:root {
  --header-height: 64px;
  --bg: #f8f9fa;
  --card-bg: #ffffff;
  --text-primary: #1f2937;
  --text-muted: #4b5563;
  --accent-light: #6b7280;
  --accent-dark: #00bcd4;
  --border-light: #e5e7eb;
  --border-dark: #2c2c2c;
  --radius: 14px;
  --gap: 16px;
  --icon-size: 24px;
  --transition-fast: 0.18s;
  --transition-med: 0.28s;
  --shadow-soft: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-strong: 0 8px 24px rgba(0,0,0,0.15);
  --gutter: clamp(10px, 4vw, 48px);
}
[hidden] { display: none !important; }

[data-theme="light"] {
  --bg: #f6f7fb;
  --card-bg: #ffffff;
  --text-primary: #1f2937;
  --text-muted: #687385;
  --accent: var(--accent-dark);
  --border: var(--border-light);
  --icon-hover-bg: #eef1f5;
  --send-bg: var(--accent-dark);
  --send-color: #fff;
  --send-hover-bg: #00aac0;
  --bubble-user-bg: linear-gradient(135deg,#06b6d4 0%,#22d3ee 100%);
  --bubble-assistant-bg: #ffffff;
  --scrollbar-track: #e9eef5;
  --scrollbar-thumb: #c5ccd8;
}

[data-theme="dark"] {
  --bg: #0f1115;
  --card-bg: #151821;
  --text-primary: #e6e7ea;
  --text-muted: #a9b1c3;
  --accent: #00d4ff;
  --border: #252a36;
  --icon-hover-bg: #1b2030;
  --send-bg: #00c2e5;
  --send-color: #0b111a;
  --send-hover-bg: #00a8c6;
  --bubble-user-bg: linear-gradient(135deg,#00bcd4 0%,#22d3ee 100%);
  --bubble-assistant-bg: #161b26;
  --scrollbar-track: #10131a;
  --scrollbar-thumb: #2a3142;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.theme-switching *,
.theme-switching *::before,
.theme-switching *::after {
  transition: none !important;
  animation: none !important;
}

.button,
.input__wrapper,
.tools-btn,
.attach-btn,
.input__send,
.tools-menu__item,
.header__theme-toggle,
.header__icon-btn {
  transition:
    background var(--transition-med),
    color var(--transition-med),
    border-color var(--transition-med),
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

@media (prefers-reduced-motion: reduce) {
  .button,
  .input__wrapper,
  .tools-btn,
  .attach-btn,
  .input__send,
  .tools-menu__item,
  .header__theme-toggle,
  .header__icon-btn {
    transition: none !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: ui-sans-serif, system-ui, -apple-system, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--gap);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header__logo {
  font-weight: 800;
  letter-spacing: .2px;
  font-size: 1.2rem;
  color: var(--text-primary);
  text-decoration: none;
  pointer-events: none;
}

.header__theme-toggle,
.header__icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--icon-size);
  color: var(--text-muted);
}

.header__theme-toggle:hover,
.header__icon-btn:hover { color: var(--accent); }

.header__controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-container {
  position: relative;
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--header-height));
}

.response-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: calc(var(--gap) - 6px) var(--gap);
}

.response-area > .chat-message:first-child { margin-top: 4px; }

#confirmModal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
#confirmModal.active { display: flex; }

#confirmModal .modal-content {
  background: var(--card-bg);
  padding: 22px;
  border-radius: 16px;
  max-width: 360px;
  width: calc(100% - 32px);
  text-align: center;
  box-shadow: var(--shadow-strong);
  border: 1px solid var(--border);
}
#confirmModal .modal-buttons {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  justify-content: center;
}
#confirmModal button {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  cursor: pointer;
  background: var(--card-bg);
}
#confirmModal button:hover { background: var(--icon-hover-bg); }
#confirmModal .btn-danger { border-color: #ef4444; color: #ef4444; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.chat-message {
  max-width: min(760px, calc(100% - var(--gutter) * 2));
  margin: 8px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: fadeIn var(--transition-fast) ease-out;
}

.chat-message--user {
  align-self: flex-end;
  margin-right: var(--gutter);
}
.chat-message--assistant {
  align-self: flex-start;
  margin-left: var(--gutter);
}

.chat-message > div:first-child {
  padding: 12px 14px;
  border-radius: 18px;
  line-height: 1.45;
  word-break: break-word;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border);
  background: var(--bubble-assistant-bg);
  overflow: visible;            
}
.table-scroller {
  overflow-x: auto;           
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;       
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

.table-scroller table {
  width: max-content;          
  min-width: 640px;
  table-layout: auto;          
}
.table-scroller::-webkit-scrollbar { height: 10px; }
.table-scroller::-webkit-scrollbar-track { background: var(--scrollbar-track); }
.table-scroller::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 8px;
}
.table-scroller::-webkit-scrollbar-thumb:hover { filter: brightness(1.15); }
.chat-message { position: relative; z-index: 1; }
.chat-message:hover { z-index: 10; } 
.chat-message--assistant > div:first-child { color: var(--text-primary); }

.chat-message--user > div:first-child {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  line-height: 1.4;
  padding: 10px 16px;
  background: var(--bubble-user-bg);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 18px rgba(0,188,212,0.28);
}

.chat-message .timestamp {
  font-size: 0.78rem;
  line-height: 1;
  opacity: .75;
  padding: 0 6px;
}

[data-theme="light"] .chat-message .timestamp { color: #6b7280; }
[data-theme="dark"]  .chat-message .timestamp { color: #a9b1c3; }

.chat-message--assistant.error > div:first-child {
  background: #fee2e2;
  border-color: #fecaca;
  color: #991b1b;
}

.scroll-to-bottom {
  position: sticky;
  align-self: flex-end;
  right: var(--gap);
  bottom: 24px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: none;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-strong);
}
.scroll-to-bottom:hover { transform: translateY(-2px); }

.chat-footer {
  background: var(--bg);
  padding: var(--gap) calc(var(--gap) * 2);
  box-shadow: 0 -6px 18px rgba(0, 0, 0, 0.05);
}

.roi-btn-container { text-align: center; margin-bottom: var(--gap); }
.roi-btn-container .button--primary { width: 100%; max-width: 320px; }

.quick-btns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--gap);
  margin-bottom: var(--gap);
}
.quick-btns .button { font-weight: 600; }
.quick-btns .button:hover { transform: translateY(-1px); }

.button {
  padding: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  cursor: pointer;
}
.button:hover { background: var(--icon-hover-bg); border-color: var(--accent); }
.button--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 10px 20px rgba(0,212,255,0.18);
}
.button--primary:hover { filter: brightness(0.95); }

.input { width: 100%; }

.input__wrapper {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: visible;
  box-shadow: var(--shadow-soft);
}
.input__wrapper:focus-within { border-color: var(--accent); }

.input__icon-group {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: visible;
  z-index: 10;
  padding-left: 8px;
}

.attach-btn,
.tools-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 12px;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
}
.attach-btn:hover,
.tools-btn:hover {
  background: var(--icon-hover-bg);
  color: var(--accent);
  border-color: var(--border);
}

.attach-btn .material-icons-outlined,
.tools-btn .material-icons-outlined,
.caret-icon {
  color: inherit;
  opacity: .9;
}

.tools-label { margin: 0 4px; }
.caret-icon { transition: transform var(--transition-fast); }

.tools-menu {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 8px;
  padding: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: none;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-soft);
  z-index: 20;
}
.input__icon-group.open .tools-menu { display: flex; }
.input__icon-group.open .caret-icon { transform: rotate(180deg); }

.tools-menu__item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-primary);
}
.tools-menu__item:hover {
  background: var(--icon-hover-bg);
  color: var(--accent);
}
.tools-menu__item .material-icons-outlined { font-size: 20px; }
.tools-menu__label { font-size: 0.95rem; }
.tools-menu__item.active {
  background-color: var(--accent);
  color: #fff;
}
.tools-menu__item.active .material-icons-outlined,
.tools-menu__item.active .tools-menu__label { color: #fff; }

#fileInput { display: none; }

.input__field {
  border: none;
  outline: none;
  padding: 12px 10px;
  font-size: 1rem;
  background: transparent;
  color: var(--text-primary);
  width: 100%;
}
.input__send {
  background: var(--send-bg);
  color: var(--send-color);
  border: none;
  border-radius: 10px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin: 6px;
}
.input__send:disabled { cursor: not-allowed; opacity: 0.55; }
.input__send:hover:not(:disabled) { background: var(--send-hover-bg); }

.chat-message > div:first-child p,
.chat-message > div:first-child ul,
.chat-message > div:first-child ol {
  margin: 0 0 .6em 0;
  padding-left: 1.1em;
}
.chat-message > div:first-child ul { list-style: disc; }
.chat-message > div:first-child ol { list-style: decimal; }

.chat-message code {
  background: rgba(0,0,0,0.06);
  padding: 2px 6px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
  color: inherit;
}
[data-theme="dark"] .chat-message code { background: rgba(255,255,255,0.08); }

.chat-message strong { color: var(--accent); font-weight: 700; }

.chat-message table {
  table-layout: auto;
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  margin: 0.8em 0;
  border-radius: 12px;
}

.chat-message table th,
.chat-message table td {
  padding: 10px 8px;
  text-align: center;
  border: 1px solid var(--border);
  white-space: nowrap;   
  font-size: 0.92rem;
}


.chat-message table th > .cell-scroll::-webkit-scrollbar,
.chat-message table td > .cell-scroll::-webkit-scrollbar { height: 8px; }
.chat-message table th > .cell-scroll::-webkit-scrollbar-track,
.chat-message table td > .cell-scroll::-webkit-scrollbar-track { background: var(--scrollbar-track); }
.chat-message table th > .cell-scroll::-webkit-scrollbar-thumb,
.chat-message table td > .cell-scroll::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 8px;
}

[data-theme="dark"] .chat-message table th { background: #00b7df; }
[data-theme="dark"] .chat-message table tr:nth-child(even) td { background: rgba(255,255,255,0.04); }

.chat-message th.tooltip {
  position: relative;
  cursor: help;
  overflow: visible;
  z-index: 50;                                 
}

.chat-message th.tooltip span { display: inline-block; }

.chat-message th.tooltip::after {
  z-index: 1000;
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  display: block;
  width: max-content;
  min-width: 220px;
  max-width: 360px;
  padding: 8px 10px;
  background: var(--card-bg);
  color: var(--text-primary);
  text-align: left;
  white-space: normal;
  word-break: break-word;
  line-height: 1.25;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  pointer-events: none;
  opacity: 0;
  transition: opacity .12s ease;
}
.chat-message th.tooltip:hover::after { opacity: 1; }
.chat-message td.cell-tip {
  position: relative;
  overflow: visible;
}
.chat-message td.cell-tip::after {
  content: attr(data-full);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  display: block;
  max-width: 360px;
  padding: 8px 10px;
  background: var(--card-bg);
  color: var(--text-primary);
  white-space: normal;
  word-break: break-word;
  line-height: 1.25;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  pointer-events: none;
  opacity: 0;
  transition: opacity .12s ease;
  z-index: 2000;
}
.chat-message td.cell-tip:hover::after { opacity: 1; }

.chat-message td.cell-tip[data-tip-pos="bottom"]::after {
  bottom: auto;
  top: calc(100% + 8px);
}

.chat-message th.tooltip,
.chat-message td.cell-tip {
  cursor: default !important;
  position: static !important;
}

.chat-message th.tooltip::after,
.chat-message td.cell-tip::after {
  display: none !important;
  content: none !important;
}

.attachment-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 999px;                  
  box-shadow: var(--shadow-soft);
  transition: box-shadow .18s, border-color .18s, transform .12s;
}

.attachment-badge:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(0,0,0,.08);
}

.attachment-badge__clip {
  font-size: 18px;
  opacity: .8;
}

.attachment-badge__name {
  font-weight: 600;
}

.attachment-badge__size {
  color: var(--text-muted);
  opacity: .9;
  margin-left: 4px;
}

#attachmentRemove {
  inline-size: 26px;
  block-size: 26px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: background .18s, border-color .18s, transform .08s, box-shadow .18s, color .18s;
  padding: 0;
  outline: none;
}

#attachmentRemove:hover {
  background: var(--icon-hover-bg);
  border-color: var(--accent);
  transform: translateY(-1px);
}

#attachmentRemove:active {
  transform: translateY(0);
}

#attachmentRemove:focus-visible {
  box-shadow: 0 0 0 3px rgba(0,212,255,.35);
  border-color: var(--accent);
}

#attachmentRemove::before,
#attachmentRemove::after {
  content: "";
  display: block;
  width: 12px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: absolute;
}

#attachmentRemove::before { transform: rotate(45deg); }
#attachmentRemove::after  { transform: rotate(-45deg); }

#attachmentRemove { margin-left: 4px; }

[data-theme="dark"] #attachmentRemove:hover {
  background: rgba(255,255,255,.06);
}

#attachmentBadge[hidden] { display: none !important; }
.metrics-card{
  margin-top:12px;
  padding:14px 16px;
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--card-bg);
  box-shadow: var(--shadow-soft);
}
.metrics-title{
  font-weight:700;
  color: var(--accent);
  margin-bottom:10px;
}
.metrics-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap:12px;
}
.metric{
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:10px;
  background: rgba(0,0,0,0.02);
}
[data-theme="dark"] .metric{ background: rgba(255,255,255,0.03); }

.metric .label{
  font-weight:700;
  margin-bottom:4px;
}
.metric .value{
  font-size:1.05rem;
  font-weight:800;
  margin-bottom:4px;
}
.metric .desc{
  font-size:.9rem;
  color: var(--text-muted);
  line-height:1.25;
}
.message-attachment{
  align-self: stretch;
  max-width: min(760px, calc(100% - var(--gutter) * 2));
  margin-top: 6px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-bg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.chat-message--user .message-attachment{ 
  margin-right: var(--gutter); 
  align-self: flex-end;
}
.chat-message--assistant .message-attachment{ 
  margin-left: var(--gutter); 
  align-self: flex-start;
}

.message-attachment__badge{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  font-size: .92rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.02);
  flex-wrap: wrap; 
}
[data-theme="dark"] .message-attachment__badge{ background: rgba(255,255,255,.04); }

.message-attachment__badge .name {
  font-weight: 700;
  min-width: 0;                 
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;      
  white-space: nowrap;
}

.message-attachment__badge .size {
  white-space: nowrap;          
  color: var(--text-muted);
}

.message-attachment__preview{
  display: block;
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: contain;
  background: #0001;
}

html {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

html::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

html::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

html::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 8px;
}

html::-webkit-scrollbar-thumb:hover {
  filter: brightness(1.15);
}