:root {
    --color-ink: #000217;
    --color-navy: #00324f;
    --color-blue: #006594;
    --color-sky: #00a3e3;
    --color-cyan: #00ecff;
    --app-bg: #eef8fc;
    --app-surface: #ffffff;
    --app-border: #b7d9e8;
    --app-text: #000217;
    --app-muted: #5b7483;
    --bs-primary: #006594;
    --bs-primary-rgb: 0, 101, 148;
    --bs-link-color: #006594;
    --bs-link-hover-color: #00324f;
}

body {
    background: var(--app-bg);
    color: var(--app-text);
}

.auth-screen {
    min-height: 100vh;
}

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

.app-sidebar {
    background: linear-gradient(180deg, var(--color-ink), var(--color-navy) 58%, var(--color-blue));
    bottom: 0;
    box-shadow: .4rem 0 1.4rem rgba(0, 2, 23, .18);
    color: #fff;
    display: flex;
    flex-direction: column;
    left: 0;
    padding: 1rem;
    position: fixed;
    top: 0;
    width: 280px;
    z-index: 1040;
}

.sidebar-brand {
    border-bottom: 1px solid rgba(255, 255, 255, .14);
    margin-bottom: 1rem;
    padding-bottom: 1rem;
}

.sidebar-brand a {
    align-items: center;
    color: #fff;
    display: flex;
    gap: .8rem;
    text-decoration: none;
}

.brand-mark {
    align-items: center;
    background: var(--color-cyan);
    border-radius: .65rem;
    color: var(--color-ink);
    display: inline-flex;
    flex: 0 0 44px;
    font-weight: 800;
    height: 44px;
    justify-content: center;
    width: 44px;
}

.sidebar-brand strong,
.user-chip strong {
    display: block;
    line-height: 1.15;
}

.sidebar-brand small,
.user-chip small {
    color: rgba(255, 255, 255, .68);
    display: block;
    font-size: .78rem;
}

.sidebar-nav {
    display: grid;
    gap: .35rem;
}

.sidebar-link {
    align-items: center;
    border-radius: .55rem;
    color: rgba(255, 255, 255, .78);
    display: flex;
    gap: .75rem;
    padding: .72rem .8rem;
    text-decoration: none;
    transition: background-color .16s ease, color .16s ease, transform .16s ease;
}

.sidebar-link i {
    color: var(--color-sky);
    font-size: 1.08rem;
    width: 1.25rem;
}

.sidebar-link:hover,
.sidebar-link:focus {
    background: rgba(255, 255, 255, .1);
    color: #fff;
    transform: translateX(2px);
}

.sidebar-link.active {
    background: var(--color-cyan);
    color: var(--color-ink);
    font-weight: 700;
}

.sidebar-link.active i {
    color: var(--color-ink);
}

.sidebar-footer {
    border-top: 1px solid rgba(255, 255, 255, .14);
    margin-top: auto;
    padding-top: 1rem;
}

.user-chip {
    align-items: center;
    display: flex;
    gap: .7rem;
    min-width: 0;
}

.user-avatar {
    align-items: center;
    background: rgba(0, 236, 255, .18);
    border: 1px solid rgba(0, 236, 255, .5);
    border-radius: 50%;
    display: inline-flex;
    flex: 0 0 38px;
    font-weight: 700;
    height: 38px;
    justify-content: center;
    width: 38px;
}

.app-content {
    margin-left: 280px;
    min-height: 100vh;
}

.app-topbar {
    align-items: center;
    background: rgba(255, 255, 255, .9);
    border-bottom: 1px solid var(--app-border);
    display: flex;
    gap: 1rem;
    min-height: 68px;
    padding: .85rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.topbar-title {
    color: var(--color-ink);
    font-size: 1rem;
    font-weight: 700;
}

.topbar-subtitle {
    color: var(--app-muted);
    font-size: .82rem;
}

.sidebar-toggle {
    display: none;
    min-height: 40px;
    min-width: 44px;
}

.sidebar-backdrop {
    background: rgba(0, 2, 23, .48);
    bottom: 0;
    display: none;
    left: 0;
    position: fixed;
    right: 0;
    top: 0;
    z-index: 1030;
}

.app-main {
    padding: 1.5rem;
}

a {
    color: var(--color-blue);
}

a:hover {
    color: var(--color-navy);
}

.text-muted {
    color: var(--app-muted) !important;
}

.bg-primary {
    background: linear-gradient(90deg, var(--color-ink), var(--color-navy) 52%, var(--color-blue)) !important;
}

.navbar {
    border-bottom: 3px solid var(--color-sky);
}

.navbar-brand {
    color: #fff !important;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, .78);
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link:focus {
    color: var(--color-cyan);
}

.btn-primary {
    --bs-btn-bg: var(--color-blue);
    --bs-btn-border-color: var(--color-blue);
    --bs-btn-hover-bg: var(--color-navy);
    --bs-btn-hover-border-color: var(--color-navy);
    --bs-btn-active-bg: var(--color-ink);
    --bs-btn-active-border-color: var(--color-ink);
    --bs-btn-disabled-bg: var(--color-blue);
    --bs-btn-disabled-border-color: var(--color-blue);
}

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

.btn-outline-secondary {
    --bs-btn-color: var(--color-navy);
    --bs-btn-border-color: #7dbbd2;
    --bs-btn-hover-bg: var(--color-navy);
    --bs-btn-hover-border-color: var(--color-navy);
}

.form-control:focus,
.form-select:focus,
.form-check-input:focus {
    border-color: var(--color-sky);
    box-shadow: 0 0 0 .2rem rgba(0, 236, 255, .22);
}

.form-check-input:checked {
    background-color: var(--color-blue);
    border-color: var(--color-blue);
}

.page-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.panel {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: .5rem;
    box-shadow: 0 .35rem 1rem rgba(0, 50, 79, .08);
}

.panel-header {
    background: linear-gradient(180deg, rgba(0, 163, 227, .08), rgba(255, 255, 255, 0));
    border-bottom: 1px solid var(--app-border);
    padding: 1rem 1.25rem;
}

.panel-body {
    padding: 1.25rem;
}

.table thead th {
    background: #e5f6fb;
    color: var(--color-navy);
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: 0;
}

.table-hover tbody tr:hover {
    --bs-table-hover-bg: rgba(0, 163, 227, .08);
}

.stat {
    border-left: .25rem solid var(--color-sky);
}

.form-check-input {
    cursor: pointer;
}

.time-block-group {
    display: grid;
    gap: .55rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.time-block-option {
    align-items: center;
    background: #f4fbfe;
    border: 1px solid var(--app-border);
    border-radius: .5rem;
    cursor: pointer;
    display: flex;
    gap: .55rem;
    min-height: 38px;
    padding: .45rem .65rem;
}

.time-block-option:hover {
    border-color: var(--color-sky);
}

.time-block-option span {
    color: var(--color-navy);
    font-weight: 600;
}

.modal {
    --bs-modal-bg: #ffffff;
    --bs-modal-border-color: var(--app-border);
    --bs-modal-header-border-color: var(--app-border);
    --bs-modal-footer-border-color: var(--app-border);
    z-index: 1080;
}

.modal-backdrop {
    z-index: 1070;
}

.modal-content {
    background: #ffffff;
    border: 1px solid var(--app-border);
    border-radius: .65rem;
    box-shadow: 0 1.2rem 3rem rgba(0, 2, 23, .28);
    overflow: visible;
}

.modal-header,
.modal-body,
.modal-footer {
    background: #ffffff;
}

.modal-header {
    border-top-left-radius: .65rem;
    border-top-right-radius: .65rem;
}

.modal-footer {
    border-bottom-left-radius: .65rem;
    border-bottom-right-radius: .65rem;
}

.modal .form-control,
.modal .form-select,
.modal .time-block-option {
    background-color: #ffffff;
}

.modal .time-block-group {
    grid-template-columns: 1fr;
}

.modal-subtitle {
    color: var(--app-muted);
    font-size: .86rem;
    margin-top: .15rem;
}

.reprogram-modal {
    max-width: 520px;
}

.reprogram-modal .modal-footer {
    justify-content: space-between;
}

.badge.text-bg-secondary {
    background-color: var(--color-navy) !important;
}

.badge.text-bg-success {
    background-color: #007f74 !important;
}

.badge.text-bg-warning {
    background-color: var(--color-cyan) !important;
    color: var(--color-ink) !important;
}

.alert-success {
    background-color: #d9fbff;
    border-color: var(--color-sky);
    color: var(--color-navy);
}

.alert-danger {
    background-color: #ffe8ef;
    border-color: #ff9bb7;
    color: #65001f;
}

@media (max-width: 991.98px) {
    .app-sidebar {
        transform: translateX(-100%);
        transition: transform .2s ease;
    }

    .sidebar-open .app-sidebar {
        transform: translateX(0);
    }

    .sidebar-open .sidebar-backdrop {
        display: block;
    }

    .app-content {
        margin-left: 0;
    }

    .app-topbar {
        padding-inline: 1rem;
    }

    .sidebar-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .app-main {
        padding: 1rem;
    }

    .page-title {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 575.98px) {
    .app-sidebar {
        width: min(86vw, 300px);
    }

    .time-block-group {
        grid-template-columns: 1fr;
    }
}