:root {
  --bg: #0d0d0d;
  --bg-2: #141414;
  --bg-3: #1a1a1a;
  --bg-4: #222;
  --fg: #e8e8e8;
  --fg-2: #a0a0a0;
  --accent: #d4a373;
  --accent-2: #a8c5b5;
  --danger: #c97b7b;
  --border: #2a2a2a;
  --sidebar-w: 260px;
  --header-h: 52px;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,0.5);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--fg);
  height: 100vh;
  width: 100%;
  min-width: 100vw;
  overflow: hidden;
  display: flex;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: transform .3s;
  flex-shrink: 0;
}
.sidebar-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo { font-size: 18px; font-weight: 700; letter-spacing: 1px; color: var(--accent); }
.sidebar-scroll { flex: 1; overflow-y: auto; padding: 8px; }
.project-block { margin-bottom: 8px; }
.project-header {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 10px; border-radius: 6px;
  cursor: pointer; user-select: none;
  transition: background .15s;
}
.project-header:hover { background: var(--bg-3); }
.project-header.active { background: var(--bg-4); }
.chevron { font-size: 10px; color: var(--fg-2); transition: transform .2s; }
.project-header.open .chevron { transform: rotate(90deg); }
.project-name { font-weight: 600; font-size: 14px; }
.task-list { padding-left: 20px; display: none; }
.task-list.open { display: block; }
.task-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; border-radius: 6px; cursor: pointer;
  font-size: 13px; color: var(--fg-2); transition: all .15s;
}
.task-item:hover { background: var(--bg-3); color: var(--fg); }
.task-item.active { background: var(--bg-4); color: var(--accent); }
.task-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--fg-2); flex-shrink: 0; }
.task-item.active .task-dot { background: var(--accent); }
.task-badge {
  margin-left: auto; font-size: 10px; padding: 1px 5px; border-radius: 4px;
  background: var(--bg-4); color: var(--fg-2);
}
.add-btn {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px; border-radius: 6px; cursor: pointer;
  border: 1px dashed var(--border); color: var(--fg-2);
  font-size: 13px; transition: all .15s; margin-top: 8px;
}
.add-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Main ===== */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; position: relative; }
.topbar {
  height: var(--header-h); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; background: var(--bg-2);
  flex-shrink: 0;
}
.breadcrumbs { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.bc-sep { color: var(--fg-2); }
.bc-project { color: var(--fg-2); }
.bc-task { font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

/* User menu */
.user-menu { position: relative; }
.user-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent); color: #1a1200;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; cursor: pointer;
  user-select: none; transition: opacity .15s;
}
.user-avatar:hover { opacity: 0.85; }
.user-dropdown {
  position: absolute; top: 40px; right: 0;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 0;
  min-width: 160px; box-shadow: var(--shadow);
  z-index: 100;
}
.user-dropdown.hidden { display: none; }
.user-name { padding: 0 14px; font-size: 14px; font-weight: 600; color: var(--fg); }
.user-role { padding: 0 14px; font-size: 11px; color: var(--fg-2); text-transform: capitalize; margin-bottom: 4px; }
.dropdown-divider { height: 1px; background: var(--border); margin: 6px 0; }
.dropdown-item {
  display: block; width: 100%; padding: 8px 14px;
  background: none; border: none; color: var(--fg);
  font-size: 13px; text-align: left; cursor: pointer;
}
.dropdown-item:hover { background: var(--bg-4); }

.agent-pill {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 20px; font-size: 12px;
  background: var(--bg-3); border: 1px solid var(--border); cursor: pointer;
  transition: all .15s;
}
.agent-pill:hover { border-color: var(--accent); }
.agent-pill .dot { width: 7px; height: 7px; border-radius: 50%; }
.agent-pill.claude .dot { background: var(--accent-2); box-shadow: 0 0 6px var(--accent-2); }
.agent-pill.hermes .dot { background: #8ab4f8; box-shadow: 0 0 6px #8ab4f8; }
.local-agent-pill {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 20px; font-size: 12px;
  background: var(--bg-3); border: 1px solid var(--border); cursor: pointer;
  transition: all .15s;
}
.local-agent-pill:hover { border-color: var(--accent); }
.local-agent-pill .local-dot { width: 7px; height: 7px; border-radius: 50%; background: #666; }
.local-agent-pill.online .local-dot { background: #4ade80; box-shadow: 0 0 6px #4ade80; }
.local-agent-pill.offline .local-dot { background: #ef4444; box-shadow: 0 0 6px #ef4444; }
.local-agent-pill.online { border-color: #4ade80; }
.setup-step { display: flex; gap: 12px; margin-bottom: 16px; }
.setup-step-num { width: 24px; height: 24px; border-radius: 50%; background: var(--accent); color: #1a1200; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
.setup-step-content { flex: 1; }
.setup-step-title { font-size: 13px; font-weight: 600; color: var(--fg); margin-bottom: 4px; }
.setup-step-desc { font-size: 12px; color: var(--fg-2); line-height: 1.6; }
.setup-step-desc code { background: var(--bg-2); padding: 2px 6px; border-radius: 4px; font-size: 11px; font-family: 'SF Mono', monospace; }
.btn {
  padding: 6px 14px; border-radius: 6px; font-size: 13px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg-3); color: var(--fg);
  transition: all .15s; display: flex; align-items: center; gap: 5px;
}
.btn:hover { background: var(--bg-4); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #1a1200; border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: #c49464; }
.btn-primary:disabled { background: var(--bg-4); color: var(--fg-2); border-color: var(--border); }

/* ===== Phase Navigation ===== */
.phase-nav {
  display: flex; align-items: center; gap: 4px;
  padding: 10px 20px; background: var(--bg-2);
  border-bottom: 1px solid var(--border); overflow-x: auto;
  flex-shrink: 0;
}
.phase-item {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 6px; font-size: 12px;
  background: var(--bg-3); border: 1px solid var(--border);
  color: var(--fg-2); cursor: pointer; transition: all .15s; white-space: nowrap;
}
.phase-item:hover { border-color: var(--accent); }
.phase-item.active { background: rgba(212,163,115,0.1); border-color: var(--accent); color: var(--accent); }
.phase-item.done { background: rgba(168,197,181,0.08); border-color: var(--accent-2); color: var(--accent-2); }
.phase-item.done::before { content: '\2713'; font-size: 10px; }
.phase-arrow { color: var(--fg-2); font-size: 10px; }
.phase-actions { margin-left: auto; display: flex; gap: 8px; }
.btn-handoff {
  padding: 5px 12px; border-radius: 6px; font-size: 12px;
  background: var(--accent); color: #1a1200; border: none;
  cursor: pointer; font-weight: 600; transition: all .15s;
}
.btn-handoff:hover { background: #c49464; }
.btn-handoff:disabled { background: var(--bg-4); color: var(--fg-2); cursor: not-allowed; }
.btn-skip {
  padding: 5px 12px; border-radius: 6px; font-size: 12px;
  background: transparent; color: var(--fg-2); border: 1px solid var(--border);
  cursor: pointer; transition: all .15s;
}
.btn-skip:hover { border-color: var(--fg-2); color: var(--fg); }
.btn-skip:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== Chat Area ===== */
.chat-scroll {
  flex: 1; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column;
  gap: 16px;
}
.empty-hint {
  color: var(--fg-2); text-align: center; padding: 40px 20px;
  font-size: 14px; line-height: 1.8;
}
.msg { animation: fadeIn .3s ease; max-width: 80%; }
.msg.user { align-self: flex-end; }
.msg.assistant { align-self: flex-start; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.msg-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.msg-avatar {
  width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.msg-avatar.user { background: var(--bg-4); color: var(--accent); }
.msg-avatar.assistant { background: #1a2e1a; color: var(--accent-2); }
.msg-role { font-size: 13px; font-weight: 600; }
.msg-time { font-size: 11px; color: var(--fg-2); margin-left: auto; }
.msg-body {
  padding: 12px 16px; border-radius: var(--radius);
  background: var(--bg-3); line-height: 1.7; font-size: 14px;
  border: 1px solid var(--border); word-break: break-word;
}
.msg.user .msg-body { background: var(--bg-4); }
.msg-body code {
  background: var(--bg); padding: 2px 5px; border-radius: 4px; font-family: 'SF Mono', Monaco, monospace; font-size: 12px;
}
.msg-body pre {
  background: var(--bg); padding: 12px; border-radius: 6px; overflow-x: auto; margin: 8px 0;
}
.msg-body pre code { padding: 0; background: none; border: none; }

/* Markdown rendering */
.msg-body h1, .msg-body h2, .msg-body h3, .msg-body h4, .msg-body h5, .msg-body h6 {
  color: var(--fg); font-weight: 600; margin: 16px 0 8px; line-height: 1.4;
}
.msg-body h1 { font-size: 18px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.msg-body h2 { font-size: 16px; border-bottom: 1px solid var(--border); padding-bottom: 4px; }
.msg-body h3 { font-size: 15px; }
.msg-body h4 { font-size: 14px; }
.msg-body h5, .msg-body h6 { font-size: 13px; color: var(--fg-2); }
.msg-body p { margin: 0 0 10px; }
.msg-body p:last-child { margin-bottom: 0; }
.msg-body ul, .msg-body ol { margin: 8px 0 8px 20px; padding-left: 0; }
.msg-body li { margin-bottom: 4px; }
.msg-body li > ul, .msg-body li > ol { margin-top: 4px; }
.msg-body blockquote {
  border-left: 3px solid var(--accent); background: var(--bg-4);
  padding: 8px 12px; margin: 10px 0; border-radius: 0 6px 6px 0; color: var(--fg-2);
}
.msg-body blockquote p:last-child { margin-bottom: 0; }
.msg-body a { color: var(--accent-2); text-decoration: none; }
.msg-body a:hover { text-decoration: underline; }
.msg-body table {
  border-collapse: collapse; width: 100%; margin: 10px 0; font-size: 13px;
}
.msg-body th, .msg-body td {
  border: 1px solid var(--border); padding: 6px 10px; text-align: left;
}
.msg-body th { background: var(--bg-4); font-weight: 600; }
.msg-body tr:nth-child(even) { background: var(--bg-4); }
.msg-body hr {
  border: none; border-top: 1px solid var(--border); margin: 14px 0;
}
.msg-body img { max-width: 100%; border-radius: 6px; }
.msg-body strong { color: var(--fg); font-weight: 600; }
.msg-attachment {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 8px; border-radius: 4px; background: var(--bg-4);
  font-size: 12px; color: var(--fg-2); margin-top: 6px;
}

/* ===== File Attachments in Message ===== */
.file-attachments { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.file-attachments img { max-width: 240px; max-height: 160px; border-radius: 6px; cursor: pointer; object-fit: cover; }
.file-attachments a { color: var(--fg-2); text-decoration: underline; opacity: 0.85; font-size: 12px; }

/* ===== Input ===== */
.input-area {
  border-top: 1px solid var(--border); padding: 14px 20px 20px; background: var(--bg-2);
  flex-shrink: 0;
}
.input-box {
  display: flex; gap: 10px; align-items: flex-end;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px 14px; transition: border-color .15s;
}
.input-box:focus-within { border-color: var(--accent); }
.input-box textarea {
  flex: 1; background: none; border: none; color: var(--fg); font-size: 14px; line-height: 1.6;
  resize: none; outline: none; min-height: 20px; max-height: 120px; font-family: inherit;
}
.input-box textarea::placeholder { color: var(--fg-2); }
.input-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; border: none; background: var(--bg-4); color: var(--fg-2); font-size: 16px;
  transition: all .15s;
}
.icon-btn:hover { background: var(--accent); color: #1a1200; }
.send-btn { background: var(--accent) !important; color: #1a1200 !important; }
.send-btn:hover { background: #c49464 !important; }
.send-btn:disabled { background: var(--bg-4) !important; color: var(--fg-2) !important; cursor: not-allowed; }

/* ===== Attachments Bar ===== */
#attachments { display: flex; gap: 8px; flex-wrap: wrap; padding: 0 0 10px; }
.attachment {
  display: flex; align-items: center; gap: 4px;
  padding: 4px 8px; background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 4px; font-size: 12px; max-width: 200px;
}
.attachment img { width: 32px; height: 32px; object-fit: cover; border-radius: 4px; }
.attachment-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--fg-2); }
.local-tag { font-size: 10px; background: var(--accent); color: #1a1200; padding: 1px 4px; border-radius: 3px; margin-left: 2px; }
.attachment button { border: none; background: none; cursor: pointer; color: var(--fg-2); font-size: 14px; line-height: 1; padding: 0 2px; }
.attachment button:hover { color: var(--danger); }

/* ===== Modal Overlay ===== */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center; z-index: 100;
  backdrop-filter: blur(4px);
}
.overlay.hidden { display: none; }
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center; z-index: 100;
  backdrop-filter: blur(4px);
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 14px;
  width: 600px; max-width: 90vw; max-height: 85vh; display: flex; flex-direction: column;
  box-shadow: var(--shadow); animation: modalIn .25s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }
.modal-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 16px; font-weight: 700; }
.modal-close { cursor: pointer; color: var(--fg-2); font-size: 20px; }
.modal-close:hover { color: var(--fg); }
.modal-body { flex: 1; overflow-y: auto; padding: 16px 20px; }
.modal-footer {
  padding: 14px 20px; border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
}

/* ===== Agent Switcher ===== */
.agent-option {
  display: flex; align-items: center; gap: 14px;
  padding: 14px; border-radius: 10px; border: 1px solid var(--border);
  cursor: pointer; transition: all .15s; margin-bottom: 10px;
}
.agent-option:hover { border-color: var(--accent); background: var(--bg-3); }
.agent-option.selected { border-color: var(--accent); background: rgba(212,163,115,0.08); }
.agent-icon {
  width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.agent-info h4 { font-size: 14px; margin-bottom: 3px; }
.agent-info p { font-size: 12px; color: var(--fg-2); }
.agent-check { margin-left: auto; color: var(--accent); font-size: 18px; }

/* ===== Workflow Config ===== */
.workflow-config { padding: 4px 0; }
.phase-config-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.phase-config-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  background: var(--bg-3); border: 1px solid var(--border);
  transition: all .15s;
}
.phase-config-item:hover { border-color: var(--accent); }
.phase-config-drag { color: var(--fg-2); cursor: grab; font-size: 14px; padding: 2px; }
.phase-config-num {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg-4); color: var(--fg-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600; flex-shrink: 0;
}
.phase-config-input {
  flex: 1; padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--fg); font-size: 13px; outline: none;
}
.phase-config-input:focus { border-color: var(--accent); }
.phase-config-input::placeholder { color: var(--fg-2); }
.phase-config-agent {
  padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--fg); font-size: 12px; outline: none;
  cursor: pointer;
}
.phase-config-agent option { background: var(--bg-3); color: var(--fg); }
.phase-config-remove {
  color: var(--danger); cursor: pointer; font-size: 16px;
  padding: 4px; opacity: 0.6; transition: opacity .15s;
}
.phase-config-remove:hover { opacity: 1; }
.btn-add-phase {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px; border-radius: 8px; cursor: pointer;
  border: 1px dashed var(--border); color: var(--fg-2);
  font-size: 13px; transition: all .15s; width: 100%;
  background: transparent;
}
.btn-add-phase:hover { border-color: var(--accent); color: var(--accent); }
.workflow-preview {
  margin-top: 16px; padding: 12px;
  background: var(--bg-3); border-radius: 8px;
  border: 1px solid var(--border);
}
.workflow-preview-title { font-size: 12px; color: var(--fg-2); margin-bottom: 8px; }
.workflow-preview-flow {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  font-size: 12px;
}
.workflow-preview-step {
  padding: 3px 8px; border-radius: 4px;
  background: var(--bg-4); color: var(--fg);
}
.workflow-preview-arrow { color: var(--fg-2); font-size: 10px; }

/* ===== Publish / Handoff Check Items ===== */
.check-group { margin-bottom: 18px; }
.check-title { font-size: 13px; font-weight: 600; margin-bottom: 8px; color: var(--fg-2); text-transform: uppercase; letter-spacing: 0.5px; }
.check-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 6px; cursor: pointer; font-size: 13px;
  transition: background .15s; color: var(--fg);
}
.check-item:hover { background: var(--bg-3); }
.check-item input[type="checkbox"] { accent-color: var(--accent); }
.check-preview {
  margin-left: auto; font-size: 11px; color: var(--fg-2); max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.form-row { display: flex; gap: 12px; margin-bottom: 12px; }
.form-group { flex: 1; }
.form-group label { display: block; font-size: 12px; color: var(--fg-2); margin-bottom: 5px; }
.form-group input, .form-group select {
  width: 100%; padding: 8px 12px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg-3); color: var(--fg);
  font-size: 13px; outline: none; transition: border-color .15s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--accent); }
.form-group input::placeholder { color: var(--fg-2); }

/* ===== Logs Panel ===== */
#logs-panel {
  position: fixed; top: var(--header-h); right: 0; bottom: 0;
  width: 480px; background: var(--bg); color: var(--fg);
  display: flex; flex-direction: column; z-index: 90;
  border-left: 1px solid var(--border); transition: transform 0.2s ease;
}
#logs-panel.hidden { transform: translateX(100%); pointer-events: none; }
.logs-header {
  padding: 10px 16px; background: var(--bg-2);
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--border); font-size: 13px; font-weight: 600;
  flex-shrink: 0;
}
.logs-actions { display: flex; gap: 8px; }
.logs-actions button {
  padding: 4px 10px; border: 1px solid var(--border); background: var(--bg-3);
  color: var(--fg); border-radius: 4px; cursor: pointer; font-size: 12px;
}
.logs-actions button:hover { background: var(--bg-4); }
#logs-content {
  flex: 1; overflow-y: auto; padding: 8px 12px;
  font-family: 'SF Mono', Menlo, monospace; font-size: 12px; line-height: 1.6;
}
.log-line { padding: 2px 0; word-break: break-all; }
.log-time { color: var(--fg-2); margin-right: 8px; }
.log-level-log { color: var(--fg); }
.log-level-warn { color: #ffcc00; }
.log-level-error { color: #ff6b6b; }

/* ===== Mobile Toggle ===== */
.mobile-toggle {
  display: none;
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--bg-3); color: var(--fg); border: 1px solid var(--border);
  font-size: 18px; cursor: pointer;
  align-items: center; justify-content: center;
  flex-shrink: 0;
}
.topbar-left {
  display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border); }

/* ===== Drag Active State ===== */
body.drag-active .input-box {
  outline: 2px dashed var(--accent);
  outline-offset: 2px;
}

/* ===== Sidebar Backdrop (mobile) ===== */
.sidebar-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 35;
  display: none; opacity: 0; transition: opacity .3s;
}
.sidebar-backdrop.open { display: block; opacity: 1; }

/* ===== Streaming Cursor ===== */
.streaming::after { content: '\258C'; animation: blink 1s step-end infinite; margin-left: 2px; }
@keyframes blink { 50% { opacity: 0; } }

/* ================================================================
   Responsive: Desktop Optimizations
   ================================================================ */

/* Large desktop: constrain chat content width for better readability */
@media (min-width: 1400px) {
  .chat-scroll {
    padding: 24px 48px;
  }
  .input-area {
    padding: 16px 48px 24px;
  }
  .phase-nav {
    padding: 10px 48px;
  }
  .msg { max-width: 65%; }
}

/* Extra large desktop: sidebar can be wider */
@media (min-width: 1600px) {
  :root {
    --sidebar-w: 300px;
  }
}

/* Ultra-wide: center chat content */
@media (min-width: 1920px) {
  .chat-scroll {
    padding: 28px 80px;
  }
  .input-area {
    padding: 18px 80px 28px;
  }
  .phase-nav {
    padding: 10px 80px;
  }
}

/* ================================================================
   Responsive: Tablet (narrow sidebar, smaller padding)
   ================================================================ */
@media (max-width: 1100px) and (min-width: 901px) {
  :root {
    --sidebar-w: 240px;
  }
  .chat-scroll { padding: 16px; }
  .input-area { padding: 12px 16px 16px; }
  .phase-nav { padding: 10px 16px; }
}

/* ================================================================
   Responsive: Mobile (sidebar hidden, hamburger menu)
   ================================================================ */
@media (max-width: 900px) {
  html, body {
    height: 100dvh;
    height: -webkit-fill-available;
    min-height: 100dvh;
  }
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 40;
    transform: translateX(-100%);
    width: 280px;
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-toggle { display: flex; }
  .breadcrumbs { flex: 1; min-width: 0; overflow: hidden; }
  #logs-panel { width: 100%; }
  .msg { max-width: 90%; }
  .modal { width: 95vw; }
  .input-area {
    padding: 10px 12px max(12px, env(safe-area-inset-bottom));
  }
  .input-box textarea {
    font-size: 16px;
    max-height: 80px;
  }
}

/* ===== Knowledge Base ===== */
.view-tabs {
  display: flex;
  gap: 4px;
  padding: 8px 16px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
}
.view-tab {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--fg-2);
  font-size: 13px;
  cursor: pointer;
  border-radius: 8px 8px 0 0;
  transition: all .15s;
}
.view-tab:hover { color: var(--fg); }
.view-tab.active {
  color: var(--accent);
  background: var(--bg-2);
  border-bottom: 2px solid var(--accent);
}

.kb-panel {
  flex: 1;
  overflow: hidden;
  padding: 16px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
}
.kb-panel.hidden { display: none; }

.kb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.kb-title {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}
.kb-domain {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 12px;
  background: var(--bg-3);
  color: var(--fg-2);
}
.kb-search {
  display: flex;
  gap: 8px;
}
.kb-search input {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-2);
  color: var(--fg);
  font-size: 13px;
  width: 240px;
}
.kb-search input:focus { outline: none; border-color: var(--accent); }
.kb-search button {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--fg);
  cursor: pointer;
  font-size: 13px;
}
.kb-search button:hover { background: var(--border); }

.kb-upload {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  text-align: center;
  transition: all .2s;
  cursor: pointer;
  flex-shrink: 0;
}
.kb-upload:hover, .kb-upload.dragover {
  border-color: var(--accent);
  background: rgba(212,163,115,0.05);
}
.kb-upload-inner p { margin: 4px 0; color: var(--fg-2); font-size: 14px; }
.kb-upload-link {
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
}
.kb-upload-hint {
  font-size: 12px !important;
  color: var(--fg-3) !important;
}

.kb-docs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}
.kb-doc-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-2);
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: all .15s;
}
.kb-doc-item:hover { border-color: var(--accent); }
.kb-doc-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.kb-doc-icon { font-size: 20px; }
.kb-doc-name { font-size: 14px; font-weight: 500; }
.kb-doc-meta {
  font-size: 11px;
  color: var(--fg-3);
  margin-top: 2px;
}
.kb-doc-actions {
  display: flex;
  gap: 8px;
}
.kb-doc-actions button {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--fg-2);
  font-size: 12px;
  cursor: pointer;
}
.kb-doc-actions button:hover { background: var(--border); color: var(--fg); }
.kb-doc-actions button.delete:hover { background: #7f1d1d; color: #fff; border-color: #7f1d1d; }

.kb-empty {
  text-align: center;
  padding: 40px;
  color: var(--fg-3);
  font-size: 14px;
}

.kb-results {
  position: absolute;
  top: 60px;
  left: 20px;
  right: 20px;
  bottom: 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  z-index: 10;
  display: flex;
  flex-direction: column;
}
.kb-results.hidden { display: none !important; }
.kb-results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
}
.kb-results-header button {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--fg-2);
  font-size: 12px;
  cursor: pointer;
}
.kb-result-item {
  padding: 12px;
  background: var(--bg-1);
  border-radius: 8px;
  margin-bottom: 8px;
  border-left: 3px solid var(--accent);
}
.kb-result-source {
  font-size: 11px;
  color: var(--accent);
  margin-bottom: 4px;
}
.kb-result-text {
  font-size: 13px;
  color: var(--fg);
  line-height: 1.5;
}
.kb-results-list {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

/* KB Extracts */
.kb-section-header {
  padding: 12px 16px 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-2);
  border-top: 1px solid var(--border);
  margin-top: 8px;
}
.kb-extracts {
  padding: 0 16px 16px;
  overflow-y: auto;
  max-height: 240px;
}
.kb-extract-group {
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-2);
  overflow: hidden;
}
.kb-extract-header {
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--bg-3);
  border-bottom: 1px solid var(--border);
}
.kb-extract-items {
  list-style: none;
  padding: 0;
  margin: 0;
}
.kb-extract-items li {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--fg);
  line-height: 1.5;
  border-bottom: 1px solid var(--border);
}
.kb-extract-items li:last-child {
  border-bottom: none;
}

/* KB Manual Entries */
.kb-manual-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.kb-add-btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
}
.kb-add-btn:hover {
  background: var(--accent);
  color: #fff;
}
.kb-manual-entries {
  padding: 0 16px 16px;
  overflow-y: auto;
  max-height: 280px;
}
.kb-manual-item {
  margin-bottom: 10px;
  padding: 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .15s;
}
.kb-manual-item:hover {
  border-color: var(--accent);
}
.kb-manual-content {
  font-size: 13px;
  color: var(--fg);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}
.kb-manual-meta {
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.kb-manual-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-3);
  color: var(--accent);
  border: 1px solid var(--border);
}
.kb-manual-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}
.kb-manual-actions button {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--fg-2);
  font-size: 12px;
  cursor: pointer;
}
.kb-manual-actions button:hover {
  background: var(--border);
  color: var(--fg);
}
.kb-manual-actions button.delete:hover {
  background: #7f1d1d;
  color: #fff;
  border-color: #7f1d1d;
}

/* KB Code Repos */
.kb-repo-scan {
  padding: 12px 16px 16px;
}
.kb-repo-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
}
.kb-repo-input-row input {
  flex: 1;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-2);
  color: var(--fg);
  font-size: 13px;
}
.kb-repo-input-row button {
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  cursor: pointer;
}
.kb-repo-input-row button:hover {
  opacity: 0.9;
}
.kb-repo-hint {
  font-size: 11px;
  color: var(--fg-3);
  margin: 0;
}
.kb-repos {
  padding: 0 16px 16px;
  overflow-y: auto;
  max-height: 240px;
}
.kb-repo-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-2);
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 8px;
  transition: all .15s;
}
.kb-repo-item:hover {
  border-color: var(--accent);
}
.kb-repo-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.kb-repo-icon {
  font-size: 20px;
}
.kb-repo-name {
  font-size: 14px;
  font-weight: 500;
}
.kb-repo-meta {
  font-size: 11px;
  color: var(--fg-3);
  margin-top: 2px;
}
.kb-repo-actions {
  display: flex;
  gap: 8px;
}
.kb-repo-actions button {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-3);
  color: var(--fg-2);
  font-size: 12px;
  cursor: pointer;
}
.kb-repo-actions button:hover {
  background: var(--border);
  color: var(--fg);
}
.kb-repo-actions button.delete:hover {
  background: #7f1d1d;
  color: #fff;
  border-color: #7f1d1d;
}

/* Toast */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: var(--bg-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
  max-width: 360px;
  word-break: break-word;
}
.toast-success { border-color: #4ade80; background: #1a2e1a; }
.toast-error { border-color: #ef4444; background: #2e1a1a; }
.toast-info { border-color: var(--accent-2); background: #1a2a2e; }

/* Small mobile */
@media (max-width: 480px) {
  .topbar { padding: 0 10px; gap: 8px; }
  .topbar-actions { gap: 4px; }
  .breadcrumbs { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .bc-project, .bc-task { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 120px; display: inline-block; vertical-align: middle; }
  .agent-pill { padding: 4px; font-size: 0; gap: 0; }
  .agent-pill .dot { width: 8px; height: 8px; }
  #agent-label { display: none; }
  .btn { padding: 4px 8px; font-size: 11px; }
  .btn-primary span { display: none; }
  .user-avatar { width: 28px; height: 28px; font-size: 11px; }
  .chat-scroll { padding: 12px; }
  .input-area { padding: 10px 12px 12px; }
  .phase-nav { padding: 8px 12px; }
  .phase-item { font-size: 11px; padding: 4px 8px; }
  .msg { max-width: 95%; }
  .msg-body { font-size: 13px; padding: 10px 12px; }
}