@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-deep: #070A12;
  --bg-surface: #0B1020;
  --bg-elevated: #0F1628;
  --bg-glass: rgba(11, 16, 32, 0.85);
  --bg-glass-hover: rgba(15, 22, 40, 0.95);
  --bg-input: rgba(7, 10, 18, 0.6);
  --accent: #A78BFA;
  --accent-blue: #6C7CFF;
  --accent-cyan: #38BDF8;
  --accent-green: #22C55E;
  --accent-red: #EF4444;
  --accent-orange: #F59E0B;
  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-tertiary: #64748B;
  --text-muted: #475569;
  --border: rgba(167, 139, 250, 0.12);
  --border-hover: rgba(167, 139, 250, 0.3);
  --glow: rgba(167, 139, 250, 0.12);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: 150ms cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --titlebar-h: 40px;
  --tab-h: 36px;
  --statusbar-h: 24px;
  --sidebar-w: 220px;
}

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

html, body {
  height: 100%; overflow: hidden;
  background: var(--bg-deep); color: var(--text-primary);
  font-family: var(--font); font-size: 13px; line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(167, 139, 250, 0.15); border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(167, 139, 250, 0.3); }
::selection { background: rgba(167, 139, 250, 0.25); }

kbd {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1px 5px; background: var(--bg-input);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: var(--font-mono); font-size: 9px; color: var(--text-tertiary);
  min-width: 16px;
}

/* ============ TITLEBAR ============ */

.titlebar {
  display: flex; align-items: center; height: var(--titlebar-h);
  background: var(--bg-surface); border-bottom: 1px solid var(--border);
  padding: 0 12px; user-select: none; flex-shrink: 0; z-index: 100;
  -webkit-app-region: drag;
}

.titlebar-left { display: flex; align-items: center; gap: 8px; }

.logo-icon {
  width: 20px; height: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  border-radius: var(--radius-sm); display: flex; align-items: center;
  justify-content: center; font-size: 11px; color: white; font-weight: 700;
}

.logo-text { font-size: 13px; font-weight: 600; color: var(--text-primary); }

.titlebar-center { flex: 1; display: flex; justify-content: center; }

.titlebar-path {
  font-size: 11px; color: var(--text-tertiary); font-family: var(--font-mono);
  padding: 2px 10px; background: var(--bg-deep); border-radius: var(--radius-sm);
  border: 1px solid var(--border); max-width: 350px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}

.titlebar-right {
  display: flex; align-items: center; gap: 4px; -webkit-app-region: no-drag;
}

.titlebar-btn {
  width: 28px; height: 28px; display: flex; align-items: center;
  justify-content: center; border: none; background: transparent;
  color: var(--text-tertiary); border-radius: var(--radius-sm);
  cursor: pointer; transition: all var(--transition); font-size: 13px;
}

.titlebar-btn:hover { background: var(--bg-glass-hover); color: var(--text-primary); }

/* ============ MAIN LAYOUT ============ */

.main-layout { display: flex; flex: 1; overflow: hidden; }

/* ============ SIDEBAR ============ */

.sidebar {
  width: var(--sidebar-w); min-width: 180px; max-width: 280px;
  background: var(--bg-surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
  flex-shrink: 0; transition: width var(--transition);
}

.sidebar.collapsed { width: 0 !important; min-width: 0; border: none; }

.sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-bottom: 1px solid var(--border);
  flex-shrink: 0; min-height: 36px;
}

.sidebar-title {
  font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.8px; color: var(--text-tertiary);
}

.sidebar-content { flex: 1; overflow-y: auto; padding: 8px 0; }

.sidebar-footer {
  padding: 10px 12px; border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 6px;
}

.user-count {
  font-size: 10px; font-weight: 600; color: var(--text-muted);
  background: var(--bg-elevated); padding: 1px 6px; border-radius: 8px;
}

.user-info-row {
  display: flex; align-items: center; gap: 6px; font-size: 11px;
}
.user-info-row .label { color: var(--text-tertiary); }
.user-info-row .value { color: var(--text-secondary); }
.user-info-row .value.mono { font-family: var(--font-mono); font-size: 10px; }

/* ============ USERS LIST ============ */

.collab-user {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px; transition: background var(--transition);
}

.collab-user:hover { background: rgba(167, 139, 250, 0.05); }
.collab-user.me { background: rgba(167, 139, 250, 0.08); }

.collab-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}

.collab-user .name {
  flex: 1; font-size: 12px; color: var(--text-primary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.collab-user .badge {
  font-size: 9px; color: var(--accent); font-weight: 600;
  text-transform: uppercase; background: rgba(167, 139, 250, 0.15);
  padding: 1px 5px; border-radius: 6px;
}

.empty-state {
  text-align: center; padding: 32px 16px;
  color: var(--text-muted); font-size: 11px; font-style: italic;
}

/* ============ EDITOR AREA ============ */

.editor-area {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
  background: var(--bg-deep); min-width: 0;
}

.tabs-bar {
  display: flex; align-items: center; height: var(--tab-h);
  background: var(--bg-surface); border-bottom: 1px solid var(--border);
  overflow-x: auto; overflow-y: hidden; flex-shrink: 0;
}
.tabs-bar::-webkit-scrollbar { height: 0; }

.tab {
  display: flex; align-items: center; gap: 6px; padding: 0 10px;
  height: 100%; max-width: 160px; background: transparent;
  border-right: 1px solid var(--border); cursor: pointer;
  transition: all var(--transition); user-select: none; flex-shrink: 0;
}
.tab:hover { background: rgba(167, 139, 250, 0.05); }
.tab.active { background: var(--bg-deep); border-bottom: 2px solid var(--accent); }
.tab.active::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 1px; background: linear-gradient(90deg, var(--accent), var(--accent-blue));
}
.tab .tab-name {
  flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 12px; color: var(--text-secondary);
}
.tab.active .tab-name { color: var(--text-primary); }
.tab .tab-dirty {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
}
.tab .tab-close {
  width: 16px; height: 16px; display: flex; align-items: center;
  justify-content: center; border: none; background: transparent;
  color: var(--text-muted); border-radius: 2px; cursor: pointer;
  font-size: 9px; opacity: 0; transition: all var(--transition);
}
.tab:hover .tab-close { opacity: 1; }
.tab .tab-close:hover { background: rgba(239,68,68,0.2); color: var(--accent-red); }

.editor-container { flex: 1; overflow: hidden; position: relative; }

.editor-empty {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; height: 100%; gap: 16px; user-select: none;
}

.editor-empty .empty-icon {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--glow), rgba(108,124,255,0.1));
  border-radius: var(--radius-lg); display: flex; align-items: center;
  justify-content: center; font-size: 28px; font-weight: 700;
  font-family: var(--font-mono); color: var(--accent);
  border: 1px solid var(--border); box-shadow: 0 0 30px var(--glow);
}

.editor-empty h2 { font-size: 18px; font-weight: 500; color: var(--text-secondary); }
.editor-empty p { font-size: 13px; color: var(--text-muted); }

.shortcut-hints {
  display: flex; gap: 16px; margin-top: 4px;
}
.shortcut-hints span {
  display: flex; align-items: center; gap: 4px;
  font-size: 11px; color: var(--text-muted);
}

/* ============ CONSOLE ============ */

.console-panel {
  display: none; flex-direction: column; height: 180px; min-height: 80px;
  max-height: 350px; background: var(--bg-surface);
  border-top: 1px solid var(--border); flex-shrink: 0;
}
.console-panel.visible { display: flex; }

.console-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 4px 12px; border-bottom: 1px solid var(--border);
  flex-shrink: 0; min-height: 28px;
}

.console-header-left { display: flex; align-items: center; gap: 6px; }
.console-icon { font-size: 10px; color: var(--accent-green); }
.console-title {
  font-size: 11px; font-weight: 600; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.5px;
}

.console-header-right { display: flex; gap: 4px; }

.console-btn {
  padding: 2px 8px; background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-tertiary);
  font-size: 10px; font-family: var(--font); cursor: pointer;
  transition: all var(--transition);
}
.console-btn:hover { background: rgba(167,139,250,0.1); color: var(--text-primary); }

.console-body {
  flex: 1; overflow-y: auto; padding: 8px 12px;
  font-family: var(--font-mono); font-size: 12px; line-height: 1.6;
  background: rgba(0,0,0,0.25);
}

.console-empty {
  color: var(--text-muted); font-style: italic; padding: 16px 0;
  text-align: center; font-family: var(--font); font-size: 11px;
}

.console-line {
  display: flex; gap: 8px; padding: 1px 0; word-break: break-all;
}
.console-line-icon { flex-shrink: 0; width: 14px; text-align: center; font-size: 10px; }
.console-line-text { flex: 1; }

.console-info .console-line-icon { color: var(--accent-cyan); }
.console-info .console-line-text { color: var(--text-secondary); }
.console-success .console-line-icon,
.console-success .console-line-text { color: var(--accent-green); }
.console-error .console-line-icon,
.console-error .console-line-text { color: var(--accent-red); }
.console-warning .console-line-icon,
.console-warning .console-line-text { color: var(--accent-orange); }
.console-output .console-line-icon { color: var(--text-tertiary); }
.console-output .console-line-text { color: var(--text-primary); }
.console-command .console-line-icon { color: var(--accent); }
.console-command .console-line-text { color: var(--text-tertiary); }

/* ============ RUN BUTTON ============ */

.run-btn {
  position: absolute; top: 8px; right: 10px; z-index: 100;
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--accent-green), #16a34a);
  border: none; border-radius: var(--radius-md); color: white;
  font-size: 12px; font-weight: 600; font-family: var(--font);
  cursor: pointer; transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(34,197,94,0.3);
}
.run-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(34,197,94,0.4); }
.run-btn:active { transform: translateY(0); }
.run-btn .icon { font-size: 11px; }

/* ============ STATUSBAR ============ */

.statusbar {
  display: flex; align-items: center; height: var(--statusbar-h);
  background: var(--accent); padding: 0 12px; gap: 12px;
  font-size: 11px; color: rgba(255,255,255,0.9); flex-shrink: 0; z-index: 100;
}

.statusbar-left { display: flex; align-items: center; gap: 12px; }
.statusbar-center {
  display: flex; align-items: center; gap: 8px;
}
.statusbar-right {
  display: flex; align-items: center; gap: 12px; margin-left: auto;
}

.statusbar-item {
  display: flex; align-items: center; gap: 4px; cursor: default;
  padding: 0 4px; height: 100%; transition: background var(--transition);
}
.statusbar-item:hover { background: rgba(255,255,255,0.1); }

.collab-status { display: flex !important; align-items: center; gap: 6px; }
.collab-dot {
  width: 7px; height: 7px; border-radius: 50%; display: inline-block;
}
.collab-dot.online { background: var(--accent-green); box-shadow: 0 0 5px var(--accent-green); }
.collab-dot.offline { background: #666; opacity: 0.6; }

/* ============ MODALS & OVERLAYS ============ */

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(7,10,18,0.8); backdrop-filter: blur(8px);
  display: none; align-items: center; justify-content: center;
  z-index: 10001;
}
.modal-overlay.visible { display: flex; }

.modal {
  background: var(--bg-glass); backdrop-filter: blur(24px);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 24px; min-width: 360px; max-width: 480px;
  box-shadow: var(--shadow-lg);
}

.modal-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.modal-desc { font-size: 12px; color: var(--text-tertiary); margin-bottom: 16px; }

.modal-input {
  width: 100%; padding: 8px 12px; background: var(--bg-input);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  color: var(--text-primary); font-size: 13px; font-family: var(--font);
  outline: none; transition: border-color var(--transition);
}
.modal-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow); }
.modal-input::placeholder { color: var(--text-muted); }

.modal-actions {
  display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px;
}

/* ============ BUTTONS ============ */

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px; border: none; border-radius: var(--radius-md);
  font-size: 12px; font-weight: 500; font-family: var(--font);
  cursor: pointer; transition: all var(--transition); user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  color: white; box-shadow: 0 2px 8px rgba(167,139,250,0.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(167,139,250,0.4); }

.btn-secondary {
  background: var(--bg-glass-hover); color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: rgba(167,139,250,0.1); color: var(--text-primary); border-color: var(--border-hover); }

.btn-sm { padding: 4px 10px; font-size: 11px; }

/* ============ CONTEXT MENU ============ */

.context-menu {
  position: fixed; min-width: 160px;
  background: var(--bg-glass); backdrop-filter: blur(20px);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 4px; box-shadow: var(--shadow-lg); z-index: 10000;
  display: none;
}
.context-menu.visible { display: block; }

.context-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px; font-size: 12px; color: var(--text-secondary);
  cursor: pointer; border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.context-item:hover { background: rgba(167,139,250,0.1); color: var(--text-primary); }
.context-item.danger:hover { background: rgba(239,68,68,0.1); color: var(--accent-red); }
.context-divider { height: 1px; background: var(--border); margin: 4px 8px; }

/* ============ REMOTE CURSORS ============ */

.remote-selection { opacity: 0.25; border-radius: 2px; }

.remote-cursor-el {
  display: inline-block !important;
  position: relative;
  pointer-events: none;
}

.remote-cursor-label {
  position: absolute;
  left: 0;
  top: -16px;
  font-size: 9px;
  font-family: Inter, sans-serif;
  font-weight: 600;
  color: white;
  padding: 0 4px;
  border-radius: 3px;
  white-space: nowrap;
  line-height: 16px;
  pointer-events: none;
  z-index: 100;
}

/* ============ CodeMirror Overrides ============ */

.CodeMirror {
  height: 100% !important;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 14px;
  line-height: 1.6;
}

.CodeMirror-gutters {
  background: #0B1020 !important;
  border-right: 1px solid rgba(167, 139, 250, 0.1) !important;
}

.CodeMirror-linenumber {
  color: #475569 !important;
  padding: 0 8px 0 4px !important;
}

.CodeMirror-activeline-background {
  background: rgba(167, 139, 250, 0.05) !important;
}

.CodeMirror-cursor {
  border-left: 2px solid #A78BFA !important;
}

.CodeMirror-selected {
  background: rgba(167, 139, 250, 0.2) !important;
}

.cm-s-material-darker .cm-keyword { color: #A78BFA; }
.cm-s-material-darker .cm-string { color: #22C55E; }
.cm-s-material-darker .cm-number { color: #F59E0B; }
.cm-s-material-darker .cm-type { color: #38BDF8; }
.cm-s-material-darker .cm-def { color: #6C7CFF; }
.cm-s-material-darker .cm-comment { color: #64748B; font-style: italic; }
.cm-s-material-darker .cm-operator { color: #E2E8F0; }
.cm-s-material-darker .cm-variable { color: #E2E8F0; }
.cm-s-material-darker .cm-atom { color: #F06595; }

/* ============ RESPONSIVE ============ */

@media (max-width: 768px) {
  .sidebar { position: absolute; left: 0; top: 0; bottom: 0; z-index: 50; }
  .sidebar.collapsed { transform: translateX(-100%); }
  .titlebar-path { display: none; }
  .statusbar-center { display: none; }
  .modal { min-width: unset; width: 90vw; }
}