:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff6ff;
  --accent-soft-border: #bfdbfe;
  --ok: #16a34a;
  --ok-soft: #f0fdf4;
  --ok-border: #bbf7d0;
  --warn: #d97706;
  --warn-soft: #fffbeb;
  --warn-border: #fde68a;
  --err: #dc2626;
  --err-soft: #fef2f2;
  --err-border: #fecaca;
  --radius: 8px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.04);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.08);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { -webkit-font-smoothing: antialiased; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.55 var(--font-sans);
}

/* Header */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.2px;
}

.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: contain;
  flex-shrink: 0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
  padding: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.nav-btn {
  min-height: 32px;
  padding: 6px 16px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.7);
}

.nav-btn.active {
  color: var(--accent);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.health {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-tertiary);
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}

.chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}

.chip.on {
  color: var(--ok);
  border-color: var(--ok-border);
  background: var(--ok-soft);
}

.chip.on::before { opacity: 1; }

.chip.off {
  color: var(--err);
  border-color: var(--err-border);
  background: var(--err-soft);
}

/* Main */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

/* Auth */
.auth-panel {
  max-width: 420px;
  margin: 80px auto 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.auth-panel h1 {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 700;
  text-align: center;
}

.auth-panel .subtitle {
  margin: 0 0 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.auth-panel .form-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.auth-panel button[type="submit"] {
  width: 100%;
  justify-content: center;
  font-weight: 600;
}

/* Workspace */
.workspace {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  background: linear-gradient(to bottom, #ffffff, #f8fafc);
  border-bottom: 1px solid var(--border);
}

.panel-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-body {
  padding: 20px;
}

.panel-body.compact {
  padding: 16px 20px;
}

.hint {
  color: var(--text-tertiary);
  font-size: 12px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.panel-head .hint {
  margin: 0;
}

/* Form */
.form-sections {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-section {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.form-section-title {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.form-section-title span {
  display: inline-block;
  position: relative;
  padding-bottom: 5px;
}

.form-section-title span::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, #60a5fa 100%);
}

.grid-form > label,
.form-section > label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

label .label-extra {
  font-weight: 400;
  color: var(--text-tertiary);
}

input,
select,
textarea {
  width: 100%;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--border-strong);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

textarea {
  resize: vertical;
  min-height: 96px;
  line-height: 1.6;
}

.full-width {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  gap: 10px;
  padding-top: 4px;
}

/* Buttons */
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

button:hover:not(:disabled) {
  border-color: var(--border-strong);
  color: var(--text);
  background: #f8fafc;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

button.primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

button.ghost {
  border-color: transparent;
  background: transparent;
  color: var(--text-tertiary);
}

button.ghost:hover:not(:disabled) {
  background: #f1f5f9;
  color: var(--text-secondary);
}

button.danger {
  color: var(--err);
  border-color: var(--err-border);
  background: var(--err-soft);
}

button.danger:hover:not(:disabled) {
  background: var(--err);
  border-color: var(--err);
  color: #fff;
}

button.sm {
  min-height: 30px;
  padding: 5px 10px;
  font-size: 12px;
}

/* Skill checkboxes */
.skills-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-section-title {
  display: block;
  font-weight: 700;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
}

.skill-checkbox {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface);
  transition: all 0.15s ease;
}

.skill-checkbox:hover {
  border-color: var(--accent-soft-border);
  background: var(--accent-soft);
  color: var(--text);
}

.skill-checkbox:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-hover);
  box-shadow: 0 0 0 1px var(--accent);
}

.skill-checkbox input {
  cursor: pointer;
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  margin: 0;
  accent-color: var(--accent);
}

.skill-checkbox input:disabled {
  opacity: 0.5;
}

.skill-checkbox span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Agent cards */
.agent-list {
  display: grid;
  gap: 12px;
}

.agent-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.agent-card:hover {
  border-color: var(--accent-soft-border);
  box-shadow: var(--shadow);
}

.agent-info {
  min-width: 0;
}

.agent-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.agent-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.agent-meta a {
  color: var(--accent);
  text-decoration: none;
}

.agent-meta a:hover {
  text-decoration: underline;
}

.agent-skills {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.skill-tag {
  display: inline-block;
  padding: 1px 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.agent-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.status.deploying {
  color: var(--warn);
  background: var(--warn-soft);
  border: 1px solid var(--warn-border);
}

.status.running,
.status.done {
  color: var(--ok);
  background: var(--ok-soft);
  border: 1px solid var(--ok-border);
}

.status.stopped,
.status.idle {
  color: var(--text-tertiary);
  background: #f1f5f9;
  border: 1px solid var(--border);
}

.status.error,
.status.missing {
  color: var(--err);
  background: var(--err-soft);
  border: 1px solid var(--err-border);
}

.status.deploying::before { animation: pulse 1.5s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* Skills admin */
.skills-admin-list {
  display: grid;
  gap: 10px;
}

.skills-admin-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.15s ease;
}

.skills-admin-item:hover {
  border-color: var(--border-strong);
}

.skills-admin-item .name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
}

.skills-admin-item .desc {
  color: var(--text-tertiary);
  font-size: 12px;
  margin-top: 2px;
  line-height: 1.45;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  cursor: pointer;
}

.toggle input {
  appearance: none;
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: var(--border-strong);
  border: none;
  position: relative;
  cursor: pointer;
  transition: background 0.15s ease;
}

.toggle input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease;
}

.toggle input:checked {
  background: var(--accent);
}

.toggle input:checked::after {
  transform: translateX(16px);
}

.toggle input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Empty state */
.empty {
  margin: 24px 0;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(0);
  max-width: 640px;
  padding: 10px 16px;
  border-radius: var(--radius);
  background: #1f2937;
  color: #fff;
  font-size: 13px;
  box-shadow: var(--shadow-md);
  z-index: 200;
  opacity: 1;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast[hidden] {
  display: block !important;
  opacity: 0;
  transform: translateX(-50%) translateY(8px);
  pointer-events: none;
}

.toast.err {
  background: var(--err);
}

/* Responsive */
@media (max-width: 960px) {
  .form-section {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .agent-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .agent-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .topbar {
    flex-wrap: wrap;
    padding: 10px 14px;
  }
  .top-nav {
    order: 3;
    width: 100%;
    margin: 6px 0 0;
    justify-content: center;
  }
  .brand { font-size: 15px; }
  main { padding: 14px; }
  .form-section {
    grid-template-columns: 1fr;
  }
  .panel-head {
    padding: 14px 16px;
  }
  .panel-body,
  .panel-body.compact {
    padding: 16px;
  }
  .auth-panel {
    margin: 32px auto 0;
    padding: 24px 20px;
  }
  .agent-card {
    padding: 14px 16px;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .agent-actions button {
    flex: 1 1 auto;
  }
}