:root {
    --ink: #17120e;
    --paper: #fff7df;
    --oxide: #b35318;
    --muted: #6c6258;
    --line: rgba(23, 18, 14, 0.14);
}

body {
    min-height: 100vh;
    margin: 0;
    background: #f6edd8;
    color: var(--ink);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.login-screen {
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        linear-gradient(135deg, rgba(23, 18, 14, 0.94), rgba(179, 83, 24, 0.82)),
        url("../img/diplomatura.jpg") center / cover no-repeat;
}

.login-box {
    width: min(100%, 420px);
    background: #fff;
    border-radius: 8px;
    padding: 34px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.login-box h1,
.admin-head h1,
.admin-card h2 {
    margin: 0;
    font-weight: 900;
    letter-spacing: 0;
}

.login-box p {
    color: var(--muted);
}

.login-box a {
    display: inline-block;
    margin-top: 18px;
    color: var(--oxide);
    font-weight: 800;
}

.admin-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 270px;
    background: var(--ink);
    color: #fff;
    padding: 26px 20px;
    overflow-y: auto;
}

.admin-sidebar strong {
    display: block;
    margin-bottom: 24px;
    font-size: 1.2rem;
    text-transform: uppercase;
}

.admin-sidebar nav {
    display: grid;
    gap: 8px;
}

.admin-sidebar a {
    display: block;
    color: rgba(255, 255, 255, 0.74);
    text-decoration: none;
    font-weight: 800;
    border-radius: 6px;
    padding: 10px 12px;
}

.admin-sidebar a.active,
.admin-sidebar a:hover,
.admin-sidebar a:focus {
    background: var(--oxide);
    color: #fff;
}

.admin-sidebar .site-link {
    margin-top: 18px;
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.admin-main {
    margin-left: 270px;
    padding: 34px;
}

.admin-head {
    margin-bottom: 24px;
}

.admin-head span {
    display: block;
    color: var(--oxide);
    font-weight: 900;
    text-transform: uppercase;
}

.admin-head h1 {
    font-size: clamp(2rem, 4vw, 3.6rem);
}

.admin-card,
.stats-grid article {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 16px 42px rgba(23, 18, 14, 0.07);
}

.admin-card h2 {
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.admin-subcard {
    margin-top: 18px;
    padding: 18px;
    background: #fffaf0;
    border: 1px solid var(--line);
    border-left: 6px solid var(--oxide);
    border-radius: 8px;
}

.admin-subcard h3 {
    margin: 0 0 14px;
    color: var(--oxide);
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stats-grid strong {
    display: block;
    color: var(--oxide);
    font-size: 3rem;
    line-height: 1;
    font-weight: 900;
}

.stats-grid span {
    color: var(--muted);
    font-weight: 800;
}

.form-label {
    font-weight: 900;
}

.form-control {
    border-radius: 4px;
    border-color: var(--line);
}

small {
    display: block;
    color: var(--muted);
    word-break: break-word;
}

.admin-list {
    display: grid;
    gap: 12px;
}

.admin-list article {
    display: grid;
    grid-template-columns: 82px 1fr auto auto;
    gap: 12px;
    align-items: center;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.admin-list img {
    width: 82px;
    height: 58px;
    object-fit: cover;
    border-radius: 6px;
    background: var(--paper);
}

.admin-list strong {
    display: block;
    font-weight: 900;
}

.admin-list span {
    color: var(--muted);
}

table {
    min-width: 920px;
}

@media (max-width: 900px) {
    .admin-sidebar {
        position: static;
        width: auto;
    }

    .admin-main {
        margin-left: 0;
        padding: 22px;
    }

    .admin-list article {
        grid-template-columns: 72px 1fr;
    }

    .admin-list article a,
    .admin-list article form {
        grid-column: 2;
    }
}