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
/* Meta rows */
.np-meta {
  padding: 6px 10px 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.np-row {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.4;
}
.np-icon {
  font-size: 11px;
  flex-shrink: 0;
  width: 14px;
  text-align: center;
}
/* Event text */
.np-event {
  padding: 6px 10px 8px;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.55;
  border-top: 1px solid var(--border-soft);
  margin-top: 5px;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #cbd5e1; }

/* ---- Util ---- */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.2s ease forwards; }

/* ---- Profile edit button ---- */
.btn-edit-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition);
}
.btn-edit-icon:hover { border-color: var(--purple); color: var(--purple); background: var(--purple-soft); }

.profile-edited-badge {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(124,58,237,0.12);
  color: var(--purple);
  vertical-align: middle;
  margin-left: 4px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* ---- Profile edit modal ---- */
.profile-edit-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.3);
  backdrop-filter: blur(3px);
}
.profile-edit-modal.hidden { display: none; }

.profile-edit-panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 56px rgba(0,0,0,0.22);
  width: 520px;
  max-width: calc(100vw - 32px);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.profile-edit-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  background: var(--purple-soft);
}
.profile-edit-title { font-size: 13px; font-weight: 700; color: var(--purple); }

.profile-edit-body {
  padding: 18px;
  overflow-y: auto;
  flex: 1;
}

.pe-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

.pe-field { display: flex; flex-direction: column; gap: 5px; }

.pe-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-dim);
}
.pe-hint { font-size: 10px; font-weight: 400; color: var(--text-muted); }

.pe-input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color 0.15s;
}
.pe-input:focus { border-color: var(--purple); background: var(--surface); }

.pe-textarea {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  outline: none;
  resize: vertical;
  min-height: 80px;
  line-height: 1.6;
  transition: border-color 0.15s;
}
.pe-textarea:focus { border-color: var(--purple); background: var(--surface); }

.profile-edit-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  background: var(--bg);
}

/* ════════════════════════════════════════
   Live Generation — specific styles
   ════════════════════════════════════════ */

/* Generate button */
.generate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.generate-btn:not(:disabled):hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(124,58,237,0.25);
}
.generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Progress bar */
.live-progress {
  margin-top: 10px;
}
.live-progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 5px;
}
.live-progress-fill {
  height: 100%;
  background: var(--grad);
  border-radius: 99px;
  transition: width 0.4s ease;
}
.live-progress-text {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

/* Ghost marker — next location preview */
.ghost-marker {
  position: relative;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ghost-marker-pulse {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px dashed #94a3b8;
  background: rgba(148,163,184,0.15);
  animation: ghostPulse 1.8s ease-in-out infinite;
}
.ghost-marker-label {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 10px;
  font-weight: 600;
  color: #64748b;
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  margin-bottom: 3px;
  pointer-events: none;
}

@keyframes ghostPulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.15); }
}

/* Terminal log window */
.live-terminal {
  border: 1px solid #1e293b;
  border-radius: var(--radius);
  background: #0d1117;
  overflow: hidden;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 140px;
  max-height: 260px;
}
.live-terminal-body {
  padding: 8px 10px;
  overflow-y: auto;
  flex: 1;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 11px;
  line-height: 1.55;
  color: #c9d1d9;
  scroll-behavior: smooth;
}
.live-terminal-body::-webkit-scrollbar { width: 4px; }
.live-terminal-body::-webkit-scrollbar-thumb { background: #30363d; border-radius: 2px; }
.live-terminal-empty {
  color: #484f58;
  font-style: italic;
}
.tl { display: block; word-break: break-all; }
.tl-dim    { color: #484f58; }
.tl-info   { color: #8b949e; }
.tl-step   { color: #58a6ff; }
.tl-ok     { color: #3fb950; }
.tl-warn   { color: #d29922; }
.tl-prompt { color: #bc8cff; }

/* ================================================================
   Timeline Bar — Preset Demo (trajectory_demo.html)
   ================================================================ */

.tml-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 82px;
  /* transparent enough to see the map beneath */
  background: rgba(255, 255, 255, 0.52);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  z-index: 400;
  padding: 0 36px;
  pointer-events: none;
}

/* The 3 px horizontal track line — sits near the top of the bar */
.tml-track-wrap {
  position: relative;
  height: 3px;
  background: rgba(15, 23, 42, 0.12);
  border-radius: 2px;
  margin-top: 18px;   /* track line at y≈18px inside the bar */
  overflow: visible;
}

/* Coloured fill */
.tml-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0%;
  border-radius: 2px;
  transition: width 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

/*
 * Zero-size anchor point sitting on the track centre.
 * Dot and label are both absolutely positioned relative to it,
 * so neither overlaps the track line.
 */
.tml-node {
  position: absolute;
  top: 50%;           /* centre of the 3px track */
  width: 0;
  height: 0;
  pointer-events: auto;
  cursor: default;
}

/* Dot: centred exactly on the anchor (track centre) */
.tml-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  top: -5px;          /* ½ dot height above anchor */
  left: -5px;         /* ½ dot width  left of anchor */
  background: rgba(15, 23, 42, 0.13);
  border: 2px solid rgba(15, 23, 42, 0.22);
  transition: background 0.3s, border-color 0.3s,
              transform 0.3s, box-shadow 0.3s;
}

/* Label block: starts below the dot bottom (+5px) with a small gap */
.tml-label {
  position: absolute;
  top: 12px;          /* dot bottom (5px) + 7px gap */
  left: 0;
  transform: translateX(-50%);
  text-align: center;
  pointer-events: none;
  white-space: nowrap;
  line-height: 1.3;
}

.tml-label-year {
  display: block;
  font-size: 9px;
  font-weight: 500;
  color: rgba(15, 23, 42, 0.30);
  transition: color 0.3s;
}
.tml-label-date {
  display: block;
  font-size: 9px;
  font-weight: 500;
  color: rgba(15, 23, 42, 0.38);
  transition: color 0.3s;
}
.tml-label-time {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: rgba(15, 23, 42, 0.48);
  transition: color 0.3s, font-weight 0.3s;
}

/* ── States ── */

.tml-node--done { cursor: pointer; }
.tml-node--done .tml-dot {
  background: var(--tml-color, #7c3aed);
  border-color: var(--tml-color, #7c3aed);
}
.tml-node--done .tml-label-year { color: rgba(15, 23, 42, 0.38); }
.tml-node--done .tml-label-date { color: rgba(15, 23, 42, 0.50); }
.tml-node--done .tml-label-time { color: rgba(15, 23, 42, 0.72); }

.tml-node--active { cursor: pointer; }
.tml-node--active .tml-dot {
  background: var(--tml-color, #7c3aed);
  border-color: var(--tml-color, #7c3aed);
  transform: scale(1.55);
  animation: tml-pulse 1.4s ease-in-out infinite;
}
.tml-node--active .tml-label-year { color: rgba(15, 23, 42, 0.50); }
.tml-node--active .tml-label-date { color: rgba(15, 23, 42, 0.65); }
.tml-node--active .tml-label-time { color: #0f172a; font-weight: 700; }

@keyframes tml-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.10); }
  50%       { box-shadow: 0 0 0 7px rgba(15, 23, 42, 0.04); }
}