:root {
    --azul: #001A66;
    --verde: #00953B;
    --negro: #0A0A0A;
    --gris-fondo: #F4F6F8;
    --blanco: #FFFFFF;
    --texto: #1F2937;
    --borde: #D9E1E7;
    --danger: #C62828;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, var(--gris-fondo), #EAF3EE);
    color: var(--texto);
}

header {
    background: linear-gradient(90deg, var(--azul), var(--verde));
    color: var(--blanco);
    padding: 16px 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.header-wrap {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand img {
    height: 48px;
    width: auto;
    display: block;
}

.brand h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
}

nav a {
    color: var(--blanco);
    text-decoration: none;
    margin-left: 18px;
    font-weight: 600;
}

nav a:hover {
    text-decoration: underline;
}

.container {
    width: 92%;
    max-width: 1100px;
    margin: 30px auto;
}

.card {
    background: var(--blanco);
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    padding: 24px;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.login-box {
    width: 100%;
    max-width: 430px;
    background: var(--blanco);
    border-radius: 18px;
    box-shadow: 0 14px 35px rgba(0,0,0,0.18);
    overflow: hidden;
}

.login-top {
    background: linear-gradient(135deg, var(--azul), var(--verde));
    text-align: center;
    padding: 30px 20px 20px;
}

.login-top img {
    max-width: 180px;
    width: 100%;
    height: auto;
    margin-bottom: 10px;
}

.login-top h1 {
    color: var(--blanco);
    font-size: 28px;
    margin: 10px 0 0;
}

.login-body {
    padding: 28px;
}

.login-body h3 {
    margin-top: 0;
    color: var(--azul);
    text-align: center;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
    color: var(--azul);
}

input,
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--borde);
    border-radius: 10px;
    margin-bottom: 16px;
    font-size: 15px;
    outline: none;
    transition: 0.2s ease;
}

input:focus,
select:focus {
    border-color: var(--verde);
    box-shadow: 0 0 0 3px rgba(0,149,59,0.15);
}

button,
.btn {
    display: inline-block;
    border: none;
    border-radius: 10px;
    padding: 11px 18px;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: 0.2s ease;
}

.btn-primary {
    background: var(--azul);
    color: var(--blanco);
}

.btn-primary:hover {
    background: #00124a;
}

.btn-success {
    background: var(--verde);
    color: var(--blanco);
}

.btn-success:hover {
    background: #007d32;
}

.btn-danger {
    background: var(--danger);
    color: var(--blanco);
}

.btn-danger:hover {
    background: #a61f1f;
}

.alert-error {
    background: #FDECEC;
    color: var(--danger);
    border: 1px solid #F5C2C2;
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 18px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.info-box {
    background: linear-gradient(180deg, #FFFFFF, #F8FBFD);
    border-left: 6px solid var(--verde);
    border-radius: 14px;
    padding: 18px;
    box-shadow: 0 5px 16px rgba(0,0,0,0.06);
}

.info-box h4 {
    margin-top: 0;
    color: var(--azul);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--blanco);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0,0,0,0.06);
}

table th {
    background: var(--azul);
    color: var(--blanco);
    padding: 12px;
    text-align: left;
}

table td {
    border-bottom: 1px solid #EAECEF;
    padding: 12px;
}

table tr:hover td {
    background: #F8FBFF;
}

footer {
    margin-top: 30px;
    background: var(--negro);
    color: var(--blanco);
    text-align: center;
    padding: 16px;
}

.page-title {
    color: var(--azul);
    margin-top: 0;
}

.form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.kpi-card {
    background: #ffffff;
    border-radius: 14px;
    padding: 22px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    border-top: 5px solid var(--azul);
}

.kpi-label {
    display: block;
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 10px;
    font-weight: 700;
}

.kpi-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--azul);
}

.kpi-ok {
    color: var(--verde);
}

.kpi-warn {
    color: #d97706;
}

.kpi-danger {
    color: #c62828;
}

.kpi-neutral {
    color: #6b7280;
}