@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&display=swap");

:root {
  font-family: "Manrope", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --bg: #f7f1e8;
  --surface: #fffaf1;
  --panel: #fffdf8;
  --text: #1f140c;
  --text-muted: #7d6c5f;
  --border: #e6d8c7;
  --input-bg: #f2ede5;
  --input-text: #1f140c;
  --placeholder: #9d8e82;
  --assistant-text: #20160e;
  --accent-start: #f97316;
  --accent-end: #fbbf24;
  --accent-outline: #f97316;
  --code-inline-bg: rgba(15, 118, 110, 0.08);
  --code-inline-text: #0f766e;
  --link: #0f766e;
  --link-border: rgba(15, 118, 110, 0.24);
  --link-border-hover: rgba(15, 118, 110, 0.6);
  --pre-bg: #0f172a;
  --pre-text: #e5e7eb;
  --scrollbar-thumb: #d6c6b5;
  --scrollbar-thumb-hover: #c3b19c;
  --step-progress: #6f5847;
  --step-answer: #154133;
  --step-error: #b3362b;
  --step-border: #eedfcc;
  --shadow-strong: 0 18px 45px rgba(240, 140, 40, 0.25);
  --shadow-button: 0 8px 18px rgba(240, 140, 40, 0.4);
}

:root.theme-dark {
  --bg: #0f1115;
  --surface: #141924;
  --panel: #121621;
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --border: #252c39;
  --input-bg: #1b1f29;
  --input-text: #e5e7eb;
  --placeholder: #8a92a3;
  --assistant-text: #e5e7eb;
  --accent-start: #f59e0b;
  --accent-end: #f97316;
  --accent-outline: #f59e0b;
  --code-inline-bg: rgba(15, 118, 110, 0.24);
  --code-inline-text: #d1fae5;
  --link: #67e8f9;
  --link-border: rgba(103, 232, 249, 0.35);
  --link-border-hover: rgba(103, 232, 249, 0.75);
  --pre-bg: #0b1020;
  --pre-text: #e5e7eb;
  --scrollbar-thumb: #2f3746;
  --scrollbar-thumb-hover: #3c4558;
  --step-progress: #d0bba5;
  --step-answer: #f5e3c7;
  --step-error: #fca5a5;
  --step-border: #2f3746;
  --shadow-strong: 0 16px 40px rgba(0, 0, 0, 0.55);
  --shadow-button: 0 8px 18px rgba(0, 0, 0, 0.45);
}

html,
body {
  height: 100%;
}

body {
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  color: var(--text);
  background:
    radial-gradient(160% 120% at 10% 10%, rgba(249, 115, 22, 0.08), transparent 40%),
    radial-gradient(120% 90% at 80% 0%, rgba(251, 191, 36, 0.12), transparent 35%),
    var(--bg);
  line-height: 1.5;
  margin: 0;
}

.theme-dark body {
  background:
    radial-gradient(160% 120% at 10% 10%, rgba(245, 158, 11, 0.12), transparent 38%),
    radial-gradient(120% 90% at 80% 0%, rgba(15, 118, 110, 0.18), transparent 32%),
    var(--bg);
}

.app-body,
.app-shell,
.app-main {
  background: transparent;
  color: var(--text);
}

.app-main {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.88));
}

.theme-dark .app-main {
  background: linear-gradient(180deg, rgba(18, 22, 33, 0.9), rgba(20, 24, 36, 0.86));
}

.app-input-bar {
  border-color: var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.86));
  backdrop-filter: blur(10px);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.05);
  border-top: 1px solid var(--border);
}

.theme-dark .app-input-bar {
  background: linear-gradient(180deg, rgba(18, 22, 33, 0.9), rgba(18, 22, 33, 0.82));
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.25);
}

.app-graph-btn {
  border-color: var(--border);
  background: var(--panel);
  color: var(--text);
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.app-graph-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-button);
  border-color: var(--accent-outline);
}

/* Empty state */
.empty-state {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
  padding: 1.5rem;
}

.empty-state-icon {
  color: var(--accent-start);
  opacity: 0.75;
}

/* Message bubbles */
.message-bubble-content p {
  margin: 0;
}

.message-bubble-content ul {
  margin: 0.5rem 0 0.25rem 1.1rem;
  padding: 0;
}

.message-bubble-content li {
  margin-bottom: 0.2rem;
}

.message-bubble-content pre {
  margin-top: 0.75rem;
  padding: 0.85rem;
  background: var(--pre-bg);
  border-radius: 0.5rem;
  color: var(--pre-text);
  overflow-x: auto;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
}

.message-bubble-content code {
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  background: var(--code-inline-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 0.375rem;
  font-size: 0.9em;
  color: var(--code-inline-text);
}

.message-bubble-content pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.message-bubble-content a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid var(--link-border);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.message-bubble-content a:hover {
  border-color: var(--link-border-hover);
}

#messages {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
  background: var(--bg);
  color: var(--text);
}

/* Message styling adjustments */
.message-bubble {
  margin-top: 0;
}

.message-bubble.message-user {
  align-self: flex-end;
  margin-left: auto;
  margin-right: 0;
  max-width: 72%;
  display: inline-flex;
  justify-content: flex-start;
  padding: 0.95rem 1.2rem 1rem;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 1.15rem 1.15rem 0.5rem 1.15rem;
  color: #ffffff;
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(6px);
}

.message-bubble.message-assistant {
  align-self: stretch;
  max-width: 100%;
  margin-right: 0;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

.meta-muted {
  color: var(--text-muted);
}

.user-text {
  color: #ffffff;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.assistant-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-top: 0;
}

.assistant-step {
  display: block;
}

.assistant-step-dot {
  display: none;
}

.assistant-step-body {
  border: none;
  border-radius: 0;
  padding: 0;
  background: transparent;
  color: var(--assistant-text);
  word-break: break-word;
  font-size: 1rem;
  line-height: 1.7;
}

.assistant-step.is-progress .assistant-step-body {
  color: var(--text-muted);
  border-left: 3px solid var(--border);
  padding-left: 0.85rem;
}

.assistant-step.is-answer .assistant-step-body {
  padding-left: 0;
  border-left: none;
}

.assistant-step.is-error .assistant-step-body {
  color: var(--step-error);
  border-left: 3px solid rgba(179, 54, 43, 0.35);
  padding-left: 0.85rem;
  background: rgba(179, 54, 43, 0.06);
}

.assistant-step.is-error .assistant-step-dot {
  background: var(--step-error);
  box-shadow: 0 0 0 4px rgba(179, 54, 43, 0.14);
}

.assistant-step-body p {
  margin: 0 0 0.35rem 0;
}

.assistant-step-body p:last-child {
  margin-bottom: 0;
}

.assistant-step-body ul {
  margin: 0.35rem 0 0.35rem 1.1rem;
  padding: 0;
}

.assistant-step-body pre {
  margin-top: 0.55rem;
  padding: 0.85rem;
  background: var(--pre-bg);
  border-radius: 0.65rem;
  color: var(--pre-text);
  overflow-x: auto;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.88rem;
  line-height: 1.5;
}

.assistant-step-body code {
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  background: var(--code-inline-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 0.375rem;
  font-size: 0.9em;
  color: var(--code-inline-text);
}

.assistant-step-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.assistant-step-body a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid var(--link-border);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.assistant-step-body a:hover {
  border-color: var(--link-border-hover);
}

/* Send button hover effect */
#sendBtn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-strong) !important;
}

#sendBtn:active:not(:disabled) {
  transform: translateY(0px);
}

.app-send-btn {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  box-shadow: var(--shadow-button);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.app-send-btn:focus-visible {
  outline-color: var(--accent-outline);
}

/* Auto-resize textarea */
#chatInput {
  overflow-y: auto;
  background: var(--input-bg);
  color: var(--input-text);
  caret-color: var(--input-text);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transition: background-color 0.2s ease, color 0.2s ease;
}

#chatInput::placeholder {
  color: var(--placeholder);
}

#chatInput:focus {
  background: #ffffff;
  border-color: var(--accent-start);
}

.theme-dark #chatInput {
  background: var(--input-bg);
  color: var(--input-text);
  border-color: var(--border);
}

.theme-dark #chatInput:focus {
  background: #0f172a;
  border-color: var(--accent-start);
}

#chatInput::-webkit-scrollbar {
  width: 6px;
}

#chatInput::-webkit-scrollbar-track {
  background: transparent;
}

#chatInput::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}

#chatInput::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* Graph page */
.graph-page {
  min-height: 100vh;
  background:
    radial-gradient(120% 80% at 20% 15%, rgba(249, 115, 22, 0.08), transparent 42%),
    radial-gradient(110% 70% at 85% 0%, rgba(103, 232, 249, 0.12), transparent 38%),
    var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

.graph-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.88));
}

.theme-dark .graph-header {
  background: linear-gradient(180deg, rgba(18, 22, 33, 0.9), rgba(18, 22, 33, 0.84));
}

.graph-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.graph-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.graph-status {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.graph-body {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 0;
  min-height: 0;
}

.graph-canvas {
  background: #0b1224;
  position: relative;
}

.graph-tree {
  border-left: 1px solid var(--border);
  background: var(--surface);
  padding: 16px 14px;
  overflow: auto;
}

.graph-tree-title {
  font-weight: 700;
  margin-bottom: 10px;
}

.tree-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.tree-list ul {
  padding-left: 14px;
}

.tree-children {
  margin-top: 4px;
}

.tree-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.tree-item-folder {
  cursor: pointer;
}

.tree-item:hover {
  background: rgba(15, 118, 110, 0.08);
}

.tree-caret {
  display: inline-block;
  width: 12px;
  transition: transform 0.12s ease;
  color: var(--text-muted);
}

.tree-caret.is-open {
  transform: rotate(90deg);
}

.tree-caret-placeholder {
  opacity: 0;
}

.tree-list li {
  margin: 4px 0;
  color: var(--text);
}

.tree-item {
  display: block;
  padding: 6px 8px;
  border-radius: 8px;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.tree-item:hover {
  background: rgba(15, 118, 110, 0.08);
}

.tree-tag {
  color: var(--text-muted);
}

.graph-tooltip {
  position: fixed;
  pointer-events: none;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  min-width: 220px;
  max-width: 320px;
  z-index: 100;
}

.graph-tooltip .label {
  font-weight: 700;
  margin-bottom: 4px;
}

.graph-tooltip .meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}