/* Dark theme (default) */
:root {
  --bg-primary: #1e1e1e;
  --bg-secondary: #2d2d2d;
  --bg-secondary-alt: #353535;
  --bg-hover: #3d3d3d;
  --text-normal: #d4d4d4;
  --text-muted: #808080;
  --text-on-accent: #ffffff;
  --accent: #4a9eff;
  --border: #404040;
  --error: #f87171;
  --warning: #e6a700;
  --success: #4ade80;
  --side-bg: #181818;
}

/* Light theme via attribute */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f3f4f6;
  --bg-secondary-alt: #e5e7eb;
  --bg-hover: #d1d5db;
  --text-normal: #1f2937;
  --text-muted: #6b7280;
  --text-on-accent: #ffffff;
  --accent: #2563eb;
  --border: #d1d5db;
  --error: #dc2626;
  --warning: #d97706;
  --success: #16a34a;
  --side-bg: #f0f0f0;
}

/* System preference when theme=system (no data-theme attr) */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-secondary-alt: #e5e7eb;
    --bg-hover: #d1d5db;
    --text-normal: #1f2937;
    --text-muted: #6b7280;
    --text-on-accent: #ffffff;
    --accent: #2563eb;
    --border: #d1d5db;
    --error: #dc2626;
    --warning: #d97706;
    --success: #16a34a;
    --side-bg: #f0f0f0;
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-normal);
  height: 100vh;
  overflow: hidden;
}

/* Login */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.login-box {
  text-align: center;
  padding: 48px;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.login-box h1 { margin-bottom: 8px; font-size: 1.5em; }
.login-box p { color: var(--text-muted); margin-bottom: 24px; }

.login-btn {
  padding: 12px 32px;
  background: #ff9900;
  color: #000;
  border: none;
  border-radius: 6px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
}
.login-btn:hover { background: #ffad33; }

/* App layout */
.app-layout {
  display: flex;
  height: 100vh;
  position: relative;
}

/* Side panel */
.side-panel {
  width: 260px;
  min-width: 260px;
  background: var(--side-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  gap: 8px;
  overflow: hidden;
  transition: width 0.2s, min-width 0.2s, padding 0.2s, opacity 0.2s;
}
.side-panel.collapsed {
  width: 0 !important;
  min-width: 0 !important;
  padding: 0 !important;
  opacity: 0;
  pointer-events: none;
}

.side-resize {
  width: 4px;
  cursor: col-resize;
  background: transparent;
  flex-shrink: 0;
}
.side-resize:hover, .side-resize.dragging { background: var(--accent); }
.side-panel.collapsed ~ .side-resize { display: none; }

.side-toggle {
  position: absolute;
  top: 12px;
  left: 260px;
  z-index: 50;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 0 6px 6px 0;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.7em;
  padding: 6px 4px;
  line-height: 1;
  transition: left 0.2s;
}
.side-toggle:hover { color: var(--text-normal); background: var(--bg-hover); }
.side-toggle.collapsed { left: 0; }

.side-logo {
  max-width: 100%;
  height: 40px;
  align-self: center;
  margin-bottom: 4px;
  object-fit: contain;
}

/* Invert logo for light theme */
[data-theme="light"] .side-logo { filter: invert(1) hue-rotate(180deg); mix-blend-mode: multiply; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .side-logo { filter: invert(1) hue-rotate(180deg); mix-blend-mode: multiply; }
}

.side-user {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.side-username {
  font-size: 0.85em;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-btn {
  padding: 6px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.8em;
  cursor: pointer;
  text-align: center;
}
.side-btn:hover { background: var(--bg-hover); color: var(--text-normal); }

.side-section-label {
  font-size: 0.75em;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 8px;
}

.chat-history-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-history-item {
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.85em;
  cursor: pointer;
  color: var(--text-normal);
  position: relative;
}
.chat-history-item:hover { background: var(--bg-hover); }
.chat-history-item.active { background: var(--accent); color: var(--text-on-accent); }

.item-preview {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding-right: 24px;
}

.chat-history-item .item-more {
  display: none;
  position: absolute;
  right: 6px;
  top: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1em;
  line-height: 1;
  padding: 1px 5px;
}
.chat-history-item:hover .item-more,
.chat-history-item .item-more.open { display: inline-block; }
.chat-history-item.active .item-more { background: var(--accent); border-color: rgba(255,255,255,0.3); color: var(--text-on-accent); }

.item-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 0;
  min-width: 140px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  z-index: 100;
  white-space: nowrap;
}
.item-dropdown div {
  padding: 6px 12px;
  font-size: 0.85em;
  cursor: pointer;
  color: var(--text-normal);
}
.item-dropdown div:hover { background: var(--bg-hover); }
.item-dropdown div.danger { color: var(--error); }

.chat-history-item .pin-indicator { margin-right: 4px; font-size: 0.8em; }

.chat-history-item .rename-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--text-normal);
  font-size: inherit;
  padding: 2px 4px;
  outline: none;
}

.chat-history-meta {
  font-size: 0.75em;
  color: var(--text-muted);
}
.chat-history-item.active .chat-history-meta { color: rgba(255,255,255,0.7); }

.side-new-chat { margin-top: auto; text-align: center; }

/* Chat container */
.chat-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100vh;
  padding: 8px;
  min-width: 0;
}

/* Messages */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  user-select: text;
  -webkit-user-select: text;
}

.message {
  margin-bottom: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  max-width: 90%;
  position: relative;
  line-height: 1.65;
}

.message-text { flex: 1; line-height: 1.6; }
.message-text p { margin: 0.6em 0; }
.message-text p:first-child { margin-top: 0; }
.message-text p:last-child { margin-bottom: 0; }
.message-text ul, .message-text ol { padding-left: 1.5em; margin: 0.6em 0; line-height: 1.6; }
.message-text li { margin: 0.3em 0; }

.message-text table { border-collapse: collapse; width: 100%; margin: 0.5em 0; font-size: 0.9em; }
.message-text th, .message-text td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
.message-text th { background: var(--bg-secondary-alt); font-weight: 600; }
.message-text tr:nth-child(even) { background: var(--bg-secondary); }

.message-text pre { background: var(--bg-secondary-alt); padding: 12px; border-radius: 6px; overflow-x: auto; margin: 0.75em 0; line-height: 1.5; }
.message-text hr { margin: 1em 0; border: none; border-top: 1px solid var(--border); }
.message-text code { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.9em; }
.message-text :not(pre) > code { background: var(--bg-secondary-alt); padding: 2px 4px; border-radius: 3px; }

.copy-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  opacity: 0;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8em;
  transition: opacity 0.2s;
}
.message:hover .copy-btn { opacity: 0.6; }
.copy-btn:hover { opacity: 1 !important; background: var(--bg-hover); }

.msg-user {
  background: var(--accent);
  color: var(--text-on-accent);
  margin-left: auto;
}
.msg-user ::selection { background: rgba(255,255,255,0.4); color: inherit; }

.msg-command {
  background: var(--bg-secondary) !important;
  color: var(--text-muted) !important;
  font-family: monospace;
  font-size: 0.85em;
}

.msg-assistant { background: var(--bg-secondary); }
.msg-error { color: var(--error); }

.tool-status {
  display: inline;
  font-size: 0.85em;
  color: var(--text-muted);
  margin-right: 6px;
}

.date-separator {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8em;
  margin: 16px 0;
}
.date-separator::before, .date-separator::after {
  content: "";
  flex: 1;
  border-bottom: 1px solid var(--border);
}
.date-separator::before { margin-right: 10px; }
.date-separator::after { margin-left: 10px; }

/* Welcome screen */
.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.welcome-logo { height: 60px; object-fit: contain; }
[data-theme="light"] .welcome-logo { filter: invert(1) hue-rotate(180deg); mix-blend-mode: multiply; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .welcome-logo { filter: invert(1) hue-rotate(180deg); mix-blend-mode: multiply; }
}
.welcome-text { color: var(--text-secondary); font-size: 1.1em; margin: 0; }

/* Input area */
.input-container {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.resize-handle {
  height: 8px;
  cursor: ns-resize;
  background: var(--accent);
  border-radius: 4px 4px 0 0;
}

.chat-input {
  resize: none;
  min-height: 60px;
  height: 60px;
  padding: 8px;
  border-radius: 0 0 4px 4px;
  border: 1px solid var(--border);
  border-top: none;
  background: var(--bg-primary);
  color: var(--text-normal);
  font-family: inherit;
  font-size: 0.95em;
  outline: none;
}
.chat-input:focus { border-color: var(--accent); }

/* Status bar */
.status-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.75em;
  color: var(--text-muted);
  padding: 4px 0;
}

.status-label { opacity: 0.7; white-space: nowrap; }
.status-group { display: inline-flex; align-items: center; gap: 4px; margin-right: 8px; white-space: nowrap; }
.status-spacer { flex: 1; }

.model-select {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-normal);
  font-size: inherit;
  cursor: pointer;
  padding: 2px 4px;
}

.token-status { font-weight: 500; }
.token-warning { color: var(--warning) !important; }
.token-danger { color: var(--error) !important; font-weight: 600; }

.icon-btn {
  padding: 4px 8px;
  cursor: pointer;
  background: transparent;
  border: none;
  color: var(--text-muted);
  border-radius: 4px;
  font-size: 1.1em;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text-normal); }
.icon-btn:disabled { opacity: 0.3; pointer-events: none; }
.send-btn { color: var(--accent); }

.activity {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.85em;
  padding: 4px 0;
}

/* Chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.8em;
  color: var(--text-muted);
  max-width: 100%;
  overflow: hidden;
}
.chip span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip-dismiss { cursor: pointer; color: var(--text-muted); flex-shrink: 0; }
.chip-dismiss:hover { color: var(--text-normal); }
.chip-thumb { width: 32px; height: auto; border-radius: 3px; flex-shrink: 0; }

.chat-image { max-width: 100%; max-height: 400px; border-radius: 8px; margin: 8px 0; cursor: pointer; }

.attachment-chip {
  display: inline-block;
  padding: 3px 8px;
  background: rgba(255,255,255,0.15);
  border-radius: 12px;
  font-size: 0.8em;
  margin-top: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* Settings modal */
.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.settings-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  min-width: 320px;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.settings-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1em;
  margin-bottom: 10px;
}
.settings-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4em;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}
.settings-close:hover { color: var(--text-normal); }
.prompt-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  width: 90%;
  max-width: 700px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.prompt-textarea {
  flex: 1;
  min-height: 300px;
  background: var(--bg-primary);
  color: var(--text-normal);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  font-family: monospace;
  font-size: 0.8em;
  resize: vertical;
  line-height: 1.5;
}
.prompt-textarea:focus { outline: 1px solid var(--accent); }
.prompt-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  gap: 8px;
}
.prompt-counter { font-size: 0.75em; color: var(--text-muted); }
.prompt-counter.over-limit { color: #e55; }
.prompt-actions { display: flex; gap: 6px; }
.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  font-size: 0.8em;
  cursor: pointer;
}
.setting-row select {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-normal);
  padding: 2px 4px;
  font-size: inherit;
}
.setting-row input[type="range"] { width: 80px; }
.setting-row input[type="range"]:disabled { opacity: 0.3; }

/* Loading overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Debug panel */
.debug-panel {
  width: 320px;
  min-width: 200px;
  background: var(--side-bg);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.2s, min-width 0.2s, opacity 0.2s;
}
.debug-panel.collapsed {
  width: 0 !important;
  min-width: 0 !important;
  opacity: 0;
  pointer-events: none;
}

.debug-resize {
  width: 4px;
  cursor: col-resize;
  background: transparent;
  flex-shrink: 0;
}
.debug-resize:hover, .debug-resize.dragging { background: var(--accent); }

.debug-toggle {
  position: absolute;
  top: 12px;
  right: 0;
  z-index: 50;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px 0 0 6px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.7em;
  padding: 6px 4px;
  line-height: 1;
  transition: right 0.2s;
}
.debug-toggle:hover { color: var(--text-normal); background: var(--bg-hover); }

.debug-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  font-size: 0.85em;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.debug-actions { display: flex; gap: 4px; }

.debug-log {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.75em;
  line-height: 1.5;
}

.debug-entry {
  padding: 3px 0;
  border-bottom: 1px solid var(--border);
  word-break: break-all;
}
.debug-entry .debug-time { color: var(--text-muted); margin-right: 6px; }
.debug-entry.debug-error { color: var(--error); }
.debug-entry.debug-warn { color: var(--warning); }
.debug-entry.debug-info { color: var(--text-normal); }
.debug-entry.debug-success { color: var(--success); }