:root {
    --admin-bg: #f4f7fb;
    --admin-surface: #ffffff;
    --admin-surface-2: #f8fbff;
    --admin-border: #e5edf5;
    --admin-text: #10233e;
    --admin-muted: #6c7a91;
    --admin-primary: #1f5eff;
    --admin-primary-2: #1647c9;
    --admin-gold: #d4a63d;
    --admin-success: #18a874;
    --admin-danger: #dc3545;
    --admin-shadow: 0 18px 60px rgba(16, 35, 62, 0.08);
    --admin-radius-xl: 28px;
    --admin-radius-lg: 20px;
    --admin-radius-md: 16px;
    --sidebar-width: 320px;
}

html, body {
    font-family: "Tajawal", "Cairo", sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
}

.admin-body {
    min-height: 100vh;
    background: radial-gradient(circle at top right, rgba(31, 94, 255, 0.08), transparent 25%), radial-gradient(circle at bottom left, rgba(212, 166, 61, 0.08), transparent 22%), var(--admin-bg);
}

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

.admin-sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: linear-gradient(180deg, #0f223d 0%, #122b4d 55%, #16355f 100%);
    color: #fff;
    padding: 22px 16px;
    position: fixed;
    inset: 0 auto 0 0;
    right: 0;
    left: auto;
    z-index: 1040;
    overflow: hidden;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
}

.sidebar-top {
    margin-bottom: 18px;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 22px;
    background: rgba(255,255,255,.06);
    backdrop-filter: blur(10px);
}

.brand-logo {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--admin-gold), #f4d27a);
    color: #12233f;
    font-size: 1.6rem;
    box-shadow: 0 12px 30px rgba(212, 166, 61, 0.35);
    flex-shrink: 0;
}

.brand-title {
    font-family: "Cairo", sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}

.brand-subtitle {
    margin-top: 4px;
    font-size: .88rem;
    color: rgba(255,255,255,.72);
}

.sidebar-user-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    border-radius: 20px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
    margin-bottom: 18px;
}

.sidebar-user-avatar {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: rgba(255,255,255,.1);
    font-size: 1.4rem;
}

.sidebar-user-name {
    font-weight: 700;
    font-size: .98rem;
    color: #fff;
}

.sidebar-user-role {
    font-size: .82rem;
    color: rgba(255,255,255,.7);
    margin-top: 4px;
}

.side-nav {
    overflow-y: auto;
    padding-left: 4px;
    flex: 1;
}

.custom-scroll::-webkit-scrollbar {
    width: 8px;
}

.custom-scroll::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,.16);
    border-radius: 999px;
}

.nav-group {
    margin-bottom: 18px;
}

.nav-group-title {
    font-family: "Cairo", sans-serif;
    font-size: .82rem;
    font-weight: 800;
    color: rgba(255,255,255,.6);
    margin-bottom: 10px;
    padding: 0 10px;
}

.side-link {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,.85);
    text-decoration: none;
    padding: 13px 14px;
    margin-bottom: 6px;
    border-radius: 16px;
    transition: all .2s ease;
    border: 1px solid transparent;
    font-weight: 600;
}

    .side-link i {
        width: 20px;
        text-align: center;
        font-size: 1rem;
    }

    .side-link:hover {
        background: rgba(255,255,255,.08);
        color: #fff;
        border-color: rgba(255,255,255,.08);
        transform: translateX(-2px);
    }

    .side-link.active {
        background: linear-gradient(135deg, rgba(31, 94, 255, .95), rgba(22, 71, 201, .95));
        color: #fff;
        box-shadow: 0 14px 30px rgba(31, 94, 255, .25);
        border-color: rgba(255,255,255,.08);
    }

.admin-main {
    flex: 1;
    margin-right: var(--sidebar-width);
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(244, 247, 251, 0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(229, 237, 245, 0.95);
    padding: 18px 26px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
}

.topbar-right,
.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-heading h1 {
    margin: 0;
    font-family: "Cairo", sans-serif;
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--admin-text);
}

.page-heading p {
    margin: 4px 0 0;
    color: var(--admin-muted);
    font-size: .92rem;
}

.topbar-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    font-weight: 700;
    font-size: .9rem;
    border: 1px solid transparent;
    white-space: nowrap;
}

.chip-admin {
    background: rgba(31, 94, 255, .1);
    color: var(--admin-primary-2);
    border-color: rgba(31, 94, 255, .14);
}

.chip-secretary {
    background: rgba(212, 166, 61, .12);
    color: #9b6d08;
    border-color: rgba(212, 166, 61, .18);
}

.chip-teacher {
    background: rgba(24, 168, 116, .1);
    color: #137b56;
    border-color: rgba(24, 168, 116, .16);
}

.btn-logout {
    border: 0;
    background: #132743;
    color: #fff;
    border-radius: 14px;
    padding: 10px 16px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: .2s ease;
}

    .btn-logout:hover {
        background: #0f1f35;
        color: #fff;
        transform: translateY(-1px);
    }

.admin-content-wrap {
    padding: 24px;
}

.admin-content-card {
    background: rgba(255,255,255,.82);
    border: 1px solid rgba(229, 237, 245, .9);
    box-shadow: var(--admin-shadow);
    border-radius: var(--admin-radius-xl);
    padding: 24px;
    min-height: calc(100vh - 140px);
}

.admin-alert {
    border: 0;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0,0,0,.05);
    margin-bottom: 18px;
    padding: 14px 18px;
    font-weight: 600;
}

.sidebar-toggle {
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 10px 24px rgba(16, 35, 62, 0.08);
    color: var(--admin-text);
    font-size: 1.25rem;
}

.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.35);
    opacity: 0;
    visibility: hidden;
    transition: .2s ease;
    z-index: 1035;
}

    .sidebar-backdrop.show {
        opacity: 1;
        visibility: visible;
    }

@media (max-width: 991.98px) {
    .admin-sidebar {
        transform: translateX(100%);
        transition: transform .25s ease;
    }

        .admin-sidebar.show {
            transform: translateX(0);
        }

    .admin-main {
        margin-right: 0;
    }

    .admin-topbar {
        padding: 16px;
    }

    .admin-content-wrap {
        padding: 16px;
    }

    .admin-content-card {
        padding: 16px;
        border-radius: 22px;
        min-height: auto;
    }

    .page-heading p {
        display: none;
    }

    .topbar-left {
        gap: 8px;
        flex-wrap: wrap;
        justify-content: flex-end;
    }
}

@media (max-width: 575.98px) {
    .topbar-chip {
        display: none;
    }

    .btn-logout span {
        display: none;
    }

    .admin-sidebar {
        width: 88%;
        min-width: 88%;
    }
}