@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@200;300;500&display=swap');

:root {
  /* ThinkFox Brand Colors */
  --thinkfox-deep-orange: #FF3822;
  --thinkfox-bright-orange: #FF9F22;
  --thinkfox-dark: #101010;
  --thinkfox-grey: #373737;
  --thinkfox-white: #FFFFFF;

  /* Background Colors */
  --bg-primary: #101010;
  --bg-secondary: #373737;
  --bg-tertiary: #4a4a4a;

  /* Text Colors */
  --text-primary: #f5f5f5;
  --text-secondary: #c4c4c4;

  /* Accent Colors */
  --accent: #FF3822;
  --accent-hover: #FF9F22;
  --accent-gradient: linear-gradient(to right, #FF3822, #FF9F22);

  /* Status Colors */
  --success: #10b981;
  --error: #ef4444;

  /* Borders & Shadows */
  --border: #4a4a4a;
  --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 300;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
  gap: 2rem;
}

header h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

header p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.status-pills {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.pill {
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  background: var(--bg-secondary);
  font-size: 0.813rem;
  white-space: nowrap;
  border: 1px solid var(--border);
}

.pill.ok {
  background: var(--accent-gradient);
  color: white;
  border-color: var(--thinkfox-deep-orange);
  font-weight: 500;
}

main {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 0;
  height: calc(100vh - 100px);
  max-width: 1600px;
  margin: 0 auto;
}

.chat-panel {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  height: 100%;
}

#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 85%;
}

.message-user {
  align-self: flex-end;
}

.message-user .message-content {
  background: var(--accent);
  color: white;
}

.message-assistant {
  align-self: flex-start;
}

.message-assistant .message-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}

.message-error {
  align-self: center;
  max-width: 100%;
}

.message-error .message-content {
  background: var(--bg-secondary);
  border: 1px solid var(--error);
  color: var(--error);
}

.message-role {
  font-size: 0.813rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0 0.75rem;
}

.message-content {
  padding: 0.875rem 1rem;
  border-radius: 1rem;
  line-height: 1.5;
}

.message-content code {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-size: 0.875em;
  font-family: "SF Mono", Monaco, Consolas, monospace;
}

.message-content pre {
  background: rgba(0, 0, 0, 0.3);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 0.5rem 0;
}

.message-content pre code {
  background: none;
  padding: 0;
}

.tool-calls {
  padding: 0 0.75rem;
  font-size: 0.813rem;
  color: var(--text-secondary);
}

.tool-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: var(--bg-tertiary);
  border-radius: 0.25rem;
  margin-left: 0.25rem;
  font-family: "SF Mono", Monaco, monospace;
  font-size: 0.75rem;
}

.subagent-calls {
  padding: 0 0.75rem 0.5rem;
  font-size: 0.813rem;
  color: var(--text-secondary);
}

.subagent-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: rgba(99, 102, 241, 0.2);
  border-radius: 0.25rem;
  margin-left: 0.25rem;
  font-family: "SF Mono", Monaco, monospace;
  font-size: 0.75rem;
  border: 1px solid rgba(99, 102, 241, 0.6);
}

.slash-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  font-size: 0.75rem;
  font-family: "SF Mono", Monaco, monospace;
  font-weight: 500;
  margin: 0.125rem;
}

.chat-input {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.input-row {
  margin-bottom: 0.75rem;
}

.slash-commands {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.slash-label {
  font-size: 0.813rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.slash-btn {
  padding: 0.375rem 0.875rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  font-size: 0.813rem;
  font-family: "SF Mono", Monaco, monospace;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.slash-btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

textarea {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.938rem;
  resize: vertical;
  min-height: 60px;
}

textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

select,
input[type="number"] {
  padding: 0.5rem 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  cursor: pointer;
}

select:focus,
input[type="number"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="number"] {
  width: 60px;
}

input[type="text"] {
  padding: 0.5rem 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--accent);
}

button {
  padding: 0.625rem 1.5rem;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-weight: 500;
  font-size: 1.125rem; /* 18px - WCAG AA large text (passes at 3.6:1 contrast) */
  cursor: pointer;
  transition: all 0.2s ease;
}

button:hover:not(:disabled) {
  filter: brightness(1.1);
  box-shadow: 0 4px 12px rgba(255, 56, 34, 0.3);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  background: var(--bg-secondary);
}

.panel {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.panel h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.empty-state {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-style: italic;
}

.skill-item {
  padding: 0.75rem;
  background: var(--bg-primary);
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
  border: 1px solid var(--border);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.375rem;
}

.skill-header strong {
  font-size: 0.875rem;
  color: var(--text-primary);
}

.skill-category {
  font-size: 0.75rem;
  color: var(--accent);
  font-family: "SF Mono", Monaco, monospace;
}

.skill-desc {
  font-size: 0.813rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.citation {
  padding: 0.875rem;
  background: var(--bg-primary);
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
}

.citation-header {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.citation-text {
  font-size: 0.813rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.citation-link {
  font-size: 0.75rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.citation-link:hover {
  text-decoration: underline;
}

.error {
  color: var(--error);
}

.logout-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.logout-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

.error-banner {
  background: var(--error);
  color: white;
  padding: 1rem;
  text-align: center;
  font-weight: 500;
  border-bottom: 1px solid color-mix(in srgb, var(--error) 70%, black);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Session Management Styles */
.session-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.75rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.session-item:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
}

.session-item.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}

.session-item.active strong,
.session-item.active .session-meta {
  color: var(--bg-primary);
}

.session-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.session-header strong {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.session-delete-btn {
  background: transparent;
  border: 1px solid currentColor;
  color: var(--error);
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.session-delete-btn:hover {
  background: var(--error);
  color: white;
}

.session-item.active .session-delete-btn {
  color: var(--bg-primary);
  border-color: var(--bg-primary);
}

.session-item.active .session-delete-btn:hover {
  background: var(--bg-primary);
  color: var(--error);
}

.session-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.session-meta div {
  margin-bottom: 0.125rem;
}

.session-subagent {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

#sessions-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.pagination-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 0.375rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pagination-btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

#page-info {
  font-size: 0.813rem;
  color: var(--text-secondary);
}

@media (max-width: 968px) {
  main {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }

  .chat-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .sidebar {
    max-height: 40vh;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
  }
}