main > .container {
    padding: 86px 15px 20px;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

:root {
    --app-font-body: system-ui, sans-serif;
    --app-font-heading: system-ui, sans-serif;
}

body { font-family: var(--app-font-body); }
.app-shell { padding-top: 76px; }
h1, h2, h3, h4, h5, h6, .navbar-brand { font-family: var(--app-font-heading); }

.pod-photo {
    display: block;
    width: 240px;
    height: 180px;
    max-width: 100%;
    object-fit: cover;
    object-position: center;
    border-radius: .5rem;
    background: var(--bs-secondary-bg);
}

.not-set {
    color: var(--bs-danger);
    font-style: italic;
}

/* add sorting icons to gridview sort links */
a.asc:after, a.desc:after {
    content: '';
    left: 3px;
    display: inline-block;
    width: 0;
    height: 0;
    border: solid 5px transparent;
    margin: 4px 4px 2px 4px;
    background: transparent;
}

a.asc:after {
    border-bottom: solid 7px var(--bs-body-color);
    border-top-width: 0;
}

a.desc:after {
    border-top: solid 7px var(--bs-body-color);
    border-bottom-width: 0;
}

.grid-view th {
    white-space: nowrap;
}

.hint-block {
    display: block;
    margin-top: 5px;
    color: var(--bs-secondary-color);
}

.error-summary {
    color: var(--bs-danger-text-emphasis);
    background: var(--bs-danger-bg-subtle);
    border-left: 3px solid var(--bs-danger-border-subtle);
    padding: 10px 20px;
    margin: 0 0 15px 0;
}

.navbar-brand {
    display: inline-flex;
    align-items: center;
    line-height: 1;
}

.navbar-brand .brand-logo {
    width: auto;
    max-width: min(220px, 52vw);
}

.brand-logo-dark {
    display: none;
}

[data-bs-theme="dark"] .brand-logo-light {
    display: none;
}

[data-bs-theme="dark"] .brand-logo-dark {
    display: inline-block;
}

.app-brand-mark {
    color: var(--bs-primary);
    font-weight: 700;
    letter-spacing: -.02em;
}

/* Backend navigation */
.app-navbar {
    box-shadow: 0 2px 16px rgba(0, 0, 0, .18);
    --bs-navbar-padding-y: .65rem;
}

.app-navbar > .container {
    align-items: center;
}

.app-navbar .navbar-brand {
    font-weight: 700;
    letter-spacing: .01em;
    white-space: nowrap;
}

.app-navbar .navbar-toggler {
    border-color: var(--bs-border-color);
    padding: .4rem .6rem;
}

.app-nav {
    gap: .2rem;
}

.app-nav .nav-link {
    border-radius: .5rem;
    color: var(--bs-navbar-color);
    font-size: .94rem;
    padding: .55rem .75rem;
    transition: background-color .15s ease, color .15s ease;
}

.app-nav .nav-link:hover,
.app-nav .nav-link:focus {
    background: var(--bs-tertiary-bg);
    color: var(--bs-emphasis-color);
}

.app-nav .nav-link.active,
.app-nav .show > .nav-link {
    background: rgba(var(--bs-primary-rgb), .8);
    color: var(--bs-white);
    font-weight: 600;
}

.app-nav .dropdown-menu {
    min-width: 13rem;
    margin-top: .45rem;
    padding: .4rem;
    border: 0;
    border-radius: .65rem;
    box-shadow: 0 .5rem 1.5rem rgba(0, 0, 0, .18);
}

.app-nav .dropdown-item {
    border-radius: .4rem;
    padding: .55rem .7rem;
}

.app-nav .dropdown-item:hover,
.app-nav .dropdown-item:focus,
.app-nav .dropdown-item.active {
    background: var(--bs-primary-bg-subtle);
    color: var(--bs-primary-text-emphasis);
}

.app-nav .dropdown-menu .dropdown-menu {
    margin-top: -.4rem;
    margin-left: .25rem;
}

.app-navbar #theme-toggle {
    border-radius: .5rem;
    color: var(--bs-navbar-color);
    text-decoration: none;
}

.app-navbar #theme-toggle:hover,
.app-navbar #theme-toggle:focus {
    background: var(--bs-tertiary-bg);
    color: var(--bs-emphasis-color);
}

.app-nav .nav-link.logout {
    color: var(--bs-navbar-color);
}

@media (max-width: 767.98px) {
    .app-navbar .navbar-collapse {
        max-height: calc(100vh - 4.5rem);
        overflow-y: auto;
        padding: .65rem 0 .25rem;
    }

    .app-nav {
        gap: .1rem;
    }

    .app-nav .nav-link {
        padding: .7rem .8rem;
    }

    .app-nav .dropdown-menu {
        margin: .15rem 0 .35rem;
        padding: .25rem .4rem;
        background: var(--bs-tertiary-bg);
        box-shadow: none;
    }

    .app-nav .dropdown-item {
        color: var(--bs-navbar-color);
    }

    .app-nav .dropdown-menu .dropdown-menu {
        margin-left: .75rem;
    }

    .app-nav .nav-link.logout {
        display: block;
        width: 100%;
        text-align: left;
    }
}



/* footer logo: light logo by default (light bg-body-tertiary), dark logo for dark theme */
.footer-logo-dark { display: none; }

[data-bs-theme="dark"] .footer-logo-light { display: none; }
[data-bs-theme="dark"] .footer-logo-dark  { display: inline-block; }

/* login inputs: seamless icon inside input (Volt style) */
.login-split-card .input-group {
    border: var(--bs-border-width) solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    overflow: hidden;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}

.login-split-card .input-group .input-group-text {
    background: transparent;
    border: 0;
    padding-left: 1rem;
    padding-right: .75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-split-card .input-group .form-control {
    border: 0;
    background: transparent;
}

.login-split-card .input-group .form-control:focus {
    box-shadow: none;
}

.login-split-card .input-group:focus-within {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 .25rem rgba(var(--bs-primary-rgb), .25);
}

/* validation styles for browsers that support :has() */
@supports selector(.input-group:has(.is-invalid)) {
    /* show validation errors below the input-group */
    .login-split-card .input-group:has(.is-invalid) ~ .invalid-feedback {
        display: block;
        margin-top: .35rem;
        margin-bottom: .5rem;
    }

    /* red border on input-group when invalid */
    .login-split-card .input-group:has(.is-invalid) {
        border-color: var(--bs-danger);
    }

    .login-split-card .input-group:has(.is-invalid):focus-within {
        box-shadow: 0 0 0 .25rem rgba(var(--bs-danger-rgb), .25);
    }
}

/* fallback validation styles for browsers without :has() support */
@supports not selector(.input-group:has(.is-invalid)) {
    .login-split-card .invalid-feedback:not(:empty) {
        display: block;
        margin-top: .35rem;
        margin-bottom: .5rem;
    }

    .login-split-card .input-group .form-control.is-invalid {
        border: var(--bs-border-width) solid var(--bs-danger);
    }

    .login-split-card .input-group .form-control.is-invalid:focus {
        box-shadow: 0 0 0 .25rem rgba(var(--bs-danger-rgb), .25);
    }
}

/* login split card */
.login-split-card {
    border-radius: 1rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, .10);
    background-color: var(--bs-gray-100);
    width: 100%;
    max-width: 900px;
}

.login-brand-title {
    font-size: 1.75rem;
    line-height: 1.3;
}

.login-brand-text {
    font-size: .9rem;
}

.login-brand-panel {
    background: linear-gradient(135deg, #40B3D8 0%, #3a9cbd 40%, #83C933 100%);
    position: relative;
    min-height: 480px;
}

.login-brand-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(241, 138, 42, .25) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(131, 201, 51, .2) 0%, transparent 40%);
    pointer-events: none;
}

.login-btn {
    background: linear-gradient(135deg, #40B3D8, #3a9cbd);
    border: none;
    font-weight: 600;
    letter-spacing: .02em;
    transition: opacity .2s, transform .1s;
}

.login-btn:hover {
    opacity: .9;
    transform: translateY(-1px);
}

.login-btn:active {
    transform: translateY(0);
}

/* dark mode login card */
[data-bs-theme="dark"] .login-split-card {
    background-color: var(--bs-body-bg);
    box-shadow: 0 0 0 1px var(--bs-border-color), 0 4px 24px rgba(0, 0, 0, .4);
}

[data-bs-theme="dark"] .login-mobile-logo {
    filter: invert(1);
}

/* dashboard welcome banner */
.dashboard-banner {
    background: linear-gradient(135deg, #83C933 0%, #3a9cbd 40%, #40B3D8 100%);
    position: relative;
}

.dashboard-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        radial-gradient(circle at 80% 80%, rgba(241, 138, 42, .25) 0%, transparent 50%),
        radial-gradient(circle at 20% 20%, rgba(131, 201, 51, .2) 0%, transparent 40%);
    pointer-events: none;
}

/* centered page layout: error */
.site-index,
.site-error {
    flex: 1;
}

.site-error .site-error-content {
    width: 100%;
    max-width: 90%;
}

@media (min-width: 576px) {
    .site-error .site-error-content {
        max-width: 80%;
    }
}

@media (min-width: 768px) {
    .site-error .site-error-content {
        max-width: 60%;
    }
}

@media (min-width: 992px) {
    .site-error .site-error-content {
        max-width: 50%;
    }
}

/* Keep Bootstrap components and generated module views aligned with the active theme. */
html { color-scheme: light; }
[data-bs-theme="dark"] { color-scheme: dark; }

.navbar {
    --bs-navbar-color: var(--bs-body-color);
    --bs-navbar-hover-color: var(--bs-emphasis-color);
    --bs-navbar-disabled-color: var(--bs-secondary-color);
    --bs-navbar-brand-color: var(--bs-emphasis-color);
    --bs-navbar-brand-hover-color: var(--bs-emphasis-color);
    background-color: var(--bs-body-bg) !important;
    border-bottom: var(--bs-border-width) solid var(--bs-border-color);
}
.navbar .navbar-toggler { border-color: var(--bs-border-color); }
[data-bs-theme="dark"] .navbar .navbar-toggler-icon { filter: invert(1) grayscale(1); }

.dropdown-menu, .card, .modal-content, .offcanvas, .popover, .list-group-item {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
    border-color: var(--bs-border-color);
}
.dropdown-item { color: var(--bs-body-color); }
.dropdown-item:hover, .dropdown-item:focus {
    color: var(--bs-emphasis-color);
    background-color: var(--bs-tertiary-bg);
}
.table {
    --bs-table-bg: var(--bs-body-bg);
    --bs-table-color: var(--bs-body-color);
    --bs-table-border-color: var(--bs-border-color);
}
.form-control, .form-select, .input-group-text {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
    border-color: var(--bs-border-color);
}
.form-control::placeholder { color: var(--bs-secondary-color); }
.form-control:focus, .form-select:focus {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
}
.alert { border-color: var(--bs-border-color); }
.breadcrumb { --bs-breadcrumb-divider-color: var(--bs-secondary-color); }
.text-bg-light {
    color: var(--bs-body-color) !important;
    background-color: var(--bs-tertiary-bg) !important;
}
[data-bs-theme="dark"] .shadow-sm, [data-bs-theme="dark"] .shadow {
    box-shadow: 0 0 0 1px var(--bs-border-color), 0 .35rem 1rem rgba(0, 0, 0, .3) !important;
}

/* Keep Bootstrap components and generated module views aligned with the active theme. */
html { color-scheme: light; }
[data-bs-theme="dark"] { color-scheme: dark; }

.navbar {
    --bs-navbar-color: var(--bs-body-color);
    --bs-navbar-hover-color: var(--bs-emphasis-color);
    --bs-navbar-disabled-color: var(--bs-secondary-color);
    --bs-navbar-brand-color: var(--bs-emphasis-color);
    --bs-navbar-brand-hover-color: var(--bs-emphasis-color);
    background-color: var(--bs-body-bg) !important;
    border-bottom: var(--bs-border-width) solid var(--bs-border-color);
}
.navbar .navbar-toggler { border-color: var(--bs-border-color); }
[data-bs-theme="dark"] .navbar .navbar-toggler-icon { filter: invert(1) grayscale(1); }

.dropdown-menu, .card, .modal-content, .offcanvas, .popover, .list-group-item {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
    border-color: var(--bs-border-color);
}
.dropdown-item { color: var(--bs-body-color); }
.dropdown-item:hover, .dropdown-item:focus {
    color: var(--bs-emphasis-color);
    background-color: var(--bs-tertiary-bg);
}
.table {
    --bs-table-bg: var(--bs-body-bg);
    --bs-table-color: var(--bs-body-color);
    --bs-table-border-color: var(--bs-border-color);
}
.form-control, .form-select, .input-group-text {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
    border-color: var(--bs-border-color);
}
.form-control::placeholder { color: var(--bs-secondary-color); }
.form-control:focus, .form-select:focus {
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
}
.alert { border-color: var(--bs-border-color); }
.breadcrumb { --bs-breadcrumb-divider-color: var(--bs-secondary-color); }
.text-bg-light {
    color: var(--bs-body-color) !important;
    background-color: var(--bs-tertiary-bg) !important;
}
[data-bs-theme="dark"] .shadow-sm, [data-bs-theme="dark"] .shadow {
    box-shadow: 0 0 0 1px var(--bs-border-color), 0 .35rem 1rem rgba(0, 0, 0, .3) !important;
}

.login-brand-logo { max-width: 240px; width: 100%; height: auto; }

/* Shared application navigation */
.app-navbar {
    --bs-navbar-padding-y: .55rem;
    box-shadow: 0 .2rem 1rem rgba(30, 42, 56, .1);
    backdrop-filter: saturate(140%) blur(10px);
}

.app-navbar > .container {
    align-items: center;
    gap: .75rem;
}

.app-navbar .navbar-brand { flex-shrink: 0; padding: .2rem 0; }

.app-navbar .navbar-toggler {
    border: 1px solid var(--bs-border-color);
    border-radius: .65rem;
    padding: .45rem .65rem;
}

.app-navbar .navbar-toggler:focus,
.app-navbar .nav-link:focus-visible,
.app-navbar .form-select:focus-visible {
    outline: 3px solid rgba(var(--bs-primary-rgb), .3);
    outline-offset: 2px;
    box-shadow: none;
}

.app-nav {
    align-items: center;
    gap: .15rem;
}

.app-nav .nav-link,
.app-navbar-action {
    border-radius: .55rem;
    color: var(--bs-navbar-color);
    font-size: .91rem;
    font-weight: 500;
    padding: .52rem .68rem;
    transition: background-color .15s ease, color .15s ease;
}

.app-nav .nav-link:hover,
.app-nav .nav-link:focus,
.app-navbar-action:hover,
.app-navbar-action:focus {
    color: var(--bs-emphasis-color);
    background-color: var(--bs-tertiary-bg);
}

.app-nav .nav-link.active,
.app-nav .show > .nav-link {
    color: var(--bs-primary-text-emphasis);
    background-color: var(--bs-primary-bg-subtle);
    font-weight: 650;
}

.app-nav .dropdown-menu {
    min-width: 13rem;
    margin-top: .4rem;
    padding: .4rem;
    border-radius: .7rem;
    box-shadow: 0 .65rem 1.5rem rgba(30, 42, 56, .16);
}

.app-nav .dropdown-item {
    border-radius: .45rem;
    padding: .55rem .7rem;
}

.app-nav .dropdown-item:hover,
.app-nav .dropdown-item:focus,
.app-nav .dropdown-item.active {
    color: var(--bs-primary-text-emphasis);
    background-color: var(--bs-primary-bg-subtle);
}

.app-navbar-actions {
    display: flex;
    align-items: center;
    gap: .35rem;
    flex-shrink: 0;
}

.app-navbar-action {
    width: 2.5rem;
    height: 2.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.2rem;
}

.app-locale-form { margin: 0; }
.app-locale-select {
    min-width: 5.25rem;
    border-radius: .55rem;
    font-size: .84rem;
    font-weight: 600;
    cursor: pointer;
}

@media (max-width: 767.98px) {
    .app-navbar .navbar-collapse {
        max-height: calc(100vh - 4.5rem);
        overflow-y: auto;
        padding: .65rem 0 .35rem;
    }

    .app-nav {
        align-items: stretch;
        gap: .1rem;
    }

    .app-nav .nav-link { padding: .7rem .8rem; }

    .app-nav .dropdown-menu {
        margin: .15rem 0 .35rem;
        padding: .25rem .4rem;
        background-color: var(--bs-tertiary-bg);
        box-shadow: none;
    }

    .app-nav .dropdown-item { color: var(--bs-navbar-color); }
    .app-nav .dropdown-menu .dropdown-menu { margin-left: .75rem; }

    .app-navbar-actions {
        justify-content: space-between;
        margin-top: .5rem;
        padding-top: .65rem;
        border-top: 1px solid var(--bs-border-color);
    }
}