:root {
    --color-medico: #11a6eb;
    --color-paciente: #054ec2;

    --color-blanco: #ffffff;
    --color-gris-claro: #f4f6f9;
    --color-gris-texto: #555555;
    --color-negro: #333333;
    --color-error: #ff4d4d;

    --fuente-principal: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    --borde-radius: 8px;
    --sombra-suave: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: var(--fuente-principal);
    background-color: var(--color-gris-claro);
    color: var(--color-negro);
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.login-nav {
    background: white;
    padding: 10px 20px;
    border-radius: 50px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    font-size: 0.9rem;
    color: var(--color-gris-texto);
}

.login-nav span {
    font-weight: bold;
}

.login-nav a {
    padding: 5px 10px;
    border-radius: 15px;
    color: var(--color-gris-texto);
}

.login-nav a:hover {
    background-color: #eee;
}

.login-nav a.active {
    background-color: var(--color-negro);
    color: var(--color-blanco);
    font-weight: bold;
}

hr {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0));
    width: 80%;
    margin: 20px 0;
}

.login-container {
    color: var(--color-blanco);
    border-radius: var(--borde-radius) !important;
    box-shadow: var(--sombra-suave);
    border: none !important;
    width: 100%;
    animation: fadeIn 0.5s ease-in-out;
}

.login-container h2 {
    margin-bottom: 20px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 1.5rem;
}

.login-container h2 i {
    font-size: 2.5rem;
    margin-bottom: 10px;
    display: inline-block;
}

.login-form {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.input-group {
    width: 100%;
    text-align: left;
}

.input-group label {
    font-size: 0.9rem;
    margin-bottom: 5px;
    display: inline-block;
    font-weight: 500;
    opacity: 0.9;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--color-negro);
    outline: none;
    transition: background 0.3s;
}

.input-group input:focus {
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

button[name="btn_entrar"] {
    background-color: var(--color-blanco);
    color: var(--color-paciente);
    font-weight: bold;
    border: none;
    border-radius: 5px;
    padding: 12px 30px !important;
    font-size: 1rem;
    margin-top: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
    width: 100%;
}

.login-container[style*="#11a6eb"] button {
    color: var(--color-medico);
}

button[name="btn_entrar"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

button[name="btn_entrar"]:active {
    transform: translateY(0);
}

.alert-error {
    background-color: rgba(255, 255, 255, 0.9) !important;
    color: var(--color-error) !important;
    border-radius: 5px;
    font-weight: bold;
    font-size: 0.9rem;
    border: 1px solid var(--color-error);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .login-container {
        margin: 20px;
        width: auto;
    }
}