:root {
  --app-bg: #f4f6fb;
  --app-surface: #ffffff;
  --app-border: #e6e9f2;
  --app-text: #1f2733;
  --app-muted: #6b7589;
  --app-primary: #3457d5;
  --app-primary-dark: #2742a8;
  --app-primary-soft: #eef2ff;
  --app-radius: 0.75rem;
  --app-shadow: 0 1px 2px rgba(20, 30, 60, .04), 0 8px 24px rgba(20, 30, 60, .06);
  --app-shadow-sm: 0 1px 2px rgba(20, 30, 60, .06);
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 15.5px;
  }
}

body {
  margin-bottom: 64px;
  background-color: var(--app-bg);
  color: var(--app-text);
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-check-input:focus, .form-select:focus {
  box-shadow: 0 0 0 0.2rem rgba(52, 87, 213, .25);
}

/* ===== Navbar ===== */
.app-navbar {
  background: linear-gradient(100deg, #2742a8 0%, #3457d5 55%, #4068e6 100%);
  box-shadow: 0 2px 14px rgba(20, 30, 60, .12);
  padding-top: .55rem;
  padding-bottom: .55rem;
}

.app-navbar .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: #fff;
}

.app-navbar .brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: .55rem;
  background: rgba(255, 255, 255, .18);
  font-weight: 800;
  font-size: .82rem;
  letter-spacing: .04em;
}

.app-navbar .brand-text {
  font-size: 1.02rem;
}

.app-navbar .navbar-nav .nav-link {
  color: rgba(255, 255, 255, .85);
  white-space: nowrap;
  border-radius: .55rem;
  padding: .4rem .7rem;
  font-weight: 500;
  transition: background-color .15s ease, color .15s ease;
}

.app-navbar .navbar-nav .nav-link:hover,
.app-navbar .navbar-nav .nav-link:focus {
  color: #fff;
  background: rgba(255, 255, 255, .12);
}

.app-navbar .navbar-nav .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, .22);
  font-weight: 600;
}

.app-navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, .35);
}

/* user menu (right) */
.app-navbar .user-menu {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}

.app-navbar .user-menu::after {
  margin-left: .15rem;
  vertical-align: .15em;
}

.app-navbar .user-avatar {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, .9);
  color: var(--app-primary-dark);
  font-weight: 700;
  font-size: .9rem;
  text-transform: uppercase;
}

.app-navbar .user-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.app-navbar .user-name {
  font-weight: 600;
  font-size: .9rem;
  color: #fff;
}

.app-navbar .user-role {
  font-size: .72rem;
  color: rgba(255, 255, 255, .75);
}

.dropdown-menu {
  border: 1px solid var(--app-border);
  border-radius: .65rem;
  box-shadow: var(--app-shadow);
  padding: .35rem;
}

.dropdown-item {
  border-radius: .45rem;
  padding: .45rem .7rem;
  font-size: .92rem;
}

.dropdown-item:active {
  background-color: var(--app-primary);
}

/* ===== Cards ===== */
.card {
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  background: var(--app-surface);
  box-shadow: var(--app-shadow-sm);
  transition: box-shadow .18s ease, transform .18s ease;
}

.card:hover {
  box-shadow: var(--app-shadow);
}

.card-header {
  background: transparent;
  border-bottom: 1px solid var(--app-border);
  font-weight: 600;
  padding: .85rem 1.1rem;
}

.card-body {
  padding: 1.1rem;
}

/* stat cards (dashboard) */
.row.g-3 > [class*="col-"] > .card.text-center .card-body {
  padding: 1.15rem .75rem;
}

.row.g-3 > [class*="col-"] > .card.text-center .text-muted.small {
  font-size: .8rem;
  letter-spacing: .01em;
}

.row.g-3 > [class*="col-"] > .card.text-center .fs-3,
.row.g-3 > [class*="col-"] > .card.text-center .fs-4 {
  margin-top: .25rem;
  letter-spacing: .01em;
}

/* ===== Headings ===== */
main > h1 {
  font-weight: 700;
  letter-spacing: .01em;
  margin-bottom: 1.1rem;
  color: #16203a;
}

/* ===== Tables ===== */
.table {
  --bs-table-bg: transparent;
  color: var(--app-text);
}

.card .table {
  margin-bottom: 0;
}

.table > thead th {
  font-size: .82rem;
  font-weight: 600;
  color: var(--app-muted);
  text-transform: none;
  border-bottom-width: 1px;
  background: var(--app-primary-soft);
}

.table-hover > tbody > tr:hover > * {
  background-color: rgba(52, 87, 213, .04);
}

.progress {
  background-color: #eef1f8;
  border-radius: .5rem;
}

.progress-bar {
  background-color: var(--app-primary);
  border-radius: .5rem;
  font-weight: 600;
}

/* ===== Buttons ===== */
.btn {
  border-radius: .55rem;
  font-weight: 500;
}

.btn-primary {
  --bs-btn-bg: var(--app-primary);
  --bs-btn-border-color: var(--app-primary);
  --bs-btn-hover-bg: var(--app-primary-dark);
  --bs-btn-hover-border-color: var(--app-primary-dark);
  --bs-btn-active-bg: var(--app-primary-dark);
}

.btn-outline-primary {
  --bs-btn-color: var(--app-primary);
  --bs-btn-border-color: var(--app-primary);
  --bs-btn-hover-bg: var(--app-primary);
  --bs-btn-hover-border-color: var(--app-primary);
}

/* ===== Forms ===== */
.form-control, .form-select {
  border-radius: .55rem;
  border-color: #d9deec;
}

.form-label {
  font-weight: 500;
  font-size: .9rem;
  color: #3a4253;
  margin-bottom: .3rem;
}

/* ===== Alerts ===== */
.alert {
  border: 1px solid transparent;
  border-radius: var(--app-radius);
}

/* ===== Footer ===== */
.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 48px;
  line-height: 48px;
  background: var(--app-surface);
  border-top: 1px solid var(--app-border) !important;
}

.footer .container {
  height: 100%;
  align-items: center;
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
  text-align: start;
}