/**
 * Login administrador — autocontenido (no requiere Bootstrap ni CDN).
 * Ruta: /css/admin-login.css
 */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body.admin-login-page {
    min-height: 100vh;
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    color: #212529;
    background: linear-gradient(165deg, #e9eef2 0%, #dce4ea 40%, #cfd8dc 100%);
    display: flex;
    flex-direction: column;
}

.admin-login-accent {
    height: 4px;
    flex-shrink: 0;
    background: linear-gradient(90deg, #1b4332 0%, #2d6a4f 50%, #40916c 100%);
}

.admin-login-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
}

.admin-login-card {
    width: 100%;
    max-width: 28rem;
    margin: 0 auto;
    background: #fff;
    border-radius: 1rem;
    padding: 2rem 1.75rem;
    box-shadow:
        0 1rem 2.5rem rgba(27, 67, 50, 0.12),
        0 0.25rem 0.75rem rgba(0, 0, 0, 0.06);
}

@media (min-width: 576px) {
    .admin-login-card {
        padding: 2.25rem 2.5rem;
    }
}

.admin-login-head {
    text-align: center;
    margin-bottom: 1.5rem;
}

.admin-login-title {
    margin: 0 0 0.35rem;
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: #1a1a1a;
}

.admin-login-sub {
    margin: 0;
    font-size: 0.875rem;
    color: #6c757d;
}

.admin-login-error {
    margin-bottom: 1rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: #842029;
    background: #f8d7da;
    border: 1px solid #f1aeb5;
    border-radius: 0.375rem;
}

.admin-login-field {
    margin-bottom: 1rem;
}

.admin-login-field label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #5c636a;
}

.admin-login-input {
    display: block;
    width: 100%;
    max-width: 100%;
    padding: 0.65rem 0.9rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #212529;
    background-color: #fff;
    border: 1px solid #ced4da;
    border-radius: 0.375rem;
    -webkit-appearance: none;
    appearance: none;
}

.admin-login-input:focus {
    outline: 0;
    border-color: #2d6a4f;
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.2);
}

.admin-login-field--spaced {
    margin-bottom: 1.25rem;
}

.admin-login-submit {
    display: block;
    width: 100%;
    max-width: 100%;
    margin-top: 0.25rem;
    padding: 0.75rem 1rem;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.5;
    color: #fff;
    text-align: center;
    cursor: pointer;
    background: #0d6efd;
    border: none;
    border-radius: 0.375rem;
}

.admin-login-submit:hover {
    background: #0b5ed7;
}

.admin-login-submit:focus {
    outline: 0;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.35);
}

.admin-login-footer {
    margin: 1.5rem 0 0;
    text-align: center;
    font-size: 0.875rem;
}

.admin-login-footer a {
    color: #495057;
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

.admin-login-footer a:hover {
    color: #1b4332;
    border-bottom-color: rgba(27, 67, 50, 0.35);
}