/* Component styles. Colors and sizes come from theme.css variables only.
   Inline style attributes are forbidden in markup and in JS-generated DOM
   (see SPEC.md); data-driven theming goes through classes (.channel-*). */

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

body {
  font-family: var(--font-body);
  background: var(--bg-main);
  color: var(--text-dark);
  font-size: 14px;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  color: var(--text-light);
  overflow-y: auto;
  z-index: 100;
}
.sidebar-logo { padding: 28px 24px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.sidebar-logo h1 { font-size: 16px; font-weight: 700; letter-spacing: 0.5px; color: #ffffff; }
.sidebar-logo p { font-size: 11px; color: var(--text-muted); margin-top: 4px; letter-spacing: 2px; text-transform: uppercase; }
.sidebar-section-label { font-size: 10px; text-transform: uppercase; letter-spacing: 2px; color: var(--text-muted); padding: 24px 24px 8px; }
.sidebar-nav { padding: 0 12px; }
.nav-item {
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-light);
  font-size: 13px;
}
.nav-item:hover { background: rgba(255, 255, 255, 0.06); color: #ffffff; }
.nav-item.active { background: rgba(255, 255, 255, 0.12); color: #ffffff; font-weight: 500; }

/* ===== Main / topbar ===== */
.main { margin-left: var(--sidebar-width); min-height: 100vh; }
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 32px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
}
.notice { color: var(--danger); font-size: 13px; min-height: 18px; }
.who { color: var(--text-muted); font-size: 13px; }
.content { padding: 28px 32px; }

/* Router contract: exactly one .page carries .active */
.page { display: none; }
.page.active { display: block; }
.page h2 { font-size: 20px; margin-bottom: 16px; }
.page-desc { color: var(--text-muted); margin: -8px 0 16px; }

/* ===== Card / table ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
}
.data-table th { color: var(--text-muted); font-weight: 500; font-size: 12px; }
.data-table tr:last-child td { border-bottom: none; }
.cell-actions { text-align: right; white-space: nowrap; }
.cell-empty { color: var(--text-muted); }

.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 11px;
}

/* ===== Buttons / form ===== */
.btn {
  display: inline-block;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-dark);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
}
.btn:hover { border-color: var(--text-muted); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-primary { background: var(--accent-primary); border-color: var(--accent-primary); color: #ffffff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #ffffff; }
.btn-small { padding: 4px 10px; font-size: 12px; }

.form-card h3 { font-size: 14px; margin-bottom: 12px; }
.form-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.form-row label { width: 110px; color: var(--text-muted); font-size: 13px; }
.form-row input,
.form-row textarea {
  flex: 1;
  max-width: 360px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}
.form-actions { display: flex; align-items: center; gap: 10px; margin-top: 14px; }
.form-msg { font-size: 12px; min-height: 16px; }
.form-msg.ok { color: var(--success); }
.form-msg.error { color: var(--danger); }

/* ===== Modal ===== */
.overlay {
  position: fixed; inset: 0;
  background: rgba(15, 17, 23, 0.5);
  display: none;
  align-items: center; justify-content: center;
  z-index: 200;
}
.overlay.open { display: flex; }
.modal {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  width: min(420px, calc(100vw - 48px));
  box-shadow: var(--card-hover-shadow);
}
.modal h3 { font-size: 15px; margin-bottom: 10px; }
.modal p { color: var(--text-muted); font-size: 13px; margin-bottom: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%; bottom: 28px;
  transform: translate(-50%, 16px);
  background: var(--accent-primary);
  color: #ffffff;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 300;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: var(--danger); }

/* ===== Tabs (App.parts.tabs) ===== */
.sc-tabs { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.sc-tab {
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-dark);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}
.sc-tab.active { background: var(--accent-primary); border-color: var(--accent-primary); color: #ffffff; }

/* Mobile chrome (hamburger/drawer) is out of scope for the skeleton. */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
}