/* KAS Archive Assistant — embeddable chat widget */

:root {
  --kaschat-dark: #25596e;
  --kaschat-light: #6395a8;
  --kaschat-white: #ffffff;
  --kaschat-bg: #f7fafc;
  --kaschat-border: #d8e3e9;
  --kaschat-text: #1f2d35;
  --kaschat-muted: #5a6d77;
  --kaschat-shadow: 0 12px 40px rgba(37, 89, 110, 0.22);
}

.kaschat-launcher,
.kaschat-panel,
.kaschat-panel * {
  font-family: "Gira Sans", "Helvetica Neue", Arial, sans-serif;
  box-sizing: border-box;
}

/* ---- Floating launcher ---- */
.kaschat-launcher {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--kaschat-dark);
  color: var(--kaschat-white);
  border: none;
  cursor: pointer;
  box-shadow: var(--kaschat-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2147483000;
  transition: transform 0.15s ease, background 0.15s ease;
}
.kaschat-launcher:hover {
  background: var(--kaschat-light);
  transform: scale(1.05);
}
.kaschat-launcher svg { width: 28px; height: 28px; }
.kaschat-launcher[aria-expanded="true"] { display: none; }

/* ---- Panel ---- */
.kaschat-panel {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 400px;
  max-width: calc(100vw - 32px);
  height: min(640px, calc(100vh - 48px));
  background: var(--kaschat-white);
  border-radius: 16px;
  box-shadow: var(--kaschat-shadow);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 2147483000;
  animation: kaschat-in 0.2s ease-out;
}
.kaschat-panel.open { display: flex; }

@keyframes kaschat-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.kaschat-header {
  background: var(--kaschat-dark);
  color: var(--kaschat-white);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.kaschat-header-text { line-height: 1.2; }
.kaschat-header-title { font-weight: 600; font-size: 16px; }
.kaschat-header-sub { font-size: 12px; opacity: 0.8; margin-top: 2px; }
.kaschat-close {
  background: transparent;
  border: none;
  color: var(--kaschat-white);
  cursor: pointer;
  padding: 4px;
  display: flex;
  border-radius: 6px;
}
.kaschat-close:hover { background: rgba(255,255,255,0.15); }
.kaschat-close svg { width: 20px; height: 20px; }

.kaschat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  background: var(--kaschat-bg);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.kaschat-msg {
  max-width: 85%;
  padding: 11px 14px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.5;
  word-wrap: break-word;
  white-space: pre-wrap;
}
.kaschat-msg.user {
  align-self: flex-end;
  background: var(--kaschat-dark);
  color: var(--kaschat-white);
  border-bottom-right-radius: 4px;
}
.kaschat-msg.assistant {
  align-self: flex-start;
  background: var(--kaschat-white);
  color: var(--kaschat-text);
  border: 1px solid var(--kaschat-border);
  border-bottom-left-radius: 4px;
}
.kaschat-msg cite-mark {
  color: var(--kaschat-dark);
  font-weight: 600;
  font-style: normal;
}

.kaschat-citations {
  align-self: flex-start;
  width: 92%;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: -6px;
}
.kaschat-citation {
  background: var(--kaschat-white);
  border: 1px solid var(--kaschat-border);
  border-radius: 10px;
  padding: 8px;
  font-size: 13px;
  text-decoration: none;
  color: var(--kaschat-text);
  display: flex;
  gap: 10px;
  align-items: stretch;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.kaschat-citation:hover {
  border-color: var(--kaschat-light);
  background: #fafcfd;
  transform: translateX(2px);
}
.kaschat-citation.hidden { display: none; }

.kaschat-citation-thumb {
  width: 112px;
  height: 63px;
  object-fit: cover;
  flex-shrink: 0;
  border-radius: 6px;
  background: #e8eef1;
}
.kaschat-citation-thumb-fallback {
  width: 112px;
  height: 63px;
  flex-shrink: 0;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--kaschat-light), var(--kaschat-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.kaschat-citation-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.kaschat-citation-index {
  color: var(--kaschat-dark);
  font-weight: 700;
  margin-right: 5px;
}
.kaschat-citation-title {
  font-weight: 600;
  line-height: 1.3;
  color: var(--kaschat-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.kaschat-citation-meta {
  font-size: 11.5px;
  color: var(--kaschat-muted);
  margin-top: 3px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.kaschat-citation-timestamp {
  color: var(--kaschat-dark);
  font-weight: 600;
  margin-left: 4px;
}
.kaschat-citation.no-url { opacity: 0.7; cursor: default; }
.kaschat-citation.no-url:hover { border-color: var(--kaschat-border); background: var(--kaschat-white); transform: none; }

.kaschat-more {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--kaschat-border);
  color: var(--kaschat-dark);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
  font-family: inherit;
}
.kaschat-more:hover {
  background: var(--kaschat-white);
  border-color: var(--kaschat-light);
}

.kaschat-suggestions {
  align-self: flex-start;
  max-width: 92%;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: -4px;
}
.kaschat-suggestion {
  background: var(--kaschat-white);
  border: 1px solid var(--kaschat-light);
  color: var(--kaschat-dark);
  padding: 7px 12px;
  border-radius: 16px;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.kaschat-suggestion:hover {
  background: var(--kaschat-light);
  color: var(--kaschat-white);
  transform: translateY(-1px);
}

.kaschat-typing {
  align-self: flex-start;
  display: flex;
  gap: 4px;
  padding: 12px 14px;
  background: var(--kaschat-white);
  border: 1px solid var(--kaschat-border);
  border-radius: 14px;
  border-bottom-left-radius: 4px;
}
.kaschat-typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--kaschat-light);
  animation: kaschat-bounce 1.2s infinite;
}
.kaschat-typing span:nth-child(2) { animation-delay: 0.15s; }
.kaschat-typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes kaschat-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-5px); opacity: 1; }
}

.kaschat-form {
  padding: 12px;
  background: var(--kaschat-white);
  border-top: 1px solid var(--kaschat-border);
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.kaschat-input {
  flex: 1;
  border: 1px solid var(--kaschat-border);
  border-radius: 22px;
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  color: var(--kaschat-text);
  background: var(--kaschat-bg);
}
.kaschat-input:focus { border-color: var(--kaschat-light); background: var(--kaschat-white); }
.kaschat-send {
  background: var(--kaschat-dark);
  color: var(--kaschat-white);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s ease;
}
.kaschat-send:hover:not(:disabled) { background: var(--kaschat-light); }
.kaschat-send:disabled { background: var(--kaschat-border); cursor: not-allowed; }
.kaschat-send svg { width: 18px; height: 18px; }

.kaschat-error {
  align-self: center;
  font-size: 12px;
  color: #a13232;
  background: #fbe9e9;
  padding: 6px 12px;
  border-radius: 8px;
}

/* ---- Quick Explore ---- */
.kaschat-quick-explore {
  background: var(--kaschat-white);
  border-top: 1px solid var(--kaschat-border);
  flex-shrink: 0;
}

.kaschat-quick-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  cursor: pointer;
  user-select: none;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: background 0.15s;
}
.kaschat-quick-toggle:hover {
  background: var(--kaschat-bg);
}
.kaschat-quick-label {
  font-size: 12px;
  color: var(--kaschat-muted);
  font-weight: 500;
}
.kaschat-quick-icon {
  width: 16px;
  height: 16px;
  color: var(--kaschat-muted);
  transition: transform 0.2s;
}
.kaschat-quick-explore.expanded .kaschat-quick-icon {
  transform: rotate(180deg);
}

.kaschat-quick-content {
  display: none;
  padding: 0 16px 14px;
}
.kaschat-quick-explore.expanded .kaschat-quick-content {
  display: block;
}

.kaschat-quick-group {
  margin-bottom: 12px;
}
.kaschat-quick-group:last-child {
  margin-bottom: 0;
}
.kaschat-quick-group-label {
  font-size: 11px;
  color: var(--kaschat-muted);
  margin-bottom: 8px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.kaschat-quick-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.kaschat-quick-btn {
  padding: 7px 14px;
  font-size: 13px;
  border: 1px solid var(--kaschat-border);
  border-radius: 6px;
  background: var(--kaschat-white);
  cursor: pointer;
  transition: all 0.15s;
  color: var(--kaschat-text);
  font-weight: 450;
  font-family: inherit;
}
.kaschat-quick-btn:hover {
  background: var(--kaschat-dark);
  color: var(--kaschat-white);
  border-color: var(--kaschat-dark);
}
.kaschat-quick-btn.census {
  border-color: var(--kaschat-light);
  color: var(--kaschat-dark);
}
.kaschat-quick-btn.census:hover {
  background: var(--kaschat-light);
  color: var(--kaschat-white);
  border-color: var(--kaschat-light);
}

/* ---- Selector Popups ---- */
.kaschat-selector {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 12px;
  right: 12px;
  background: var(--kaschat-white);
  border: 1px solid var(--kaschat-border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(37, 89, 110, 0.12);
  padding: 12px;
  margin-bottom: 8px;
  max-height: 220px;
  overflow-y: auto;
  z-index: 10;
}
.kaschat-selector.show {
  display: block;
}
.kaschat-selector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.kaschat-selector-title {
  font-size: 12px;
  color: var(--kaschat-muted);
  font-weight: 500;
}
.kaschat-back-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--kaschat-muted);
  background: var(--kaschat-bg);
  border: 1px solid var(--kaschat-border);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.kaschat-back-btn:hover {
  background: var(--kaschat-border);
  color: var(--kaschat-text);
}
.kaschat-back-btn svg {
  width: 12px;
  height: 12px;
}
.kaschat-selector-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
.kaschat-selector-grid.two-col {
  grid-template-columns: repeat(2, 1fr);
}
.kaschat-selector-btn {
  padding: 8px 10px;
  font-size: 12px;
  border: 1px solid var(--kaschat-border);
  border-radius: 4px;
  background: var(--kaschat-white);
  cursor: pointer;
  transition: all 0.15s;
  color: var(--kaschat-text);
  text-align: center;
  font-family: inherit;
}
.kaschat-selector-btn:hover {
  background: var(--kaschat-light);
  color: var(--kaschat-white);
  border-color: var(--kaschat-light);
}
.kaschat-selector-btn.trend {
  text-align: left;
  padding: 10px 12px;
}
.kaschat-selector-btn.trend small {
  display: block;
  font-size: 10px;
  color: var(--kaschat-muted);
  margin-top: 2px;
}
.kaschat-selector-btn.trend:hover small {
  color: rgba(255,255,255,0.8);
}

.kaschat-form-wrapper {
  position: relative;
}

@media (max-width: 480px) {
  .kaschat-panel {
    right: 8px;
    bottom: 8px;
    left: 8px;
    width: auto;
    height: calc(100vh - 16px);
    border-radius: 12px;
  }
}