:root {
    --primary: #3E87FB;
    --black: #000000;
    --ink: #0A1224;
    --muted: #62708A;
    --light: #F5F8FF;
    --border: #E5EAF3;
    --white: #FFFFFF;
    --radius: 8px;
    --shadow: 0 18px 50px rgba(10, 18, 36, .10);
}

body.admin-body {
    background: var(--light);
    font-family: "Montserrat", Arial, sans-serif;
    color: var(--ink);
}

.admin-login {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem;
    background: linear-gradient(145deg, var(--black), #0A1224 55%, var(--primary));
}

.admin-login-card {
    width: min(460px, 100%);
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
}

.admin-login-card img {
    width: 230px;
    max-height: 86px;
    object-fit: contain;
    display: block;
    margin: 0 auto 1rem;
}

.admin-shell {
    display: grid;
    grid-template-columns: 282px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background: var(--black);
    color: var(--white);
    padding: 1rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: auto;
}

.admin-sidebar-logo {
    background: var(--white);
    border-radius: var(--radius);
    padding: .6rem;
    margin-bottom: 1rem;
}

.admin-sidebar-logo img {
    width: 100%;
    max-height: 76px;
    object-fit: contain;
}

.admin-nav {
    display: grid;
    gap: .25rem;
}

.admin-nav a {
    color: rgba(255, 255, 255, .82);
    text-decoration: none;
    padding: .68rem .75rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: .65rem;
    font-weight: 700;
    font-size: .92rem;
}

.admin-nav a:hover,
.admin-nav a.active {
    background: var(--primary);
    color: var(--white);
}

.admin-content {
    padding: 1.2rem;
}

.admin-topbar {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.2rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    box-shadow: 0 10px 30px rgba(10, 18, 36, .05);
}

.admin-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(10, 18, 36, .05);
    padding: 1.2rem;
}

.stat-card {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.stat-card i {
    width: 50px;
    height: 50px;
    display: grid;
    place-items: center;
    border-radius: var(--radius);
    background: rgba(62, 135, 251, .14);
    color: var(--primary);
    font-size: 1.4rem;
}

.stat-card strong {
    font-size: 1.7rem;
    display: block;
}

.table {
    vertical-align: middle;
}

.table img.thumb {
    width: 80px;
    height: 54px;
    object-fit: cover;
    border-radius: 6px;
}

.form-control,
.form-select {
    border-color: var(--border);
    border-radius: var(--radius);
}

.btn {
    border-radius: var(--radius);
    font-weight: 800;
}

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

.developer-credit {
    color: rgba(255, 255, 255, .72);
    font-size: .82rem;
    margin-top: 1rem;
}

.developer-credit a {
    color: rgba(255, 255, 255, .86);
    text-decoration: none;
}

.timeline {
    position: relative;
    padding-left: 1.4rem;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-bottom: 1rem;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -1.38rem;
    top: .35rem;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 2px var(--primary);
}

@media (max-width: 991px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }
    .admin-sidebar {
        position: static;
        height: auto;
    }
    .admin-nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 575px) {
    .admin-nav {
        grid-template-columns: 1fr;
    }
    .admin-topbar {
        align-items: flex-start;
        flex-direction: column;
    }
}