* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* CONTENEDOR */
.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

/* TARJETA */
.login-card {
    background: #ffffff;
    padding: 40px;
    border-radius: 14px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.08);
    text-align: center;
}

/* HEADER */
.login-header {
    margin-bottom: 30px;
}
.logoInstitucion > img{
    width: 60px;
    height: 60px;
}

.logo-circle {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    margin: 0 auto 15px;
    color: white;
}

.login-header h1 {
    font-size: 20px;
    color: #1e3a8a;
    margin-bottom: 5px;
}

.login-header p {
    font-size: 14px;
    color: #6b7280;
}

/* FORM */
.form-group {
    margin-bottom: 10px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 13px;
    margin-bottom: 6px;
    color: #374151;
}

.form-group input {
    width: 100%;
    padding: 11px;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    font-size: 14px;
    transition: all 0.3s;
}

.form-group input:focus {
    border-color: #1e3a8a;
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.1);
    outline: none;
}

/* BOTÓN */
.btn-login {
    width: 100%;
    padding: 12px;
    background: #1e3a8a;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.btn-login:hover {
    background: #1d4ed8;
}

/* ERROR */
.alert-error {
    background: #fee2e2;
    color: #b91c1c;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 13px;
    transition: all 0.4s ease;
}

/* FOOTER */
.login-footer {
    margin-top: 25px;
    font-size: 12px;
    color: #9ca3af;
}