:root {
    /* Nueva paleta de colores: Verdes y Esmeraldas */
    --bg-gradient: linear-gradient(135deg, #064e3b 0%, #065f46 50%, #10b981 100%);
    --accent-color: #34d399; /* Verde esmeralda claro para detalles */
    --btn-gradient: linear-gradient(90deg, #10b981 0%, #059669 100%);
    --glass-bg: rgba(255, 255, 255, 0.12);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-gradient);
    background-attachment: fixed;
    overflow: hidden;
}

/* Elementos decorativos animados */
.decor {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    z-index: -1;
    filter: blur(40px);
}

.decor-1 {
    width: 400px;
    height: 400px;
    top: -150px;
    left: -100px;
}

.decor-2 {
    width: 300px;
    height: 300px;
    bottom: -100px;
    right: -50px;
}


.login-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%); /* Este es el truco mágico */
    /* ... el resto de tu estilo glassmorphism ... */

    border: 1px solid rgba(255, 255, 255, 0.2);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 50px 35px;


}
    /* --- TARJETA PRINCIPAL --- */
    /*.login-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    padding: 50px 35px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    color: white;*/
    /* Animación corregida */
    /*animation: slideUp 0.6s ease-out;
}*/

    @keyframes slideUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }

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

    .login-card h2 {
    font-size: 28px;
    margin-bottom: 8px;
    font-weight: 700;
    color: #ecfdf5;
}

.login-card p {
    font-size: 15px;
    margin-bottom: 35px;
    color: #a7f3d0;
    opacity: 0.9;
}

/* --- CAMPOS DE ENTRADA --- */
.input-group {
    position: relative;
    margin-bottom: 22px;
}

    .input-group i {
        position: absolute;
        left: 18px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--accent-color);
        font-size: 18px;
    }

    .input-group input {
        width: 100%;
        padding: 14px 15px 14px 50px;
        background: rgba(0, 0, 0, 0.2);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 14px;
        color: white;
        outline: none;
        transition: all 0.3s ease;
        font-size: 16px;
    }

        .input-group input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .input-group input:focus {
            border-color: var(--accent-color);
            background: rgba(0, 0, 0, 0.3);
            box-shadow: 0 0 10px rgba(52, 211, 153, 0.2);
        }

/* --- BOTÓN --- */
.btn-submit {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 14px;
    background: var(--btn-gradient);
    color: white;
    font-weight: bold;
    font-size: 17px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

    .btn-submit:hover {
        transform: translateY(-3px);
        filter: brightness(1.1);
        box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
    }

.error-msg {
    color: #fecaca;
    font-size: 14px;
    margin-top: 20px;
    display: none;
    background: rgba(220, 38, 38, 0.2);
    padding: 8px;
    border-radius: 8px;
}

/* Responsive */
@media (max-width: 400px) {
    .login-card {
        padding: 40px 20px;
    }

        .login-card h2 {
            font-size: 24px;
        }
}