:root {
    --olistar-crimson: #900C3F;
    --olistar-crimson-dark: #6b092f;
    --olistar-gold: #ffc107;
    --olistar-dark: #1e1e1e;
    --olistar-sidebar: #1a1216;
    --olistar-light: #f7f4f5;
    --font-serif: Georgia, "Times New Roman", serif;
    --font-sans: "Segoe UI", system-ui, sans-serif;
}

html, body { height: 100%; }
body:has(#sms-shell) #sms-shell { visibility: hidden; }
html.sms-ready body:has(#sms-shell) #sms-shell { visibility: visible; }
html.sms-loading #sms-shell { visibility: hidden; }
html.sms-loading::before {
    content: "Loading School Portal...";
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: grid;
    place-items: center;
    background: var(--olistar-light);
    color: var(--olistar-crimson);
    font-family: var(--font-serif);
    font-size: 1.2rem;
}
body {
    font-family: var(--font-sans);
    color: var(--olistar-dark);
    background: var(--olistar-light);
}

h1, h2, h3, h4, .font-serif { font-family: var(--font-serif); }

.sms-login-body {
    min-height: 100vh;
    background: linear-gradient(160deg, #1a1216 0%, #900C3F 55%, #1e1e1e 100%);
}

.sms-login-card {
    max-width: 460px;
    border: 2px solid var(--olistar-gold);
}

.sms-brand { color: var(--olistar-crimson); }

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

.sms-sidebar {
    width: 260px;
    background: var(--olistar-sidebar);
    min-height: 100vh;
}

.sms-sidebar a {
    color: rgba(255,255,255,.78);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .65rem 1rem;
    border-left: 3px solid transparent;
    font-size: .9rem;
}

.sms-sidebar a:hover,
.sms-sidebar a.active {
    color: var(--olistar-gold);
    background: rgba(255,255,255,.06);
    border-left-color: var(--olistar-gold);
}

.sms-mobile-nav { display: none; }
.sms-mobile-nav summary { display: none; }

.sms-topbar {
    background: #fff;
    border-bottom: 2px solid var(--olistar-dark);
}

.stat-card {
    border: 0;
    border-radius: 0;
    border-bottom: 3px solid var(--olistar-crimson);
}

.badge-boarding { background: var(--olistar-crimson); }
.badge-day { background: #1e1e1e; }

.btn-crimson {
    background: var(--olistar-crimson);
    color: #fff;
    border: 0;
    border-radius: 0;
}
.btn-crimson:hover { background: var(--olistar-crimson-dark); color: #fff; }

.table thead th {
    background: #212529;
    color: #f8f9fa;
    font-size: .75rem;
    letter-spacing: .5px;
    text-transform: uppercase;
}

.nav-pills .nav-link.active {
    background: var(--olistar-crimson);
}

@media (max-width: 991.98px) {
    .sms-sidebar {
        width: 100%;
        min-height: auto;
        padding: .75rem !important;
        display: grid;
        grid-template-columns: auto 1fr;
        gap: .5rem .75rem;
        align-items: center;
    }

    .sms-sidebar > div:first-child {
        margin-bottom: 0 !important;
        min-width: max-content;
    }

    .sms-sidebar nav {
        min-width: 0;
        display: flex !important;
        flex-direction: row !important;
        gap: .25rem;
        overflow-x: auto;
        scrollbar-width: thin;
        padding-bottom: .2rem;
    }

    .sms-sidebar nav a {
        flex: 0 0 auto;
        white-space: nowrap;
        padding: .55rem .7rem;
        border-left: 0;
        border-bottom: 3px solid transparent;
    }

    .sms-sidebar nav a:hover,
    .sms-sidebar nav a.active {
        border-left-color: transparent;
        border-bottom-color: var(--olistar-gold);
    }

    .sms-mobile-nav { display: block; min-width: 0; }
    .sms-mobile-nav summary {
        display: block;
        list-style: none;
        cursor: pointer;
        color: #fff;
        border: 1px solid rgba(255,255,255,.35);
        padding: .55rem .75rem;
        white-space: nowrap;
    }
    .sms-mobile-nav summary::-webkit-details-marker { display: none; }
    .sms-mobile-nav summary::after {
        content: "";
    }
    .sms-mobile-nav[open] summary { color: var(--olistar-gold); }
    .sms-mobile-nav[open] nav {
        position: absolute;
        z-index: 20;
        top: 100%;
        left: 0;
        right: 0;
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: .25rem;
        padding: .5rem;
        background: var(--olistar-sidebar);
        border-top: 1px solid rgba(255,255,255,.2);
        box-shadow: 0 .5rem 1rem rgba(0,0,0,.25);
    }
    .sms-mobile-nav[open] nav a {
        border: 0;
        padding: .65rem .7rem;
    }

    .sms-desktop-nav { display: none !important; }

    .sms-sidebar > div:last-child {
        grid-column: 1 / -1;
        margin-top: 0 !important;
        padding-top: .5rem !important;
    }

    .sms-topbar {
        padding: .85rem 1rem !important;
    }

    .sms-topbar > div:last-child {
        width: 100%;
        justify-content: space-between;
    }

    main.p-4 {
        padding: 1rem !important;
    }

    .table-responsive {
        -webkit-overflow-scrolling: touch;
    }

    .table-responsive > .table {
        min-width: 720px;
    }

    .modal-dialog {
        margin: .5rem;
    }
}

@media (max-width: 575.98px) {
    .sms-sidebar {
        grid-template-columns: 1fr;
        position: relative;
    }

    .sms-sidebar > div:first-child,
    .sms-sidebar nav,
    .sms-sidebar > div:last-child {
        grid-column: 1;
    }

    .sms-sidebar nav { margin: 0; padding-inline: 0; }

    .sms-topbar h1 {
        font-size: 1.35rem;
    }

    .sms-topbar > div:last-child {
        gap: .5rem !important;
    }

    .sms-topbar > div:last-child span {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .row > [class*="col-"] {
        width: 100%;
    }

    .btn {
        min-height: 38px;
    }
}