:root {
  --sidebar-w: 248px;
  --topbar-h: 64px;
  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05), 0 4px 12px rgba(0,0,0,.04);
}

[data-bs-theme='dark'] {
  --bs-body-bg: #0e1015;
  --bs-tertiary-bg: #161922;
  --bs-secondary-bg: #1c2030;
  --bs-border-color: #232838;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.25);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bs-body-bg);
  min-height: 100vh;
}

/* ---- Layout shell ----------------------------------------------------- */

.app-shell {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: var(--sidebar-w);
  background: var(--bs-tertiary-bg);
  border-right: 1px solid var(--bs-border-color);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
}

.sidebar-brand {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid var(--bs-border-color);
  font-weight: 600;
  font-size: 1.05rem;
}
.sidebar-brand i { font-size: 1.4rem; color: var(--bs-primary); }

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--bs-body-color);
  text-decoration: none;
  font-size: .92rem;
  transition: background .15s ease, color .15s ease;
}
.sidebar-nav a i { width: 20px; font-size: 1.05rem; opacity: .85; }
.sidebar-nav a:hover { background: var(--bs-secondary-bg); }
.sidebar-nav a.active {
  background: rgba(13, 110, 253, .12);
  color: var(--bs-primary);
}
.sidebar-nav a.active i { opacity: 1; }

.sidebar-foot {
  padding: 12px;
  border-top: 1px solid var(--bs-border-color);
}
.sidebar-foot a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--bs-secondary-color);
  text-decoration: none;
  font-size: .92rem;
}
.sidebar-foot a:hover { background: var(--bs-secondary-bg); color: var(--bs-body-color); }

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app-topbar {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 28px;
  background: var(--bs-tertiary-bg);
  border-bottom: 1px solid var(--bs-border-color);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-spacer { flex: 1; }
.btn-icon {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 0; color: var(--bs-body-color);
}
.btn-icon:hover { background: var(--bs-secondary-bg); }

.topbar-user {
  display: flex; align-items: center; gap: 10px;
  padding-left: 12px;
  border-left: 1px solid var(--bs-border-color);
}
.topbar-user-name { font-size: .9rem; }
.avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--bs-primary);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600;
}

.app-content {
  flex: 1;
  padding: 28px 32px;
  width: 100%;
  min-width: 0;
}

@media (max-width: 768px) {
  .app-sidebar {
    position: fixed;
    transform: translateX(-100%);
    transition: transform .25s ease;
    z-index: 50;
  }
  .app-sidebar.is-open { transform: translateX(0); }
  .app-content { padding: 16px; }
}

/* ---- Page header ------------------------------------------------------ */

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.page-header h1 { font-size: 1.6rem; margin: 0; font-weight: 600; }
.page-header p { color: var(--bs-secondary-color); margin: 4px 0 0; font-size: .92rem; }

/* ---- KPI cards -------------------------------------------------------- */

.kpi-card {
  background: var(--bs-tertiary-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}
.kpi-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.kpi-label { font-size: .8rem; color: var(--bs-secondary-color); text-transform: uppercase; letter-spacing: .04em; }
.kpi-value { font-size: 1.6rem; font-weight: 600; line-height: 1.1; }
.kpi-value-sm { font-size: 1rem; font-weight: 600; line-height: 1.25; }

/* ---- Cards / tables --------------------------------------------------- */

.card {
  background: var(--bs-tertiary-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-header {
  background: transparent;
  border-bottom: 1px solid var(--bs-border-color);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.card-header h2 { font-size: 1rem; font-weight: 600; margin: 0; }

.table > :not(caption) > * > * {
  padding: .85rem 1rem;
}
.table thead th {
  font-size: .76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--bs-secondary-color);
  border-bottom: 1px solid var(--bs-border-color);
  background: var(--bs-secondary-bg);
}

/* ---- Login ------------------------------------------------------------ */

.login-body {
  background: radial-gradient(circle at top, #1c2030, #0e1015 55%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-card {
  background: var(--bs-tertiary-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--radius);
  padding: 36px 32px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 25px 60px rgba(0,0,0,.45);
}
.login-brand { text-align: center; margin-bottom: 24px; }
.login-brand i { font-size: 2.4rem; color: var(--bs-primary); }
.login-brand h1 { font-size: 1.4rem; margin: 8px 0 4px; font-weight: 600; }
.login-brand p { color: var(--bs-secondary-color); font-size: .9rem; margin: 0; }

/* ---- Schedule DB picker ---------------------------------------------- */

.db-pick {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--bs-border-color);
  border-radius: 10px;
  cursor: pointer;
  background: var(--bs-secondary-bg);
  transition: border-color .15s ease, background .15s ease;
}
.db-pick:has(input:checked) {
  border-color: var(--bs-primary);
  background: rgba(13, 110, 253, .07);
}
.db-pick input { margin-top: 4px; }

/* ---- Misc tweaks ----------------------------------------------------- */

code { background: var(--bs-secondary-bg); padding: 2px 6px; border-radius: 6px; font-size: .82em; }
pre { background: var(--bs-secondary-bg); padding: 14px; border-radius: 10px; max-height: 320px; overflow: auto; }
.btn { border-radius: 10px; white-space: nowrap; }
.btn-icon { border-radius: 50%; }

/* Row-level action buttons share size + spacing */
.action-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}
.action-group .btn,
.action-group form > .btn {
  width: 34px;
  height: 34px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.action-group .btn i { font-size: 1rem; line-height: 1; }