/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue: #2563eb;
  --blue-hover: #1d4ed8;
  --green: #16a34a;
  --red: #dc2626;
  --red-hover: #b91c1c;
  --amber: #f59e0b;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --text: #0f172a;
  --text2: #64748b;
  --text3: #94a3b8;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 4px 16px rgba(0,0,0,.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 880px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

/* ─── Header ──────────────────────────────────────────────── */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  max-width: 880px; margin: 0 auto; padding: 0 20px;
  height: 56px; display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 20px; font-weight: 700; letter-spacing: -.02em; }
.header-right { display: flex; align-items: center; gap: 12px; }

.conn-badge {
  font-size: 12px; padding: 3px 10px; border-radius: 20px; font-weight: 500;
}
.conn-badge.online { background: #dcfce7; color: var(--green); }
.conn-badge.offline { background: #fee2e2; color: var(--red); }

.icon-btn {
  background: none; border: none; font-size: 18px; cursor: pointer;
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.icon-btn:hover { background: var(--bg); }

/* ─── Manual Install ──────────────────────────────────────── */
.manual-install {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}
.manual-install h2 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.manual-install .hint { color: var(--text2); font-size: 13px; margin-bottom: 14px; }

.install-form { display: flex; gap: 10px; }
.install-form input {
  flex: 1; min-width: 0;
  padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; outline: none; transition: border-color .15s;
}
.install-form input:focus { border-color: var(--blue); }

/* ─── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; cursor: pointer;
  transition: background .15s, transform .1s;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-hover); }
.btn-primary:disabled { background: var(--text3); cursor: not-allowed; }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: var(--red-hover); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-ghost {
  background: transparent; color: var(--text2); border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg); }
.btn-installed {
  background: #dcfce7; color: var(--green); cursor: default;
}

/* ─── Tabs ────────────────────────────────────────────────── */
.tabs {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.tabs-inner {
  display: flex; gap: 0;
}
.tab {
  background: none; border: none; border-bottom: 2px solid transparent;
  padding: 12px 20px; font-size: 14px; font-weight: 500;
  color: var(--text2); cursor: pointer; transition: all .15s;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--blue); border-bottom-color: var(--blue); }

/* ─── Content / Cards ─────────────────────────────────────── */
.content { padding: 24px 0 60px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex; flex-direction: column; gap: 12px;
  transition: box-shadow .2s, transform .2s;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.card-head { display: flex; align-items: center; gap: 12px; }
.card-icon { font-size: 32px; line-height: 1; }
.card-title { font-size: 15px; font-weight: 600; }
.card-desc { color: var(--text2); font-size: 13px; line-height: 1.5; flex: 1; }
.card-meta {
  font-size: 11px; color: var(--text3); word-break: break-all;
  background: var(--bg); padding: 8px 10px; border-radius: 6px;
  font-family: 'SF Mono', 'Menlo', monospace;
}
.card-foot { display: flex; justify-content: flex-end; gap: 8px; }

/* Installed list variant */
.installed-card {
  flex-direction: row; align-items: center; gap: 16px;
  padding: 16px 20px;
}
.installed-card .card-icon { font-size: 28px; }
.installed-card .card-info { flex: 1; min-width: 0; }
.installed-card .card-title { font-size: 14px; }
.installed-card .card-desc { font-size: 12px; margin-top: 2px; }
.installed-card .card-actions { display: flex; gap: 8px; flex-shrink: 0; }

.status-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 4px;
}
.status-dot.enabled { background: var(--green); }
.status-dot.disabled { background: var(--text3); }

/* ─── Empty State ─────────────────────────────────────────── */
.empty {
  text-align: center; padding: 60px 20px; color: var(--text2);
}
.empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-text { font-size: 15px; }
.empty-sub { font-size: 13px; color: var(--text3); margin-top: 4px; }

/* ─── Loading ─────────────────────────────────────────────── */
.spinner {
  text-align: center; padding: 40px;
  color: var(--text3); font-size: 14px;
}
@keyframes pulse { 0%,100% { opacity: .4; } 50% { opacity: 1; } }
.spinner::before { content: '⏳'; font-size: 24px; display: block; margin-bottom: 8px; animation: pulse 1.2s infinite; }

/* ─── Modal ───────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.4); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal {
  background: var(--surface); border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
  width: 100%; max-width: 460px;
  animation: slideUp .2s ease-out;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 0;
}
.modal-header h2 { font-size: 18px; font-weight: 600; }
.modal-body { padding: 20px 24px 24px; }

.field { display: block; margin-bottom: 16px; }
.field-label {
  display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px;
}
.field-label .required { color: var(--red); }
.field-label .optional { color: var(--text3); font-weight: 400; }
.field input {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; outline: none; transition: border-color .15s;
}
.field input:focus { border-color: var(--blue); }
.field-hint { display: block; font-size: 12px; color: var(--text3); margin-top: 4px; }

.modal-actions { display: flex; justify-content: flex-end; padding-top: 4px; }

/* ─── Toast ───────────────────────────────────────────────── */
.toasts {
  position: fixed; bottom: 24px; right: 24px; z-index: 200;
  display: flex; flex-direction: column-reverse; gap: 8px;
}
.toast {
  padding: 12px 20px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; color: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
  animation: toastIn .25s ease-out;
  max-width: 360px;
}
.toast.success { background: var(--green); }
.toast.error { background: var(--red); }
.toast.info { background: var(--blue); }
@keyframes toastIn { from { opacity: 0; transform: translateY(10px) scale(.95); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(-10px) scale(.95); } }
.toast.removing { animation: toastOut .2s ease-in forwards; }

/* ─── Confirm Dialog ──────────────────────────────────────── */
.confirm-body { padding: 24px; text-align: center; }
.confirm-body p { font-size: 15px; margin-bottom: 20px; color: var(--text); }
.confirm-body .btn-group { display: flex; gap: 10px; justify-content: center; }

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 600px) {
  .install-form { flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  .installed-card { flex-direction: column; align-items: flex-start; }
  .installed-card .card-actions { align-self: flex-end; }
}