/* ============================================================
   Panel layout — topbar + sidebar + main
   ============================================================ */

.panel-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--topbar-height) 1fr;
  grid-template-areas:
    "topbar topbar"
    "sidebar main";
}

@media (max-width: 768px) {
  .panel-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }
}

/* === TOPBAR === */
.topbar {
  grid-area: topbar;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-logo {
  display: flex;
  align-items: baseline;
  text-decoration: none;
  gap: 0;
}
.topbar-logo-prefix {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--text-3);
  margin-right: 4px;
  font-style: italic;
}
.topbar-logo-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.4px;
  color: var(--text);
}

.topbar-tenant {
  font-size: 12px;
  color: var(--text-3);
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
}

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

.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 6px 6px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
}

.user-avatar {
  width: 28px;
  height: 28px;
  background: var(--text);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 11px;
  font-weight: 500;
}

.user-name {
  font-size: 13px;
  color: var(--text);
}

@media (max-width: 600px) {
  .user-name, .topbar-tenant { display: none; }
}

/* === Theme toggle === */
.theme-toggle {
  background: var(--bg-2);
  border: 1px solid var(--border);
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: color var(--transition-base);
}
.theme-toggle:hover { color: var(--text); }
.theme-toggle svg { width: 14px; height: 14px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* === SIDEBAR === */
.sidebar {
  grid-area: sidebar;
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  padding: 22px 12px;
  overflow-y: auto;
  position: sticky;
  top: var(--topbar-height);
  height: calc(100vh - var(--topbar-height));
}

@media (max-width: 768px) {
  .sidebar { display: none; }
}

.sidebar-section { margin-bottom: 24px; }

.sidebar-title {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 8px;
  padding: 0 12px;
}

.sidebar-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}
.sidebar-link:hover {
  background: var(--bg-3);
  color: var(--text);
}
.sidebar-link.active {
  background: var(--bg-3);
  color: var(--text);
  border-left-color: var(--accent);
  font-family: var(--font-serif);
  font-weight: 500;
}

.sidebar-link-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
}
.sidebar-link-meta.attention { color: var(--rose); font-weight: 500; }

/* === MAIN === */
.main {
  grid-area: main;
  padding: 32px 36px;
  overflow-x: auto;
}

@media (max-width: 768px) {
  .main { padding: 22px; }
}

.main-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.main-header h1 { margin: 0 0 4px; }
.main-header-meta {
  font-size: 13px;
  color: var(--text-3);
}

/* === AUTH PAGES (login, register) === */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 22px;
  background: var(--bg);
}

.auth-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 40px 36px;
  max-width: 420px;
  width: 100%;
}

.auth-logo {
  display: flex;
  align-items: baseline;
  margin-bottom: 28px;
  text-decoration: none;
}
.auth-logo-prefix {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--text-3);
  margin-right: 5px;
  font-style: italic;
}
.auth-logo-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.4px;
}

.auth-eyebrow {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 12px;
}

.auth-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.6px;
}

.auth-subtitle {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 28px;
  line-height: 1.6;
}

.auth-divider {
  text-align: center;
  margin: 22px 0 16px;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.auth-meta {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-3);
  text-align: center;
  line-height: 1.6;
}
.auth-meta a { color: var(--text-2); }
.auth-meta a:hover { color: var(--text); }

/* === KPI cards === */
.kpis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border-2);
  margin-bottom: 32px;
}

.kpi {
  background: var(--bg-2);
  padding: 18px 22px;
}

.kpi-label {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.kpi-value {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  line-height: 1;
  color: var(--text);
  margin-bottom: 6px;
}
.kpi-value.attention { color: var(--rose); }
.kpi-value.warn { color: var(--warm); }
.kpi-value.ok { color: var(--accent); }

.kpi-meta {
  font-size: 11px;
  color: var(--text-3);
}

/* === Empty state === */
.empty-state {
  background: var(--bg-2);
  border: 1px dashed var(--border-2);
  padding: 48px 32px;
  text-align: center;
  margin-top: 24px;
}

.empty-state-title {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--text);
  margin-bottom: 8px;
}

.empty-state-desc {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 20px;
  line-height: 1.6;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

/* === Tables === */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-2);
  border: 1px solid var(--border);
  font-size: 13px;
}

.data-table th {
  background: var(--bg-3);
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover { background: var(--bg-3); }
.data-table .vendor { color: var(--text); font-weight: 500; }
.data-table .amount {
  text-align: right;
  font-family: var(--font-serif);
  color: var(--text);
  font-weight: 500;
}